Energy - Renewable Energy - Clean Energy - Alternative Energy
Energy
is any source of
usable power or
force that produces a
change in a
physical quantity or physical system to do
work. Energy is a
transformation, a qualitative change of
matter. Around 1.3 billion
humans lack regular access to
electricity in 2020.
Physics
describes energy as the
rate of doing work. A
thermodynamic quantity equivalent to
the capacity of a physical system to do work,
measured in
Watts
= joules / second.
The units of
energy are
Joules or
Erg. Erg is CGS unit of work or energy; the
work
done by a
force of one dyne acting over a distance of one centimeter. CGS
is a system of measurement based on centimeters and grams and seconds.
Dyne is a unit of force equal to the force that imparts an
acceleration of
1 cm/sec/sec to a mass of 1 gram. Erg is a unit of
work equal to 10−7power
joules. Joules is a unit of electrical energy equal to the work done
when a current of one ampere passes through a resistance of one ohm for
one second. Joules is defined "
mechanically", being the energy transferred to
an object by the mechanical work of moving it a distance of 1 metre
against a force of 1 newton. Newton is a unit of force equal to the force
that imparts an acceleration of 1 m/sec/sec to a mass of 1 kilogram; equal
to 100,000 dynes.
Energy Harvesting.
Specific Energy is energy per unit mass, like stored heat and other
thermodynamic properties of substances such as specific internal
energy, specific enthalpy, specific Gibbs free energy, and specific
Helmholtz Free Energy. It may also be
used for the kinetic energy or
potential energy
of a body. Specific energy is an intensive property, whereas energy and
mass are extensive properties. The SI unit for specific energy is the
joule per kilogram (J/kg). Other units still in use in some contexts are
the kilocalorie per gram (Cal/g or kcal/g), mostly in food-related topics,
watt hours per kilogram in the field of
batteries, and the Imperial
unit BTU per pound (BTU/lb), in some engineering and applied technical
fields. The gray and sievert are specialized measures for specific energy
absorbed by body tissues in the form of
radiation. The concept of specific energy is related to but distinct
from the chemical notion of molar energy, that is energy per mole of a
substance, which uses units of energy per mole, such as J/mol, kJ/mol, or
the older (but still widely used) kcal/mol.
Power in physics is the rate of doing work or transferring
heat, the
amount of energy transferred or converted per unit time. Having no
direction, it is a scalar quantity. In the International System of Units,
the unit of power is the joule per second (J/s), known as the watt in honour
of James Watt, the eighteenth-century developer of the steam engine
condenser. Another common and traditional measure is horsepower (comparing
to the power of a horse). Being the rate of work, the equation for power
can be written, power equals work over time, or power is energy over time.
Energy Level. A
quantum mechanical system or particle
that is bound—that is, confined spatially—can only take on certain
discrete values of energy. This contrasts with classical particles, which
can have any energy. These discrete values are called energy levels. The
term is commonly used for the energy levels of
electrons in atoms, ions, or
molecules, which are bound by the electric field of the nucleus, but can
also refer to energy levels of nuclei or vibrational or rotational energy
levels in molecules. The energy spectrum of a system with such discrete
energy levels is said to be quantized.
Activation
Energy describes the minimum energy which must be
available to a
chemical system with potential reactants to result in a
chemical reaction.
Conservation of Energy -
Fusion -
Monitoring Energy
-
Heat
Energy Transformation is the
process of changing energy from one of
its forms into another. In physics, energy is a quantity that provides the
capacity to perform many
actions—some as simple as lifting or warming an
object. In addition to being convertible,
energy is transferable to a
different location or object, but it
cannot be created
or destroyed. Energy in many of its forms may be used in natural
processes, or to provide some service to society such as heating,
refrigeration, lighting, or performing mechanical work to operate
machines. For example, in order to
heat your home, your furnace can burn
fuel, whose chemical
potential energy is thus converted into
thermal energy, which is then transferred to
your home's air in order to raise its temperature. In another example, an
internal
combustion engine burns gasoline to cause pressure that pushes
the pistons, thus performing work in order to accelerate your vehicle,
ultimately converting the fuel's
chemical energy to
your vehicle's additional
kinetic energy
corresponding to its increase in speed.
Cells (Signal
transduction).
Transformers -
Transducer -
Transform -
Power Supply (test
equipment)
Transduction in
biophysics is the conveyance of energy from one
electron (a donor) to another (a
receptor), at the same time that the class of energy changes.
Photonic energy, the
kinetic energy of a photon, may follow the following paths: Be
released again as a photon of less energy; Be transferred to a recipient
with no change in class; Be dissipated as
heat; or Be
transduced.
Outline of
Energy in
physics, this is an indirectly
observed quantity often understood as the ability of a physical system to
do work on other physical systems. Since work is defined as a force acting
through a distance (a length of space), energy is always equivalent to the
ability to exert force (a pull or a push) against an object that is moving
along a definite path of certain length.
Energy Types
Solar Energy
-
Solar Heat -
Portable -
Light Tubes
Wind Energy
-
Renewable -
Batteries -
Fuel Cells
Grids
-
Smart Grids (power lines) -
Wireless Electricity
Energy from Waste -
Bio-Gas -
Steam Power
Thermal Electric Energy -
Geo-Thermal-EnergyHydro-Power
-
Dams -
Ocean Wave Energy
Nuclear Power (Thorium)
-
Radiation
Electric Cars -
Electric Motors -
Generators -
Regenerative BrakingEngines
-
Fuel Systems -
Bio-Fuels -
Bio-Plastics
(composites)
Perpetual -
Zero-Point Energy
-
Gravity -
Elastic
Lasers (plasma) -
LED
-
Efficient Lighting -
SoundHydrogen
-
Fusion -
Fission -
Electrolysis -
Physics -
Chemistry
Kinetic Energy (piezo electricity from pressure or movement )
Human Energy -
Food Energy -
Natural
Gas -
Forms of Energy (wiki)
Mechanical
Energy is the sum of
potential energy and
kinetic energy. It is the
energy associated with the
motion and position of an object. The principle
of conservation of mechanical energy states that in an isolated system
that is only subject to conservative forces, the mechanical energy is
constant. If an object moves in the opposite direction of a conservative
net force, the
potential energy will increase; and if the speed (not the
velocity) of the object changes, the
kinetic energy of the object also
changes. In all real systems, however, nonconservative forces, such as
frictional forces, will be present, but if they are of negligible
magnitude, the mechanical energy changes little and its conservation is a
useful approximation. In elastic collisions, the mechanical energy is
conserved, but in inelastic collisions some mechanical energy is converted
into thermal energy.
Thermodynamic Free Energy is a concept useful in the
thermodynamics of chemical or thermal
processes in engineering and science. The change in the free energy is the
maximum amount of work that a thermodynamic system can perform in a
process at constant temperature, and its sign indicates whether a process
is thermodynamically favorable or forbidden. Since free energy usually
contains potential energy, it is not absolute but depends on the choice of
a zero point. Therefore, only relative free energy values, or changes in
free energy, are physically meaningful. The free energy is a thermodynamic
state function, like the internal energy, enthalpy, and
entropy.
Internal Energy of a thermodynamic system is the energy contained
within it. It is the energy necessary to create or prepare the system in
any given internal state. It does not include the
kinetic energy of
motion
of the system as a whole, nor the
potential energy
of the system as a whole due to external force fields, including the
energy of displacement of the surroundings of the system. It keeps account
of the gains and losses of energy of the system that are due to changes in
its internal state. The internal energy is measured as a difference from a
reference zero defined by a standard state. The difference is determined
by thermodynamic processes that carry the system between the reference
state and the current state of interest.
Zero-Point Energy.
Renewable Clean Energy
Renewable Energy is defined as energy that is collected from
resources which are naturally replenished on a human timescale, such as
sunlight, wind, rain, tides, waves, and geothermal heat. Renewable energy
often provides energy in four important areas: electricity generation, air
and water heating/cooling, transportation, and rural (off-grid) energy
services.
Renewable Resource is a
natural
resource which replenishes to overcome resource depletion caused by
usage and consumption, either through biological reproduction or other
naturally recurring processes in a finite amount of time in a human time
scale. Renewable resources are a part of
Earth's natural environment and
the largest components of its ecosphere. A positive life cycle assessment
is a key indicator of a resource's
sustainability.
Solar Energy
-
Wind Energy -
Geo-Thermal-Energy
-
Hydro-Power
-
Ocean Wave Energy -
Waste Energy
Renewable Energy World -
Smart Grids
Public Utilities Commission is a governing body that
regulates the rates and services of a
public utility, such as an electric utility. In some cases, government
bodies with the title "public service commission" may be civil service
oversight bodies, rather
than utilities regulators. (utility regulatory commission (URC), or public
service commission (PSC)).
139
countries could be powered by 100 percent wind, water, and solar energy by
2050 (image)
We can get 100 Percent of our Energy from Renewable Sources?
Zero Point Energy -
Energy-Plus-House
Energy Harvesting is the process by which energy is derived
from external sources (e.g., solar power, thermal energy, wind energy,
salinity gradients, and kinetic energy, also known as ambient energy),
captured, and stored for small, wireless autonomous devices, like those
used in wearable electronics and wireless sensor networks.
Kardashev Scale
is a method of measuring a civilization's level of technological
advancement based on the amount of energy a civilization is able to use.
A Type I civilization—also called a
planetary civilization—can use and store all of the energy available on
its planet.
A Type II civilization—also
called a stellar civilization—can harness the total energy of its planet's
parent star.
A Type III civilization—also
called a galactic civilization—can control energy on the scale of its
entire host galaxy. The scale is hypothetical, and regards energy
consumption on a cosmic scale. Various extensions of the scale have since
been proposed, including a wider range of power levels (types 0, IV and V)
and the use of metrics other than pure power.
Ground State of a
quantum mechanical system
is its lowest-energy state; the energy of the ground state is known as the
Zero-Point Energy of the system. An excited state is any state with energy
greater than the ground state. The ground state of a quantum field theory
is usually called the vacuum state or the vacuum.
Energy Development is the field of activities focused on obtaining
sources of energy from natural resources. These activities include
production of conventional, alternative and renewable sources of energy,
and for the recovery and reuse of energy that would otherwise be wasted.
Energy conservation and efficiency measures reduce the demand for energy
development, and can have benefits to society with improvements to
environmental issues.
Renewable Clean Energy should be Self Replicating and Perpetual. Example: If you build
wind turbines then the the energy that those wind turbines
produce should be used to produce more wind turbines, then so on
and so on until you have enough energy for all your needs, the
same with
solar energy.
Sustainable.
Self-Replicating Machines is a type of autonomous
robot that is capable of
reproducing itself
autonomously
using raw materials found in the environment, thus exhibiting
self-replication in a way analogous to that found in nature.
Self-Replication
is any behavior of a dynamical
system that yields construction of an
identical copy of itself. Biological cells, given suitable environments,
reproduce by
Cell Division. During cell division,
DNA is replicated and
can be transmitted to offspring during
reproduction.
National Renewable Energy -
Renewable Incentives
GE Energy
Financial Services. Renewable energy is our fastest growing business
segment and represents half of our business. We have committed $12 billion
for our portfolio of renewable energy projects.
Renewable Energy Counsel -
Sustainable Power Institute
New Energy Fund -
Renewable Clean Fuel -
New Energy Technologies
Renewable Energy -
Renewable Energy -
Renewable Energy Efficiency
Websites
Powered by Renewable Energy -
Hosting
Powered by Renewable Energy
Energy Academy
is a sustainable energy system bringing together projects, partners and
networks to work on the energy transition, based on three pillars:
education, research and innovation. Energy Academy Europe is located at
Zernike Campus Groningen in The Netherlands. Markets, technology,
policies, laws & regulations and society at large are part of the energy
system. Our energy future depends on the integration of the
system-elements. Through our projects we aim to move towards system
integration with the ultimate goal of transitioning to a sustainable
energy system.
Turning every Home and
Building into Power Generators instead of being energy slaves and dependent.
Electrical Generators
75 Percent of our Power comes from some form of
Combustion.
Natural Resources Defense Council.
Soft Energy Path
is an alternative future where energy efficiency and appropriate renewable
energy sources steadily replace a centralized energy system based on
fossil and nuclear fuels.
Micro Generation is the small-scale generation of
heat and
electric power by individuals, small businesses and communities to meet
their own needs, as alternatives or supplements to traditional centralized
grid-connected power.
Roadmap to renewables unites climate and sustainability goals. Are
clean energy plans missing the forest for the GHGs? A new study presents a
roadmap to renewables that unites climate change and biodiversity goals.
Renewable Energy Milestones and Statistics - Energy Independent Places
Burlington Vermont is running on 100 Percent Renewables. (2015).
Babcock Ranch Florida generates more energy than the city consumes.
The town is approximately 17,000-acre (68.80 km2; 26.56 sq mi). A planned
community under development in Southwest Florida that was approved as part
of a public-private partnership strategy with the State of Florida and
local governments. The deal established the neighboring
Babcock Ranch
Preserve. An on-site 75-megawatt solar photovoltaic array broke ground
in 2016 by Florida Power & Light Company, which will combine with a
network of solar rooftop arrays on commercial buildings to generate more
energy than the city consumes, making Babcock Ranch the
first solar-powered city in the United States.
According to Florida Power & Light chief development officer Eric Silagy,
the
photovoltaic solar plant
to be built at Babcock Ranch will occupy rooftops throughout the city plus
400 acres (1.62 km2; 0.63 sq mi) of land. Babcock Ranch's solar power
plant will connect to the
main grid so a
consistent energy supply can be maintained by importing power on overcast
days and exporting it on sunny days. The objective in using a solar
generator to power the city is a reduction in carbon emissions and
dependence on oil, and to lower energy bills for residents, aided by
proposed "
smart home" energy
efficiency technology. Residents and businesses will utilize smart grid
technology to monitor and control their energy consumption. Approximately
ninety percent of Babcock Ranch's total land will remain undeveloped.
Long Island Solar Farm is the largest photovoltaic array in
the eastern U.S (200 Acres) made up of 164,312
solar
panels from BP Solar which provide enough electricity for
roughly 4,500 households.
Depends on Efficiency.
California. Starting in 2020,
virtually all new homes in California will be required to incorporate
advanced efficiency measures and rooftop solar — in an historic
development for clean energy in the state. “There are 100,000 customers
annually that will see the acquisition of solar as a normal part of their
home transaction.” The California Energy Commission (CEC) voted
unanimously to adopt the policy today as part of the state’s
Building Energy
Efficiency Standards, following more than two years of work with a
wide range of stakeholders to develop the technical requirements. Updates
to the Title 24 standards are projected to reduce home energy use by 53
percent compared to the current code, saving Californians $1.7 billion in
energy costs over the next 30 years. This calculation, conducted by the
CEC, does not take into account increased energy demands or a reductions
in technology costs, which could result in even greater savings over time.
Title 24 Building Energy Efficiency Standards are designed to ensure
new and existing buildings achieve energy efficiency and preserve outdoor
and indoor environmental quality. These measures (Title 24, Part 6) are
listed in the
California Code of Regulations. The California Energy Commission is
responsible for adopting, implementing and updating building energy
efficiency. Local city and county enforcement agencies have the authority
to verify compliance with applicable building codes, including energy
efficiency. The new rules apply specifically to all new residences and
major home renovations on buildings under three stories, starting on
January 1, 2020. In the event a building isn’t suitable for a rooftop
array, the standards require homes have access to community solar or
offset energy usage through additional efficiency gains, while some homes
may be exempt. Around 15,000 new homes are built each year that include
solar panels, according to the CEC. When the new standards take effect,
that number is expected to jump to around 100,000 new solar homes per
year. “This is an undeniably historic decision for the state,” said
Abigail Ross Hopper, president and CEO of the
Solar Energy Industries
Association. According to SEIA, the change will amount to an
additional 200 megawatts of solar deployed in the state annually, which is
a conservative estimate given some homes will be able to comply with solar
systems under 3 kilowatts. For comparison, California added 858 megawatts
of residential solar last year from 127,000 new residential solar
systems, with an average size of 7 kilowatts.
Connecticut
has 50 acres of solar panels spread over about 90
acres of land at Pleasant View Farms.
Somers Solar Center
23,150
Kyocera Solar Panels that will generate roughly 5 megawatt
(MW) of alternating current. On average, it produces enough
power for 1,500 to 5,000 homes per year?
In 2015, 313,000 Connecticut households still cannot afford
their monthly energy needs.
Foreclosures
Arizona,
The
U.S. Navy has invested an undisclosed amount in the Mesquite
solar farm in the sun-rich state, allowing for an expansion of the
facility that is anticipated to make it the world’s largest
solar farm. Located about 40 miles west of Phoenix, will provide
210 megawatts of direct power.
Portugal Made More Than Enough Renewable Energy To Power The Whole Country
in March 2018.
Grid Alternatives
providing solar power for low-income families across the United
States while providing volunteers and job trainees with hands-on
solar installation experience. California's Single Family
Affordable Solar Homes program (SASH).
Community Choice Aggregation (wiki) -
The
Future of Energy
Costa Rica’s energy utility hasn’t burned any fossil fuel in
2015. 80 percent is from hydroelectric plants.
Chile has so much solar energy that the price of solar
frequently drops to zero. Since 2013, Chile has quadrupled its solar
capacity in the central grid to 770 megawatts.
Solar Power By
Country
Nicaragua's Renewable Energy Revolution Picks Up Steam.
Germany
As of May 1, 2012, was producing 50% of their energy via renewables.
German Village Produces More Energy than it Needs.
India is creating the world’s largest solar farm. The country
announced that it will build a 750-megawatt plant on 1,500 acres
of barren, government-owned land in the northeastern Madhya
Pradesh state. Expected to be in operation until 2017.
Morocco is working on world’s largest
concentrated solar power plant.
Ouarzazate Solar Power Station is a 160 MW power plant
that will have a
final capacity of around 500 MW, enough to power a million
homes.
Public Private Partnership - Noor I
Iceland's energy needs are amply met by
hydro and geothermal power.
China: Builds 4,000 new
wind turbines a year.
Produces more wind turbines and has more wind turbines in
operation then all of the top ten countries combined. China has
the largest wind farm in the world. (10 Gigawatt) Plans to build
7 more just like it.
China plans to build 100 million electric car charging stations
by 2020.
Other China Info.
China already produces more solar
electricity than any other country, with an installed base of
over 30 gigawatts and plans to reach 43 gigawatts by the end of
2016. China will invest 2.5 trillion yuan (
$361
billion) into renewable power generation by 2020.
Australia (2010 - 2015), solar photovoltaic capacity grew from
130 megawatts to 4.7 gigawatts, an annual growth rate of 96%.
The
Federal Energy
Information Agency is forecasting a 9.5 percent increase in
green energy in 2016.
Scotland uses
Tidal Energy to create 1.2GW of green energy - enough to
power up to 750,000 homes. The same amount of power as a nuclear
power station. One-third of the UK's total electricity needs
could be met by
Tidal
Power alone. Scotland is poised to generate more than 50
percent of its electricity from onshore wind power and other
renewable sources this year 2016.
Eigg
generates virtually 100% of its electricity using renewable energy. The
Small Island in the Scottish Inner Hebrides lies to the south of the Skye
and to the north of the Ardnamurchan peninsula. Eigg is 9 kilometres (5.6
mi) long from north to south, and 5 kilometres (3.1 mi) east to west.
With an area of 12 square miles (31 km2), it is the second largest of the
Small Isles after Rùm.
Bankruptcy Looms for Spain's Clean Energy Giant Abengoa
Climate Change
Community Choice Aggregation.
Enables local governments to aggregate electricity demand within
their jurisdictions in order to procure alternative energy
supplies while maintaining the existing electricity provider for
transmission and distribution services.
PS62: Net Zero Energy School
How do
different types of Renewable Energy work?
(youtube)
Amory Lovins: A 50 year plan for Energy (video)
Reinventing FireBIG
5
Energy Generation Under the Obama Administration -
Data Visualizing Tools
Energy Conservation Resources and Information
Ecological Society of America
Energy Awareness Videos
Zero-Point Energy
Energy Independence Act (wiki)
Rational Middle
Department of Energy
Department of Energy
Energy Efficiency
International Energy Agency
International Energy Assoc.
Advanced Research Projects Agency
Energy Information Administration
Synapse Energy
Energy Research, Maryland
Nuclear Fusion
Nano Technology
Clean Energy Technologies
Center for
Energy Efficiency
Global Energy
Network Institute
Get
Energy Active
Native
Energy
Energy
SaversNorth American
Power
Energy Deregulation
Utility Credit
Toupe Phone App check prices what
you are being charged for Electricity
Clean Tech Companies
Science
FairsHuman Energy
Akon
Lighting Africa 600 million lack electricity access.
15 countries of operation 480 communities covered. 100,000 solar
street lamps. 1,200 solar micro-grids. 102,000 solar domestic
kits. 75,000$ per village on average, 5,500 indirect jobs
created.
Portugal kept its lights on with renewable energy alone for four
consecutive days. Electricity consumption in the country was
fully covered by solar, wind and hydro power in an extraordinary 107-hour run.
Energy Conservation - Efficiency
Conservation is the
prevention of
wasteful use of a
resource.
Alternative and Renewable Energy Sources will not be
effective alone.
We need to learn how to
Conserve Energy
and
Use Our Energy Wisely and Effectively without waste, while at the same time, use our
Advanced Technologies
to manufacture products that consume less energy. Clean energy is just one step forward in helping us fully
understand how we see and use our energy. We have to
learn not
to waste energy, we have to learn not to abuse energy or
misuse
energy. Because in reality, energy is power, literally. And we
all know about the
Corrupted influences of Power
and how power destroys the goodness in people and
distorts our understanding
of the world. So energy is just
another form of power that we need to be fully educated about,
otherwise power will continue to
hurt us more then it benefits us, and power will also continue
to destroy our environment, since it has from the beginning.
If an
Energy Policy does not address these facts then the policy
is a lie, a scam and a waste of precious time, again.
Efficiency -
Financial Management
-
Frugal.
Learning to
Conserve Energy and not Waste it -
Productive
Efficient Energy Use is the goal to
reduce the amount of energy
required to provide products and services. For example, insulating a
home allows a building to use less heating and cooling energy to achieve
and maintain a comfortable temperature. Installing LED lighting,
fluorescent lighting, or natural skylight windows reduces the amount of
energy required to attain the same level of illumination compared to using
traditional incandescent light bulbs. Improvements in energy efficiency
are generally achieved by adopting a more efficient technology or
production process or by application of commonly accepted methods to
reduce energy losses. There are many motivations to improve energy
efficiency. Reducing energy use reduces energy costs and may result in a
financial cost saving to consumers if the energy savings offset any
additional costs of implementing an energy-efficient technology. Reducing
energy use is also seen as a solution to the problem of reducing
greenhouse gas emissions. According to the International Energy Agency,
improved energy efficiency in buildings, industrial processes and
transportation could reduce the world's energy needs in 2050 by one third,
and help control global emissions of greenhouse gases. Another important
solution is to remove government-led energy subsidies that promote high
energy consumption and inefficient energy use in more than half of the
countries in the world. Energy efficiency and renewable energy are said to
be the twin pillars of sustainable energy policy[6] and are high
priorities in the sustainable energy hierarchy. In many countries energy
efficiency is also seen to have a national security benefit because it can
be used to reduce the level of energy imports from foreign countries and
may slow down the rate of energy at which domestic energy resources are
depleted.
Energy Saving Tools and Methods -
Energy KidsEnergy Saving Methods
-
Energy Use Assessments
Grids -
Smart Grid -
Green
Building -
Protection
Rebound Effect is the reduction in expected gains from new
technologies that increase the efficiency of resource use, because of
behavioral or other systemic responses. These responses usually tend to
offset the beneficial effects of the new technology or other measures
taken. While the literature on the rebound effect generally focuses on the
effect of technological improvements on energy consumption, the theory can
also be applied to the use of any natural resource or other input, such as
labor. The rebound effect is generally expressed as a ratio of the lost
benefit compared to the expected environmental benefit when holding
consumption constant. For instance, if a 5% improvement in vehicle fuel
efficiency results in only a 2% drop in fuel use, there is a 60% rebound
effect (since ?(5-2)/5 = 60%). The 'missing' 3% might have been consumed
by driving faster or further than before. The existence of the rebound
effect is uncontroversial. However, debate continues as to the magnitude
and impact of the effect in real world situations. Depending on the
magnitude of the rebound effect, there are five different rebound effect
(RE) types.
Risk Assessment.
Energy Slave is that quantity of energy
(ability to do work) which, when used to construct and drive non-human
infrastructure (machines, roads, power grids, fuel, draft animals,
wind-driven pumps, etc.) replaces a unit of
human labor (actual work). An
energy slave does the work of a person, through the consumption of energy
in the non-human infrastructure.
Energy Poverty is lack of access to modern
energy services. It refers to the situation of large numbers of people in
developing countries whose well-being is negatively affected by very low
consumption of energy, use of dirty or polluting fuels, and excessive time
spent collecting fuel to meet basic needs.
Electricity.
Reserves to Production Ratio is the
remaining amount of a non-renewable resource, expressed in time. While
applicable to all natural resources, the RPR is most commonly applied to
fossil fuels, particularly petroleum and natural gas.
Energy Returned on Energy Invested is the
ratio of the amount of usable energy delivered from a particular energy
resource to the amount of energy used to obtain that energy resource. It
is a distinct measure from energy efficiency as it does not measure the
primary energy inputs to the system, only usable energy.
Bennett Acceptance Ratio is an algorithm for estimating the difference
in free energy between two systems (usually the systems will be simulated on the computer).
Efficient Lighting - Light-Emitting Diode - LED
LED Lamp is a
light-emitting diode product which is
assembled into a lamp (or light bulb) for use in lighting fixtures.
LED
lamps have a lifespan and electrical efficiency which are several times
greater than incandescent lamps, and are significantly more efficient than
most fluorescent lamps, with some chips able to emit more than 300 lumens
per watt (as claimed by
Cree and some other LED manufacturers). The first LEDs were
developed in the early 1960s.
Solid-State
Lighting refers to a type of lighting that uses semiconductor
light-emitting diodes (LEDs),
organic light-emitting diodes (OLED), or
polymer light-emitting diodes
(PLED) as sources of illumination rather than electrical filaments, plasma
(used in arc lamps such as fluorescent lamps), or gas. The term "
solid
state" refers commonly to light emitted by solid-state
electroluminescence, as opposed to incandescent bulbs (which
use thermal radiation) or fluorescent tubes. Compared to incandescent
lighting, SSL creates visible light with reduced heat generation and less
energy dissipation. Most common "white" LEDs convert blue light from a
solid-state device to an (approximate) white light spectrum using
photoluminescence, the same principle used in conventional fluorescent
tubes. The typically small mass of a solid-state electronic lighting
device provides for greater resistance to shock and vibration compared to
brittle glass tubes/bulbs and long, thin filament wires. They also
eliminate filament evaporation, potentially increasing the life span of
the illumination device. Solid-state lighting is often used in traffic
lights and is also used frequently in modern vehicle lights, street and
parking lot lights, train marker lights, building exteriors, remote
controls etc. Controlling the light emission of LEDs may be done most
effectively by using the principles of nonimaging optics. Solid-state
lighting has made significant advances in industry. In the entertainment
lighting industry, standard incandescent tungsten-halogen lamps are being
replaced by solid-state light lighting fixtures.
Light-Emitting Diode is a
semiconductor light source that emits
light
when current flows through it.
Electrons in the semiconductor recombine
with electron holes, releasing energy in the form of
photons. This effect
is called
electroluminescence. The
color of the light (corresponding to
the energy of the photons) is determined by the energy required for
electrons to cross the band gap of the semiconductor. White light is
obtained by using multiple semiconductors or a layer of light-emitting
phosphor on the semiconductor device.
OLED
is a light-emitting diode in which the emissive electroluminescent layer
is a film of
organic compound that emits light
in response to an electric current. This organic layer is situated between
two electrodes; typically, at least one of these electrodes is
transparent. OLEDs are used to create
digital displays in devices such as television screens, computer
monitors, portable systems such as smartphones, handheld game consoles and
PDAs. A major area of research is the development of white OLED devices
for use in solid-state lighting applications.
Scientists find a cheaper way to light up OLED screens using new
copper-based LEDs instead of iridium.
Physicists use nanostructures to free photons for highly efficient white
OLEDs. Since light-emitting diodes only produce
monochrome light, manufacturers use various additive colour-mixing
processes to produce white light.
Brown Outs don't affect
LED bulbs because they are most likely fitted to use a wide-range of
power. LED's usually only require a few volts (sometimes <5V) therefore as
long as that much voltage makes it through, they stay on. If it has the
right amount electronics it could convert almost any voltage to its needs.
Lighting
is the deliberate use of
light to achieve a
practical or aesthetic effect. Lighting includes the use of both
artificial light sources like lamps and light fixtures, as well as natural
illumination by capturing daylight. Daylighting (using windows, skylights,
or light shelves) is sometimes used as the main source of light during
daytime in buildings. This can save energy in place of using artificial
lighting, which represents a major component of energy consumption in
buildings. Proper lighting can enhance task performance, improve the
appearance of an area, or have positive psychological effects on
occupants. Indoor lighting is usually accomplished using light fixtures,
and is a key part of interior design. Lighting can also be an intrinsic
component of landscape projects.
Luminescence -
How Light Effects the
Brain -
Solar Light Tubes
-
Indoor Growing
Color Rendering index is a quantitative measure of the
ability of a light source to reveal the
colors of various objects faithfully in comparison with an ideal or
natural light source. Light sources with a high CRI are desirable in
color-critical applications such as neonatal care, photography and
cinematography. It is defined by the International Commission on
Illumination (CIE) as follows: Color rendering: Effect of an illuminant on
the color appearance of objects by conscious or subconscious comparison
with their color appearance under a reference illuminant.
Materials Research Team Lights the Way for More Efficient LEDs.
Nanocrystals made of cesium lead halide perovskites (CsPbX3), is the first
discovered material which the ground exciton state is "bright,” making it
an attractive candidate for more efficient solid-state lasers and
light emitting diodes (LEDs).
Lighting
Prize -
Energy Saving LED Street Light Design (PDF)
Engineered Light to Improve Health and Food. Intentionally controlled
light can help regulate human health and productivity by eliciting various
hormonal responses.
Tailored LED wavelengths and intensities also can efficiently
stimulate plant growth, alter their shapes and increase their nutritional
value, opening a new world of scientific and technological possibilities
for
indoor farming.
Light Therapy.
Quantum Dot Display is a
display
device that uses quantum dots (QD), semiconductor nanocrystals which
can produce pure monochromatic red, green, and blue light. Photo-emissive
quantum dot particles are used in LED-backlit LCDs, where a QD layer
converts the backlight to emit pure basic colors; this improves display
brightness and color gamut by reducing light losses and color crosstalk in
RGB color filters.
Quantum Dot are very small
semiconductor
particles, only several
nanometres
in size, so small that their optical and electronic properties differ from
those of larger particles. They are a central theme in nanotechnology.
Many types of quantum dot will emit light of specific frequencies if
electricity or light is applied to them, and these frequencies can be
precisely tuned by changing the dots' size, shape and material, giving
rise to many applications.
AMOLED
is a
display technology used in
smartwatches, mobile devices, laptops, and televisions. OLED describes a
specific type of thin-film-display technology in which organic compounds
form the electroluminescent material, and active matrix refers to the
technology behind the addressing of pixels.
UV LEDs are more environmentally friendly
as they do not contain harmful mercury, do not produce ozone, and consume
less energy. Use of UV-C LEDs is rapidly growing in applications such as
germicidal (UVGI) for air, surface and water purification
Ultraviolet Germicidal Irradiation is a disinfection method that uses
short-wavelength ultraviolet (ultraviolet C or UV-C) light to kill or
inactivate microorganisms by destroying nucleic acids and disrupting their
DNA, leaving them unable to perform vital cellular functions. UVGI is used
in a variety of applications, such as food, air, and water purification.
UV-C light is weak at the Earth's surface since the ozone layer of the
atmosphere blocks it. UVGI devices can produce strong enough UV-C light in
circulating air or water systems to make them inhospitable environments to
microorganisms such as bacteria, viruses, molds, and other pathogens. UVGI
can be coupled with a filtration system to sanitize air and water. The
application of UVGI to disinfection has been an accepted practice since
the mid-20th century. It has been used primarily in medical sanitation and
sterile work facilities. Increasingly, it has been employed to sterilize
drinking and wastewater since the holding facilities are enclosed and can
be circulated to ensure a higher exposure to the UV. UVGI has found
renewed application in air purifiers.
Energy Efficient Appliances -
Energy Monitoring
Bioluminescence
-
Biology -
Lasers -
Li-Fi (information
transfer)
Gratify
Light (vimeo)
Gravitylight 2 made in Africa
Free
Electricity from Gravity and Perpetual
Motion by Daniel Bentea!
(video)
M Powerd Luci
Solar Lights
Gravity Light 360 Degree Magnetic LED
LED Lamp Powered by Water
NowLight: Renewable Energy on Demand
Wireless Lighting System: verve
ZOBO: Brilliant Full-Color LED Spot-Lighting
Ellum Solar - Light Different
U.S. Lighting Energy Policy (wiki) -
Saving Electricity
Brighten up a Dark Room -
Choose the Perfect Light Bulb for Your Lighting Fixture -
Architectural Lighting Design.
Wi-Fi Smart Bulb -
ilumi Bluetooth
Control LED
SmartCharge 2.0 LED light bulb integrated with a
rechargeable lithium ion battery, works even during a power
outage.
LitraTorch versatile adventure LED light - photo, video, underwater,
bike, camp, drone & fun.
Artificial
Skylight (youtube) -
Coelux
LED Resources -
Light Emitting Diodes
-
LED Lights
-
LED Lighting
Types -
Nano-Leaf -
LED 60W Bulb Replacement
(amazon)
-
Motion-Sensitive LED Light
(amazon)
-
RV Sensor & Receiver
(amazon)
-
Energy Monitoring -
Lumiette -
Luminaid -
Lemnis
Lighting -
LED Lights - UK
-
Luminoodle -
Lights for Growing
Food -
Kichler Lighting Experts -
Lightology -
Osram -
Lutron
-
CFL's.
Electric Light
is a device that produces visible light from electric current. It is the
most common form of artificial lighting and is essential to modern
society, providing interior lighting for buildings and exterior light for
evening and nighttime activities. In technical usage, a replaceable
component that produces light from electricity is called a lamp. Lamps are
commonly called light bulbs; for example, the incandescent light bulb.
Lamps usually have a base made of ceramic, metal, glass, or plastic, which
secures the lamp in the socket of a light fixture. The electrical
connection to the socket may be made with a screw-thread base, two metal
pins, two metal caps or a bayonet cap. The three main categories of
electric lights are incandescent lamps, which produce light by a filament
heated white-hot by electric current, gas-discharge lamps, which produce
light by means of an electric arc through a gas, and
LED
lamps, which produce light by a flow of electrons across a band gap in
a semiconductor. Before electric lighting became common in the early 20th
century, people used candles, gas lights, oil lamps, and fires. English
chemist Humphry Davy developed the first incandescent light in 1802,
followed by the first practical electric arc light in 1806. By the 1870s,
Davy's arc lamp had been successfully commercialized, and was used to
light many public spaces. Efforts by Swan and Edison led to commercial
incandescent light bulbs becoming widely available in the 1880s, and by
the early twentieth century these had completely replaced arc lamps. The
energy efficiency of electric lighting has increased radically since the
first demonstration of arc lamps and the incandescent light bulb of the
19th century. Modern electric light sources come in a profusion of types
and sizes adapted to many applications. Most modern electric lighting is
powered by centrally generated electric power, but lighting may also be
powered by mobile or standby electric generators or battery systems.
Battery-powered light is often reserved for when and where stationary
lights fail, often in the form of flashlights or electric lanterns, as
well as in vehicles.
How Light Effects the Brain.
Incandescent Light Bulb is an electric light with a wire filament
heated until it glows. The filament is enclosed in a bulb to protect the
filament from oxidation. Current is supplied to the filament by terminals
or wires embedded in the glass. A bulb socket provides mechanical support
and electrical connections. Incandescent bulbs are manufactured in a wide
range of sizes, light output, and voltage ratings, from 1.5 volts to about
300 volts. They require no external regulating equipment, have low
manufacturing costs, and work equally well on either alternating current
or direct current. As a result, the incandescent bulb became widely used
in household and commercial lighting, for portable lighting such as table
lamps, car headlamps, and flashlights, and for decorative and advertising
lighting. Incandescent bulbs are much less efficient than other types of
electric lighting, converting less than 5% of the energy they use into
visible light. The remaining energy is lost as heat. The luminous efficacy
of a typical incandescent bulb for 120 V operation is 16 lumens per watt,
compared with 60 lm/W for a compact fluorescent bulb or 150 lm/W for some
white LED lamps. Some applications use the heat generated by the filament.
Heat lamps are made for uses such as incubators, lava lamps, and the
Easy-Bake Oven toy. Quartz tube lamps are used for industrial processes
such as paint curing or for space heating. Incandescent bulbs typically
have short lifetimes compared with other types of lighting; around 1,000
hours for home light bulbs versus typically 10,000 hours for compact
fluorescents and 20,000–30,000 hours for lighting LEDs. Incandescent bulbs
can be replaced by fluorescent lamps, high-intensity discharge lamps, and
light-emitting diode lamps (LED). Some areas have implemented phasing out
the use of incandescent light bulbs to reduce energy consumption.
Dimmer are
devices connected to a light fixture and used to lower the brightness of
light. By
changing the voltage
waveform applied to the lamp, it is possible to lower the intensity of
the light output. Although variable-voltage devices are used for various
purposes, the term dimmer is generally reserved for those intended to
control light output from resistive incandescent, halogen, and (more
recently) compact fluorescent lights (CFLs) and light-emitting diodes (
LEDs).
More specialized equipment is needed to dim fluorescent, mercury vapor,
solid-state, and other arc lighting. When solid-state dimmers came into
use, analog remote control systems (such as 0-10 V lighting control
systems) became feasible. The wire for the control systems was much
smaller (with low current and lower danger) than the heavy power cables of
previous lighting systems. Each dimmer had its own control wires,
resulting in many wires leaving the lighting control location.
Semiconductor dimmers switch on at an adjustable time (phase angle) after
the start of each alternating current half-cycle, thereby altering the
voltage waveform applied to lamps and so changing its RMS effective value.
Because they switch instead of absorbing part of the voltage supplied,
there is very little wasted power. Dimming can be almost instantaneous and
is easily controlled by remote electronics. This development also made it
possible to make dimmers small enough to be used in place (within the
pattress) of normal domestic light switches. dimmer switch rapidly turns a
light circuit on and off to reduce the energy flowing to a light switch.
The central element in this switching circuit is a triode alternating
current switch, or triac. A triac is a small semiconductor device, similar
to a diode or transistor.
Smart Grid - Electric Power Transmission - Power Distribution
Smart Grid is an
electrical
grid which includes a
variety of operational and
energy measures including smart meters, smart
appliances,
renewable energy resources, and energy efficiency resources.
Electronic power conditioning and control of the
production and
distribution of
electricity are important aspects of the
Smart Grid.
Electrical Grid
is an
interconnected
network for delivering electricity from suppliers to
consumers. It consists of generating stations that produce
electrical
power, high-voltage transmission lines that carry power from distant
sources to demand centers, and distribution lines that connect individual
customers. (Looped not Linear).
Infrastructure.
Microgrid is a local, independent power
grid that can run without
electricity from the main network.
Micro-Grid Knowledge.
Nano-Grid -
Pico-Grid -
Micro-Grid -
Micro-Hydro -
Smart Inverters -
Off-Grid.
Synchronous Grid of Continental Europe is the largest synchronous
electrical grid by connected power in the world. It is interconnected as a
single phase-locked 50 Hz mains frequency electricity grid that supplies
over 400 million customers in
24 countries,
including most of the European Union. In 2009, 667 GW of production
capacity was connected to the grid, providing approximately 80 GW of
operating reserve margin. The transmission system operators operating this
grid formed the Union for the Coordination of Transmission of Electricity
(UCTE), now part of the European Network of Transmission System Operators
for Electricity (ENTSO-E).
Wide Area Synchronous Grid is a three-phase electric power grid that
has regional scale or greater that operates at a synchronized utility
frequency and is electrically tied together during normal system
conditions.
North American Power Transmission Grid is divided into multiple wide
area synchronous grids.
Western
Interconnection is a wide area synchronous grid and one of the two
major alternating current power grids in the continental U.S. power
transmission grid. The other major wide area synchronous grid is the
Eastern Interconnection. The three minor interconnections are the
Québec Interconnection, the
Texas Interconnection, and the
Alaska
Interconnection.
Super
Grid is a wide-area transmission network that is intended to make
possible the trade of high volumes of electricity across great distances.
It is sometimes also referred to as a "mega grid". Super grids can support
a global energy transition by smoothing local fluctuations of wind energy
and solar energy. In this context they are considered as a key technology
to mitigate global warming. Super grids typically use High-voltage direct
current (HVDC) to transmit electricity long distances. The latest
generation of HVDC power lines can transmit energy with losses of only
1.6% per 1000 km.
Unified Smart Grid is a proposal for a United States wide area grid
that is a national interconnected network relying on a high capacity
backbone of electric power transmission lines linking all the nation's
local electrical networks that have been upgraded to smart grids. Europe's
analogous project is sometimes referred to as the SuperSmart Grid, a term
that also appears in the literature describing the Unified Smart Grid.
Super Smart Grid is a hypothetical wide area electricity network
connecting Europe with northern Africa, the Middle East, Turkey and the
IPS/UPS system of CIS countries. The system would unify super grid and
smart grid capabilities into a comprehensive network. There are no planned
locations for infrastructure or schedule explicitly for the SSG; the name
is used to discuss the economic and technological feasibility of such a
network and ways that it might gain political support. The ambitious
upgrade and unification of current transmission and/or distribution grids
finds support among advocates of large scale utilization of alternative
energy, and as well as advocates of enhanced energy security for Europe.
The SSG proposal was initiated by the European Climate Forum and at the
Potsdam Institute for Climate Impact Research by Antonella Battaglini and
colleagues.
Demand Response
is a change in the power consumption of an electric utility customer to
better match the demand for power with the supply.
Curtailment is when the output of
renewable
energy like wind power is curtailed or reduced at certain times because
it's
making more power then people can use. But when
batteries become more
available then the extra energy produced can be saved an stored for a
later time when people need more energy.
Decentralized Networks -
Self Managing
Frequency Containment Reserve in the
European Union Internal Electricity Balancing Market means operating
reserves necessary for constant containment of frequency deviations or
fluctuations from nominal value in order to constantly maintain the power
balance in the whole synchronously interconnected system.
Energy Storage.
Where Does the Electrical Power Start From?
Power Station
is an industrial facility for the
generation of electric power. Most power
stations contain one or more
generators, a rotating machine that converts
mechanical power into electrical power. The relative motion between a
magnetic field and a
conductor creates an electrical current. The energy
source harnessed to turn the generator varies widely. Most power stations
in the world burn fossil fuels such as coal, oil, and natural gas to
generate electricity. Others use nuclear power, but there is an increasing
use of
cleaner renewable sources such as solar, wind, wave and
hydroelectric. (power station is also known as a power plant or powerhouse and sometimes
generating station or generating plant).
Base Load on a grid
is
the minimum level of demand on an electrical grid over 24 hours. Base
load power sources are power stations which can consistently generate the
electrical power needed to satisfy this minimum demand. Historically,
large power grids have used base load power plants exclusively. However,
there is no specific technical requirement for this to be so. The base
load requirement can equally well be met by the appropriate mix of
intermittent power sources, peaking power plants, hydroelectric power and
other sources.
Peaking Power
Plant are power plants that generally
run only
when there is a high demand, known as peak demand, for electricity.
Because they supply power only occasionally, the power supplied commands a
much higher price per kilowatt hour than base load power. Peak load power
plants are dispatched in combination with base load power plants, which
supply a dependable and consistent amount of electricity, to meet the
minimum demand.
Engineers Develop Tools to Share Power from Renewable Energy Sources
During Outages. The algorithms allow homes to draw on power from
renewable energy sources while they're disconnected from the grid.
Grid Wise
-
Beacon Power.
Overhead Power Line is a structure used in
electric power transmission and distribution to
transmit electrical energy across large distances.
It consists of one or more conductors (commonly multiples of three)
suspended by towers or poles. Since most of the insulation is provided by
air, overhead power lines are generally the lowest-cost method of power
transmission for large quantities of electric energy.
Warning: Parallel running power lines can
induce voltages in nearby lines that are disconnected.
High-Voltage Direct Current electric power
transmission system that uses
direct current for the bulk
transmission of electrical power, in contrast with the more common
alternating current systems.
(also called a power superhighway or an electrical superhighway). Most
HVDC links use voltages between 100 kV and 800 kV. A 1,100 kV link in
China was completed in 2019 over a distance of 3,300 km with a power of 12
GW. With this dimension, intercontinental connections become possible
which could help to deal with the fluctuations of wind power and
photovoltaics. HVDC allows power transmission between unsynchronized AC
transmission systems. Since the power flow through an HVDC link can be
controlled independently of the phase angle between source and load, it
can stabilize a network against disturbances due to rapid changes in
power. HVDC also allows transfer of power between grid systems running at
different frequencies, such as 50 Hz and 60 Hz. This improves the
stability and economy of each grid, by allowing exchange of power between
incompatible networks. The modern form of HVDC transmission uses
technology developed extensively in the 1930s in Sweden (ASEA) and in
Germany. Early commercial installations included one in the Soviet Union
in 1951 between Moscow and Kashira, and a 100 kV, 20 MW system between
Gotland and mainland Sweden in 1954. Before the Chinese project of 2019,
the longest HVDC link in the world was the Rio Madeira link in Brazil,
which consists of two bipoles of ±600 kV, 3150 MW each, connecting Porto
Velho in the state of Rondônia to the São Paulo area. The length of the DC
line is 2,375 km (1,476 mi).
Electric Power Transmission is the bulk movement of
electrical energy from a generating site, such as a
power plant, to an
electrical substation. The interconnected lines which facilitate this
movement are known as a transmission network. This is distinct from the
local wiring between high-voltage substations and customers, which is
typically referred to as
electric power distribution. The combined transmission and
distribution network is known as the "power grid" in North America, or
just "the grid". In the United Kingdom, India, Malaysia and New Zealand,
the network is known as the "National Grid".
Transmission Loss from 7% - 30%. The transmission over long
distances
creates power losses. The major part of the energy losses comes from
Joule
effect in transformers and power lines. The energy is lost as heat in
the conductors. The overall losses between the power plant and
consumers is then in the range between 8 and 15%. "Lost in Transmission":
How much energy we
lose from plant to plug (youtube).
How is the Electricity used by the Consumer?
Step-Up Transformer is a transformer that
increases voltage from primary to secondary. There are more secondary
winding turns than primary winding turns.
Step-Down
Transformer is a transformer that
decreases voltage from primary to secondary, like a Pole-mounted
distribution transformer with center-tapped secondary winding used to
provide "split-phase" power for residential and light commercial service,
which in North America is typically rated
120/240 V.
Transformer Saturation is a condition where
a transformer's core is fully magnetized and is producing maximum magnetic
flux. This typically happens when the transformer is not large enough for
the application. Core
saturation can also increase the temperature of the transformer.
Transformer
is a static electrical device that
transfers electrical energy between two
or more circuits through
electromagnetic induction. A varying current in
one coil of the transformer produces a varying magnetic field, which in
turn induces a varying electromotive force (emf) or "voltage" in a second
coil. Power can be transferred between the two coils, without a metallic
connection between the two circuits.
Faraday's Law of Induction discovered
in 1831 described this effect. Transformers are used to
increase or
decrease the alternating voltages in electric power applications. Since
the invention of the first constant-potential transformer in 1885,
transformers have become essential for the transmission, distribution, and
utilization of alternating current electrical energy. A wide range of
transformer designs is encountered in
electronic and electric power
applications. Transformers range in size from RF transformers less than a
cubic centimeter in volume to units interconnecting the power grid weighing hundreds of tons.
Energy Transformation -
Converters -
Power Supply -
Voltage Regulation
Autotransformer is an electrical transformer with only one winding. In
an autotransformer, portions of the same winding act as both the primary
winding and secondary winding sides of the transformer. In contrast, an
ordinary transformer has separate primary and secondary windings which are
not connected to each other. The autotransformer winding has at least
three taps where electrical connections are made. Since part of the
winding does "double duty", autotransformers have the advantages of often
being smaller, lighter, and cheaper than typical dual-winding
transformers, but the disadvantage of not providing electrical isolation
between primary and secondary circuits. Other advantages of
autotransformers include lower leakage reactance, lower losses, lower
excitation current, and increased VA rating for a given size and mass.
Electrical
Substation is a part of an electrical generation, transmission, and
distribution system. Substations transform voltage from high to low, or
the reverse, or perform any of several other important functions. Between
the generating station and consumer, electric power may flow through
several substations at different voltage levels. A substation may include
transformers to change voltage levels between high transmission voltages
and lower distribution voltages, or at the interconnection of two
different transmission voltages.
Voltages are generally in
the range 100–240 V (always expressed as root-mean-square voltage).
The two commonly used frequencies are 50 Hz and 60 Hz. Single-phase or
three-phase power is most commonly used today, although two-phase systems
were used early in the 20th century. Foreign enclaves, such as large
industrial plants or overseas military bases, may have a different
standard voltage or frequency from the surrounding areas. Some city areas
may use standards different from that of the surrounding countryside (e.g.
in Libya). Regions in an effective state of anarchy may have no central
electrical authority, with electric power provided by incompatible private
sources. Many other combinations of voltage and utility frequency were
formerly used, with frequencies between 25 Hz and 133 Hz and voltages from
100 V to 250 V. Direct current (DC) has been almost completely displaced
by alternating current (AC) in public power systems, but DC was used
especially in some city areas to the end of the 20th century. The modern
combinations of 230 V/50 Hz and 120 V/60 Hz, listed in IEC 60038, did not
apply in the first few decades of the 20th century and are still not
universal. Industrial plants with three-phase power will have different,
higher voltages installed for large equipment (and different sockets and
plugs), but the common voltages listed here would still be found for
lighting and portable equipment.
Fault Current Limiter is a device which limits the
prospective
fault current when a
fault occurs (e.g. in a power
transmission network) without complete disconnection. The term includes
superconducting, solid-state and inductive devices.
Electromechanical Relays are switches that
typically are used to control high power electrical devices.
Electromechanical relays are used in many of today's electrical machines
when it is vital to control a circuit, either with a low power signal or
when multiple circuits must be controlled by one single signal.
Relay consists of a set
of input terminals for a single or multiple control signals, and a set of
operating contact terminals. The switch may have any number of contacts in
multiple contact forms, such as make contacts, break contacts, or
combinations thereof.
DC Block are coaxial
components that prevent the flow of audio and direct current (DC)
frequencies while offering minimum interference to RF signals. There are
three basic forms of DC blocks. “Inner only” models have a capacitor in
series with the center conductor, “outer only” models have a capacitor in
series with the outer conductor, and “inner/outer” models have capacitors
in series with both the inner and outer conductors. The insulation
material on the outer models is non-conductive. Applications include
ground loop elimination, signal source modulation leakage suppression,
system signal-to-noise ratio improvement, test setup isolation and other
situations where undesired DC or audio current flows in the system. The
Capacitor connected between two stages of a Cascaded Amplifier is called a
Blocking Capacitor or a Coupling Capacitor as it blocks DC and allows only
AC signal to pass from the First Stage to the next stage.
Choke is an inductor used to block higher-frequency while passing
direct current (DC) and lower-frequencies of alternating current (AC) in
an electrical circuit. A choke usually consists of a coil of insulated
wire often wound on a magnetic core, although some consist of a
doughnut-shaped "bead" of ferrite material strung on a wire. The choke's
impedance increases with frequency. Its low electrical resistance passes
both AC and DC with little power loss, but its reactance limits the amount
of AC passed. The name comes from blocking—"choking"—high frequencies
while passing low frequencies. It is a functional name; the name "choke"
is used if an inductor is used for blocking or decoupling higher
frequencies, but the component is simply called an "inductor" if used in
electronic filters or tuned circuits. Inductors designed for use as chokes
are usually distinguished by not having the low-loss construction (high Q
factor) required in inductors used in tuned circuits and filtering
applications.
Distributed Generation is generated or stored by a
variety of small, grid-connected devices referred to as distributed energy
resources (DER) or distributed energy resource systems.
Solar Panels work at Night because the Sun is always shining
some where in the world. So one side of the planet shares some
of its energy during the day for the other side of the planet that is in
the dark, and vise versa.
Wind
Blows at Night.
Solar
Grid Storage -
Solar Power
Analytic Research Foundations workshop for the Next
Generation Electric Grid
Peer-to-Peer Energy Transaction & Distributed Energy
Resource Control
LO3 Energy and ConsenSys
Brooklyn
Micro-Grid
Harmonics in electrical power are the voltages and currents in an
electric power system that are a result of non-linear electric loads. Harmonic
frequencies in the power grid are a frequent cause of power quality
problems. Harmonics in power systems result in increased heating in the
equipment and conductors, misfiring in variable speed drives, and torque
pulsations in motors. Reduction of harmonics is considered desirable.
Principles of Grid Generation
is a small-sized geometrical shape that covers the physical domain, whose
objective is to identify the discrete volumes or elements where
conservation laws can be applied. Grid generation is the first process
involved in computing numerical solutions to the equations that describe a
physical process. The result of the solution depends upon the quality of
grid. A well-constructed grid can improve the quality of solution whereas,
deviations from the numerical solution can be observed with poorly
constructed grid. Techniques for creating the cell forms the basis of grid
generation. Various methods to generate grids are discussed below.
Ancillary Services Electric Power defines the
ancillary services as: "those services necessary to support the
transmission of electric power from seller to purchaser given the
obligations of control areas and transmitting utilities within those
control areas to maintain reliable operations of the interconnected
transmission system."
Man-Shaped Electrical Towers Titled "The Land of Giants," these polygon
shapes are both eerie and functional
Grid Parity occurs when an
alternative energy source
can generate power at a levelized cost of electricity (LCOE) that is less
than or equal to the price of purchasing power from the electricity grid.
Service Drop is an overhead electrical line running from a utility
pole, to a customer's building or other premises. It is the point where
electric utilities provide power to their customers. The customer
connection to an underground distribution system is usually called a
"service lateral". Conductors of a service drop or lateral are usually
owned and maintained by the utility company, but some industrial drops are
installed and owned by the customer. At the customer's premises, the wires
usually enter the building through a weatherhead that protects against
entry of rain and snow, and drop down through conduit to an electric meter
which measures and records the power used for billing purposes, then
enters the main service panel. The utility's portion of the system ends,
and the customer's wiring begins, at the output socket of the electric
meter. The service panel will contain a "main" fuse or circuit breaker,
which controls all of the electric current entering the building at once,
and a number of smaller fuses/breakers, which protect individual branch
circuits. There is always provision for all power to be cut off by
operating either a single switch or small number of switches (maximum of
six in the United States, for example); when circuit breakers are used
this is provided by the
main circuit breaker.
Incoming Service Wire. A homeowner’s responsibility for the incoming
electric service usually starts where the utility companies wires are
attached to the home. In the case where your meter is on a pole away from
the building, your responsibility will usually start where the service
wires are attached at the top of the pole. The position of your electric
meter has nothing to do with where your responsibility starts.
Short Circuits occur when a live wire comes
into direct contact with a neutral wire. If this happens, a fuse generally
blows, cutting the electrical supply before an electrical connection
melts. However, if the fuse does not blow and electricity continues to
flow, the
wires will get hot. The
heat will then melt the outer plastic coating,
which may
cause it to catch on fire. When
you turn on an electrical appliance, current is drawn through the wires
and connections. The more energy the appliance requires, the more current
that flows. If the
flow of
current exceeds the wire's specifications, the internal wire starts to
heat up. Continued use of the appliance exacerbates the situation and may
eventually cause the outer plastic coating and connections to melt.
Electricity flowing through a wire creates a magnetic electric field
current. You generally cannot see, hear or feel it. However, you may have
noticed a
buzzing sound that comes from the large overhead electricity
cables. The electrical field current makes this sound. A coil of wire,
such as an extension lead, increases the magnetic electrical field
current. The result is the production of heat. The wire then gets hotter,
making the outer plastic coating soft (and therefore weaker), which
strengthens the electrical field, eventually causing the coating to melt.
The NFPA notes that
electrical fires often occur due to one small incident leading to
another, which results in a combination of things that cause electrical
connection melting.
Overheating of wire caused by one or more of the
previous examples can start the process. Once a wire gets hot, the heat
can travel along the wire until it gets to an electrical connection, such
as a plug in a wall socket. Once the connections in the plug get too hot,
they melt and expose bare wires. These ultimately cause a short circuit,
which produces more heat and melts the plug connection.
The National Electrical Code in partnership with the
National Fire Protection Association
or NFPA, monitors the safety of electrical wiring in the United States.
Electricity is essential to everyday life, but wiring faults can
cause
wires to melt,
resulting in fires.
Hydro Water Energy - Dams
Hydro Electricity the production of electrical power
through the use of the
gravitational force of falling or flowing water.
In 2015 hydropower generated 16.6% of the world's total electricity and
70% of all renewable electricity, and was expected to increase about 3.1%
each year for the next 25 years. Hydropower is produced in 150 countries,
with the Asia-Pacific region generating 33 percent of global hydropower in
2013. China is the largest hydroelectricity producer, with 920 TWh of
production in 2013, representing 16.9 percent of domestic electricity use.
Hydro Power.
Dam
is a barrier that stops or restricts the
flow of water or underground
streams. Reservoirs created by dams not only suppress floods but also
provide water for activities such as
irrigation, human consumption,
industrial use, aquaculture, and navigability. Hydropower is often used in
conjunction with dams to generate electricity. A dam can also be used to
collect water or for storage of water which can be evenly distributed
between locations. Dams generally serve the primary purpose of retaining
water, while other structures such as floodgates or levees (also known as
dikes) are used to manage or prevent water flow into specific land
regions.
Geotechnical Engineering.
Weir is a
barrier across the horizontal width of a river that
alters the flow characteristics of water
and usually results in a change in the height of the river level. There
are many designs of weir, but commonly water flows freely over the top of
the weir crest before cascading down to a lower level.
What is a Weir? -
Practical Engineering Video Feb 25, 2019.
Diversion Dam is a dam that diverts all or a portion of the flow of a
river from its natural course. Diversion dams do not generally impound
water in a reservoir; instead, the water is diverted into an artificial
water course or canal, which may be used for irrigation or return to the
river after passing through hydroelectric generators, flow into a
different river or be itself dammed forming an onground or groundwater
reservoir or a storm drain.
Dam Nation (2014) (film)
America has 75,000 Dams or
87,000?
Nearly 3,000 dams across the U.S. predate the 20th century. 65%
of dams in the country are privately owned.
AI helps reduce Amazon Hydropower Dams' carbon footprint. A team of
scientists has developed a computational model that uses artificial
intelligence to find sites for hydropower dams in order to help reduce
greenhouse gas emissions. When areas are flooded to build dams,
decomposing plant matter produces methane, a more destructive greenhouse
gas than carbon dioxide. Depending on the location and other factors, the
carbon emissions from dam construction can vary from lowest to highest by
more than two orders of magnitude. The analysis found that dams built at
high elevations tend to lower greenhouse gas emissions per unit of power
output than dams in the lowlands -- partly because less land needs to be
flooded in steeper environments. There are currently around 150 hydropower
dams and another 350 proposed for the Amazon basin, which encompasses
parts of Brazil, Ecuador, Peru and Bolivia.
Dam Safety -
PDF -
Water Management
After Largest Dam
Removal in U.S. History on Washington's Elwha River in 2011, This River Is
Now Thriving Again | National Geographic. (youtube).
Micro Hydro is a type of hydroelectric power that typically
produces from 5 kW to 100 kW of electricity using the natural flow of
water. Installations below 5 kW are called
pico
hydro. These installations can provide power to an isolated home or small
community, or are sometimes connected to electric power networks,
particularly where net metering is offered. There are many of these
installations around the world, particularly in developing nations as they
can provide an economical source of energy without the purchase of fuel.
Micro hydro systems complement solar PV power systems because in many
areas, water flow, and thus available hydro power, is highest in the
winter when solar energy is at a minimum. Micro hydro is frequently
accomplished with a pelton wheel for high head, low flow water supply. The
installation is often just a small dammed pool, at the top of a waterfall,
with several hundred feet of pipe leading to a small generator housing. In
low head sites, generally water wheels and Archimedes screws are used.
The Micro-Hydro Plant -
Power Spout Hydro
Generator.
Micro Hydro Diversion Screens -
Coanoa Screen
Transforming modern power production through Micro-Scale
Hydropower.
Turbulent Hydro Power
high level of efficiency on rivers and canals with a low height difference
thanks to a new technology based on the
vortex
principle. It generates electricity in the form of a single turbine or
a network of multiple turbines. Fish friendly, Long operating life, No
flood risk, Low maintenance, Turn key and mobile Remote monitoring.
Small Hydro
is the development of hydroelectric power on a scale suitable
for local community and industry, or to contribute to distributed
generation in a regional electricity grid. The definition of a small hydro
project varies, but a generating capacity of 1 to 20 megawatts (MW) is
common. In contrast many hydroelectric projects are of enormous size, such
as the generating plant at the Three Gorges Dam at 22,500 megawatts or the
vast multiple projects of the Tennessee Valley Authority. Small hydro
projects may be built in isolated areas that would be uneconomic to serve
from a national electricity grid, or in areas where a national grid does
not exist.
Micro-Grid (smart grids).
Plastic
bottle water wheel generator experiment (youtube)
Moriah Hydro Corp. to develop the unique, 260-MW Mineville pumped-storage
project to be located completely underground in an abandoned mine
complex in New York, west of Lake Champlain. Engineers would drain roughly
half of the water from the shafts and pump the remainder into an upper
chamber. The water would then be released into a lower chamber, powering
turbines and creating electricity. The turbines would be reversed to pump
the water back up to repeat the process. the pumped water is
considered stored energy, to be released strategically when power is
needed.
Pumped Storage Hydroelectricity is a type of hydroelectric
energy storage used by electric power systems for load balancing. The
method stores energy in the form of gravitational potential energy of
water, pumped from a lower elevation reservoir to a higher elevation.
Low-cost surplus off-peak electric power is typically used to run the
pumps. During periods of high electrical demand, the stored water is
released through turbines to produce electric power. Although the losses
of the pumping process makes the plant a net consumer of energy overall,
the system increases
revenue by selling more
electricity during periods of peak demand.
Unsustainable unless it's a natural process.
Time Shift Energy involves storing energy during low price times,
and discharging during high price times.
Energy Storage.
Water
Turbine Generators
-
Water
TurbineA single
PowerSpout
at a site good enough to generate 1 kW can produce enough electricity for
a typical house for a year (8,000 kWh/yr).
Low Head Hydro Power applications use tidal flows or rivers with a
head of 20 metres (66 ft) or less to produce energy. These applications
may not need to dam or retain water to create hydraulic head. Using the
drop in a river or tidal flows to create electricity may provide a
renewable energy source that will have a minimal impact on the
environment.
Turgo Turbine is an impulse
water turbine designed for medium head applications. Operational
Turgo Turbines
achieve efficiencies of about 87%. In factory and lab tests Turgo
Turbines perform with efficiencies of up to 90%. It works with net heads
between 15 and 300 m.
Hydraulic Head is a measurement of the total mechanical energy per
weight of the groundwater flow system. In other words, it is the fluid
potential for flow through porous media. It is predominantly comprised of
pressure and elevation heads.
Piezometric head is a specific measurement of liquid
pressure above a geodetic datum. It is usually measured as a liquid
surface elevation, expressed in units of length, at the entrance (or
bottom) of a piezometer. In an aquifer, it can be calculated from the
depth to water in a piezometric well (a specialized water well), and given
information of the piezometer's elevation and screen depth. Hydraulic head
can similarly be measured in a column of water using a standpipe
piezometer by measuring the height of the water surface in the tube
relative to a common datum. The hydraulic head can be used to determine a
hydraulic gradient between two or more points.
Pressure
is the
force applied perpendicular to the surface of an object per unit
area over which that
force is distributed. Gauge pressure
is the pressure relative to the ambient pressure.
Pressure
Measurement are instruments used to measure and display pressure in an
integral unit are called pressure gauges or vacuum gauges. A manometer is
a good example as it uses a column of liquid to both measure and indicate
pressure. Likewise the widely used Bourdon gauge is a mechanical device
which both measures and indicates, and is probably the best known type of
gauge. A vacuum gauge is an absolute pressure gauge used to measure the
pressures lower than the ambient atmospheric pressure. Other methods of
pressure measurement involve sensors which can transmit the pressure
reading to a remote indicator or control system like
telemetry, which is an automated communications process by which
measurements and other data are collected at remote or inaccessible points
and transmitted to receiving equipment for
monitoring.
Energy
Harvested from Evaporation could Power much of US. US lakes and
reservoirs could generate 325 gigawatts of power, nearly 70 percent of
what the United States currently produces.
About 50% of the solar energy absorbed at the Earth’s surface drives
Evaporation, fueling the water cycle that affects various renewable
energy resources, such as wind and hydropower.
River Engineering is the process of planned human intervention in the
course, characteristics, or flow of a river with the intention of
producing some defined benefit. People have intervened in the natural
course and behaviour of rivers since before recorded history—to manage the
water resources, to protect against
flooding, or to make passage along or across rivers easier. From Roman
times, rivers have been used as a source of hydropower. From the late 20th
century, river engineering has had environmental concerns broader than
immediate human benefit and some river
engineering projects have been concerned exclusively with the
restoration or
protection of natural characteristics and habitats. Hydromodification
encompasses the systematic response to alterations to riverine and
non-riverine water bodies such as coastal waters (estuaries and bays) and
lakes. The U.S. Environmental Protection Agency (EPA) has defined
hydromodification as the "alteration of the hydrologic characteristics of
coastal and non-coastal waters, which in turn could cause degradation of
water resources." River engineering has often resulted in unintended
systematic responses. The river engineering discipline now strives to
repair hydromodified degradations and account for potential systematic
response to planned alterations by considering fluvial geomorphology.
Fluvial geomorphology is the study of how rivers change their form over
time. Fluvial geomorphology is the cumulation of a number of sciences
including open channel hydraulics, sediment transport,
hydrology, physical geology, and riparian
ecology. River engineering attempts to understand fluvial geomorphology,
implement a physical alteration, and maintain public safety.
Infrastructure.
Unintended Consequences of Dams and Reservoirs. An international team
of drought scientists show that while many dams and reservoirs are built,
or expanded, to alleviate droughts and water shortages, they can
paradoxically contribute to making them worse. The supply-demand cycle
describes cases where increasing water supply leads to higher water
demand, which can quickly offset the initial benefits of reservoirs. These
cycles can be seen as a rebound effect, also known in environmental
economics as Jevon's paradox: as more water is available, water
consumption tends to increase. This can result in a vicious cycle: a new
water shortage can be addressed by further expansion of reservoir storage
to increase (again) water availability, which enables more water
consumption, until the next shortage... As such, the supply-demand cycle
can trigger an accelerating spiral towards unsustainable exploitation of
water resources and environmental degradation. The reservoir effect
describes cases where over-reliance on reservoirs increases the potential
damage caused by drought and water shortage. The expansion of reservoirs
often reduces incentives for preparedness and adaptive actions, thus
increasing the negative impacts of water shortage. Moreover, extended
periods of abundant water supply, supported by reservoirs, can generate
higher dependence on water resources, which in turn increases social
vulnerability and economic damage when water shortage eventually occurs.
Ocean Wave Current Energy
Wave Power
is the transport of energy by wind waves, and the capture of that energy
to do useful work – for example, electricity generation, water
desalination, or the pumping of water (into reservoirs). A machine able to
exploit wave power is generally known as a wave energy converter (WEC).
Wave power is distinct from the diurnal flux of tidal power and the steady
gyre of ocean currents. Wave-power generation is not currently a widely
employed commercial technology, although there have been attempts to use
it since at least 1890. In 2008, the first experimental wave farm was
opened in Portugal, at the Aguçadoura Wave Park.
Tidal Stream Generator is a machine that extracts energy
from moving masses of water, in particular tides, although the term is
often used in reference to machines designed to extract energy from run of
river or tidal estuarine sites. Certain types of these machines function
very much like underwater wind turbines, and are thus often referred to as
tidal turbines. They were first conceived in the 1970s during the oil
crisis. Tidal stream generators are the cheapest and the least
ecologically damaging among the three main forms of tidal power
generation.
Oscillating Water Column are a type of Wave Energy Converter
(WEC) that harness energy from the oscillation of the seawater
inside a chamber or hollow caused by the action of waves. OWCs have shown
promise as a renewable energy source with low environmental impact.
Because of this, multiple companies have been working to design
increasingly efficient OWC models.
Underwater Turbines
Tidal Lagoon Power Plant
Wind and Current Combo
Sea
Generation
Open Hydro
CETO
Wave-Energy &
Desalinates
Water
Carnegie
Wave
Perth Project
Bombora Wavepower
Bunbury Wave Energy Trial
Unique
Hydropower System uses
Gravity Fed Water Pipes to
Produce Low Cost Electricity
Kymogen
OWC Generator (image)
Wave Research
LaboratoryMarine
and Hydrokinetic Technology Ocean Renewable Wave Energy
Northwest
National Marine Renewable Energy Center
Okinawa Institute of Science and Technology energy-harvesting turbines
near tetrapods, which are concrete structures placed along the shore to
weaken the force of incoming waves and prevent erosion.
Robotics
principles help Sandia wave energy converters better absorb power of ocean
waves.
Between
Eb and Flow is 20 minutes.
Ebb is the outgoing phase, when the tide drains away from the shore; and
the flow is the incoming phase when water rises again.
Sustainable Future Powered by Sea. Five-blade turbine are made of a
soft material and they rotate on their axis when influenced by ocean
waves. The axis is attached to a permanent magnet electric generator,
which is the part of the turbine that transforms the ocean wave energy
into usable electricity. The ceramic mechanical seal protects the
electrical components inside of the body from any saltwater leakage. This
design allows the turbine to function for ten years before it need
replacing. Submerged turbines anchored to the sea floor through mooring
cables that convert the kinetic energy of sustained natural currents in
the Kuroshio into usable electricity, which is then delivered by cables to
the land. 1% of the seashore of mainland japan can [generate] about 10
gigawats [of energy], which is equivalent to 10 nuclear power plants.
The Wave Energy Converter (WEC) System.
New technology could generate 40% of the world’s electricity where
seawater and freshwater meet. Researchers at Penn State University
have developed a new technology that they believe will be capable of
producing large amounts of energy – possibly more than one-third the
amount needed to meet global energy demands – in coastal areas where
seawater and freshwater meet. “The goal of this technology,” assistant
environmental engineering professor Christopher Gorski explained earlier
this month in a statement, “is to generate electricity from where the
rivers meet the ocean. It's based on the difference in the salt
concentrations between the two water sources.” According to Gorski and his
colleagues, that difference in salinity levels could potentially create
enough energy to meet nearly 40 percent of the world’s electricity needs.
However, methods that experts currently use to harness that power have
failed to fully capitalize on that potential.
Geothermal Energy
Geothermal Energy is thermal energy generated and stored in
the Earth.
Thermal Energy is the energy that determines the temperature of
matter.
Geothermal
Energy -
Thermal Electric Energy.
Geothermal Electricity
is power generated by geothermal energy. Technologies in use
include dry steam power stations, flash steam power stations and binary
cycle power stations. Geothermal electricity generation is currently used
in 24 countries, while geothermal heating is in use in 70 countries.
Geothermal.
Geophysics is the physical processes and physical properties
of the Earth and its surrounding space environment, and the use of
quantitative methods for their analysis.
Enhanced Geothermal System generates geothermal electricity
without the need for natural convective hydrothermal resources.
Binary Cycle is a
type of geothermal power plant that allows cooler geothermal reservoirs to
be used than is necessary for dry steam and flash
steam
plants.
Flash Steam Plants are the most common type of geothermal power
generation plants in operation in the world today. Fluid at temperatures
greater than 360°F (182°C) is pumped under high pressure into a tank at
the surface held at a much lower pressure, causing some of the fluid to
rapidly vaporize, or "flash." The vapor then drives a turbine, which
drives a generator. If any liquid remains in the tank, it can be flashed
again in a second tank to extract even more energy.
Flash Evaporation is the partial
vapor that occurs when a saturated liquid stream undergoes a reduction
in pressure by passing through a throttling valve or other throttling
device. This process is one of the simplest unit operations. If the
throttling valve or device is located at the entry into a pressure vessel
so that the flash
evaporation occurs
within the vessel, then the vessel is often referred to as a flash drum.
Geothermal Heating & Cooling
Geothermal energy utilizes the relatively
stable
temperature of the earth that is buried and stored a few feet under
its surface. Regardless of the season or the degree of the outside
temperature, the temperature of the earth a few feet underground remains
constant. Trenches are normally 6 to
10 feet
deep (depending where you live) to have a constant
50 °F temperature) and up to
400 feet long, depending on how many pipes are in a
trench. One of the advantages of a horizontal loop system is being able to
lay the trenches according to the shape of the land. As a rule of thumb,
500-600 feet of pipe is required per ton of system capacity. When it's 0
°F, but the temperature of the ground 10 feet down can a balmy 50 °F. By
putting pipes in the ground, we can exchange the heat from the ground to
the house. When it's 90 °F outside, the ground is a cool 50 °F. So you can
now move heat from the house into the ground.
Most of the geothermal loop systems installed are closed loops.
Soil
Properties Temperature Experiment -
PSU.edu
Geothermal Heating & Cooling (youtube) - Payback time
for this investment is about 6 years. It's like buying your energy needs
upfront for 6 years, and then you get to live the rest of your life with a
very low energy bill that you control.
Passive Heating -
Air Conditioning (passive)
Geothermal Heat Pump is a central heating and/or cooling
system that transfers heat to or from the ground. It uses the earth as a
heat source (in the winter) or a heat sink (in the summer). This design
takes advantage of the moderate temperatures in the ground to boost
efficiency and reduce the operational costs of heating and cooling
systems, and may be combined with solar heating to form a geosolar system
with even greater efficiency. They are also known by other names,
including geoexchange, earth-coupled, earth energy systems.
Ground-Source Heat Pump Systems
Heat
Pump is a device that transfers heat energy from a source of heat to a
destination called a "heat sink". Heat pumps are designed to move thermal
energy in the opposite direction of spontaneous heat transfer by absorbing
heat from a cold space and releasing it to a warmer one. A heat pump uses
a small amount of external power to accomplish the work of transferring
energy from the heat source to the heat sink.
Geothermal Heating even cold ground contains heat, below 6 metres (
20
ft) the undisturbed ground temperature is consistently at the Mean Annual
Air Temperature and it may be extracted with a heat pump. Depending
on latitude, the temperature beneath the upper 6 metres (20
ft) of Earth's surface maintains a nearly constant temperature
between 10 and 16 °C (
50 and 60 °F), if the temperature is undisturbed by
the presence of a heat pump.
Desuperheater is a secondary heat exchanger
that transfers heat from the earth in the winter, and from your home in
the summer, into your domestic hot water tank. The desuperheater is part
of the geothermal heat pump's domestic hot water generating system (HWG).
Thermal Efficiency is a dimensionless performance measure of a device
that uses thermal energy, such as an internal combustion engine, a steam
turbine or a steam engine, a boiler, furnace, or a refrigerator for
example. For a heat engine, thermal efficiency is the fraction of the
energy added by heat (primary energy) that is converted to net work output
(secondary energy). In the case of a refrigeration or heat pump cycle,
thermal efficiency is the ratio of net heat output for heating, or removal
for cooling, to energy input (the coefficient of performance).
Thermal Battery is a physical structure used for the purpose of
storing and releasing thermal energy—see also thermal energy storage. Such
a thermal battery (a.k.a. TBat) allows energy available at one time to be
temporarily stored and then released at another time. The basic principles
involved in a thermal battery occur at the atomic level of matter, with
energy being added to or taken from either a solid mass or a liquid
volume which causes the substance's temperature to change. Some thermal
batteries also involve causing a substance to transition thermally through
a phase transition which causes even more energy to be stored and released
due to the delta enthalpy of fusion or delta enthalpy of
vaporization.
A new way to store thermal energy a kind of thermal battery
Phase-Change Material is a substance with a high heat of fusion which,
melting and solidifying at a certain temperature, is capable of storing
and releasing large amounts of energy. Heat is absorbed or released when
the material changes from solid to liquid and vice versa; thus, PCMs are
classified as latent heat storage (LHS) units.
GeoExchange Heating
and Cooling System (open loop and closed loop) (youtube)
Geothermal
Heating (youtube)
What is
Geothermal? (youtube)
Geoexchange
Water
Furnace
Smart
Energy Now
Hellisheidi is now a zero-emissions plant that turns a greenhouse gas
to stone.
Hellisheidi Geothermal Power Plant, Iceland’s largest, just outside
the capital Reykjavik. Since 2014, the plant has been extracting heat from
underground,
capturing
the carbon dioxide released in the process, mixing it with water, and
injecting it back down beneath the earth, about 700 meters (2,300 ft)
deep. The carbon dioxide in the water reacts with the minerals at that
depth to form rock, where it stays trapped.
Thermal Banking
Seasonal Thermal Energy Storage is the storage of heat or cold for
periods of up to several months. The thermal energy can be collected
whenever it is available and be used whenever needed, such as in the
opposing season. For example, heat from solar collectors or waste heat
from air conditioning equipment can be gathered in hot months for space
heating use when needed, including during winter months. Waste heat from
industrial process can similarly be stored and be used much later. Or the
natural cold of winter air can be stored for summertime air conditioning.
Renewable
Solar Fuel
Ocean Thermal
Electric Conversion (youtube)
Ocean Thermal Energy Conversion uses the temperature
difference between cooler deep and warmer shallow or surface seawaters to
run a heat engine and produce useful work, usually in the form of
electricity. OTEC is a base load electricity generation system.
Engineering Geology is the study for the purpose of assuring that the
geological factors regarding the location, design, construction, operation
and maintenance of engineering works are recognized and accounted for.
Engineering geologists provide geological and geotechnical
recommendations, analysis, and design associated with human development
and various types of structures. The realm of the engineering geologist is
essentially in the area of earth-structure interactions, or investigation
of how the earth or earth processes impact human made structures and human
activities.
Geo Engineering (wiki)
Geotechnical Engineering is the branch of civil engineering concerned
with the engineering behavior of earth materials. Geotechnical engineering
is important in civil engineering, but also has applications in military,
mining, petroleum and other engineering disciplines that are concerned
with construction occurring on the surface or within the ground.
Geotechnical engineering uses principles of soil mechanics and rock
mechanics to investigate subsurface conditions and materials; determine
the relevant physical/mechanical and chemical properties of these
materials; evaluate stability of natural slopes and man-made soil
deposits; assess risks posed by site conditions; design earthworks and
structure foundations; and monitor site conditions, earthwork and
foundation construction.
Geo-Professions (wiki).
Energy from Solar Heat
Storing compressed air in sealed tunnels and mines could be a way of
storing energy in the future. Compress air, which is stored in caverns
in solid bedrock. When air is compressed, it heats up, so a separate
underground heat store stockpiles the heat generated by the compression
process. When the energy is needed, the air is released through a gas
turbine, which generates electricity.
Thorium Reactor Nuclear Energy
Improved Safer Method of Nuclear Power. There is an Improved Method for
Nuclear Energy that does not create
bombs or
Radio Active waste. This method was introduced years ago but
was abandoned because criminals and
war mongers wanted to make nuclear
bombs.
Integral Fast Reactor is a design for a nuclear reactor
using fast neutrons and no neutron moderator (a "fast" reactor). IFR is
distinguished by a nuclear fuel cycle that uses reprocessing via
electrorefining at the reactor site.
S-PRISM is the name of a nuclear power plant design by GE
Hitachi Nuclear Energy (GEH). The S-PRISM represents GEH's Generation IV
reactor solution to closing the nuclear fuel cycle and is also part of its
Advanced Recycling Center (ARC) proposition to U.S. Congress to deal with
nuclear waste. S-PRISM is a commercial implementation of the Integral Fast
Reactor developed by Argonne National Laboratory between 1984 and 1994. It
is a sodium-cooled fast breeder reactor, based on the Experimental Breeder
Reactor II (EBR-II) design, scaled up by a factor of ten. The design
utilizes reactor modules, each having a power output of 311 MWe, to enable
factory fabrication at low cost. In an identical fashion to the EBR-II
that it is based on, the reactor would transition to a much lower power
level whenever temperatures rise significantly, moreover the reactor
vessel modules are pool type, as opposed to loop type, with the pool
conferring substantial thermal inertia and the final key safety feature
includes a "RVACS", which is a passive reactor vessel air cooling system
to remove decay heat. These safety systems are passive and therefore
always operate and are to prevent core damage when no other means of heat
removal are available.
Liquid Fluoride Thorium Reactor is a type of molten salt
reactor. LFTRs use the thorium fuel cycle with a fluoride-based, molten,
liquid salt for fuel. Molten-salt-fueled reactors (MSRs) supply the
nuclear fuel in the form of a molten salt mixture. They should not be
confused with molten salt-cooled high temperature reactors (fluoride
high-temperature reactors, FHRs) that use a solid fuel. Molten salt
reactors, as a class, include both burners and breeders in fast or thermal
spectra, using fluoride or chloride salt-based fuels and a range of
fissile or fertile consumables. LFTRs are defined by the use of fluoride
fuel salts and the breeding of thorium into uranium-233 in the thermal
spectrum.
Kirk Sorensen Nuclear Fuel
(video) -
Thorium Remix 2011
(youtube)
"NASA" -
THORIUM REMIX 2016 (2 Hrs. 9 Mins.) -
Taylor's Nuke Site -
Video
Molten Salt Reactor
is a class of generation IV nuclear fission reactor in which the
primary nuclear reactor coolant, or even the fuel itself, is a molten salt
mixture. MSRs can run at higher temperatures than water-cooled reactors
for a higher thermodynamic efficiency, while staying at low vapour
pressure. The nuclear fuel may be solid or dissolved in the coolant. In
many designs the nuclear fuel dissolved in the coolant is uranium
tetrafluoride (UF4). The fluid becomes critical in a graphite core that
serves as the moderator. Some solid-fuel designs propose ceramic fuel
dispersed in a graphite matrix, with the molten salt providing low
pressure, high temperature cooling. The salts are much more efficient than
compressed helium (another potential coolant in Generation IV reactor
designs) at removing heat from the core, reducing the need for pumping and
piping and reducing the core size. The concept was established in the
1950s. The early Aircraft Reactor Experiment (1954) was primarily
motivated by the small size that the design could provide, while the
Molten-Salt Reactor Experiment (1965–1969) was a prototype for a thorium
fuel cycle breeder reactor nuclear power plant. The increased research
into Generation IV reactor designs included a renewed interest in the
technology.
Thorium Fuel Cycle is a nuclear fuel cycle that uses an
isotope of thorium, 232Th, as the fertile material. In the reactor, 232Th
is transmuted into the fissile artificial uranium isotope 233U which is
the nuclear fuel. Unlike natural uranium, natural thorium contains only
trace amounts of fissile material (such as 231Th), which are insufficient
to initiate a nuclear chain reaction. Additional fissile material or
another neutron source is necessary to initiate the fuel cycle. In a
thorium-fuelled reactor, 232Th absorbs neutrons to produce 233U. This
parallels the process in uranium breeder reactors whereby fertile 238U
absorbs neutrons to form fissile 239Pu. Depending on the design of the
reactor and fuel cycle, the generated 233U either fissions in situ or is
chemically separated from the used nuclear fuel and formed into new
nuclear fuel. The thorium fuel cycle has several potential advantages over
a uranium fuel cycle, including thorium's greater abundance, superior
physical and nuclear properties, reduced plutonium and actinide
production, and better resistance to nuclear weapons proliferation when
used in a traditional light water reactor though not in a molten salt
reactor.
Breeder Reactor is a nuclear reactor that generates more
fissile material than it consumes. These devices achieve this because
their neutron economy is high enough to breed more fissile fuel than they
use from fertile material, such as uranium-238 or thorium-232. Breeders
were at first found attractive because their fuel economy was better than
light water reactors, but interest declined after the 1960s as more
uranium reserves were found, and new methods of uranium enrichment reduced
fuel costs.
Thorium is a chemical element with symbol Th and atomic
number 90. Thorium metal is silvery and tarnishes black when exposed to
air, forming the dioxide; it is moderately hard, malleable, and has a high
melting point. Thorium is an electropositive actinide, whose chemistry is
dominated by the +4 oxidation state; it is quite reactive, prone to
ignition on air when properly divided.
Rare Earth Elements
-
Deuterium (wiki) -
Energy from Thorium.
One pound of
Thorium produces as
much power as 300 lbs. of
Uranium
or 3.5 million lbs. of
Coal.
Megatons to Megawatts Program (completed in December 2013).
Micro Nuclear Reactor -
Travelling Wave Reactor
Small Modular Reactor are a type of nuclear fission reactor
which are
smaller than conventional reactors, and manufactured at a plant
and brought to a site to be fully constructed. Modular reactors allow for
less on-site construction, increased containment efficiency, and
heightened nuclear materials security. SMRs have been considered to be
less expensive than traditional nuclear reactors, although critics have
questioned the cost benefits when compared to solar energy, wind energy,
and natural gas. Small reactors are defined by the International Atomic
Energy Agency as those with an electricity output of less than 300 MW,
although general opinion is that anything with an output of less than 500 MWe counts as a small reactor.
Modular Nuclear -
Terra Power
-
Loop Reactor Design
Nuclear Association -
Nuclear Power
-
Radiation
Nuclear Submarine is a submarine powered by a nuclear reactor. The
performance advantages of nuclear submarines over "conventional"
(typically diesel-electric) submarines are considerable. Nuclear
propulsion, being completely independent of air, frees the submarine from
the need to surface frequently, as is necessary for conventional
submarines. The large amount of power generated by a nuclear reactor
allows nuclear submarines to operate at high speed for long periods of
time; and the long interval between refuelings grants a range virtually
unlimited, making the only limits on voyage times being imposed by such
factors as the need to restock food or other consumables. Current
generations of nuclear submarines never need to be refueled throughout
their 25-year lifespans. Conversely, the limited power stored in electric
batteries means that even the most advanced conventional submarine can
only remain submerged for a few days at slow speed, and only a few hours
at top speed, though recent advances in air-independent propulsion have
somewhat ameliorated this disadvantage. The high cost of nuclear
technology means that relatively few states have fielded nuclear
submarines. Some of the most serious nuclear and radiation accidents ever
to occur have involved Soviet nuclear submarine mishaps.
Steam Power
Steam is the
vapor into which
water is converted when heated, forming a
white mist of minute water droplets in the air. Steam is
water at boiling temperature diffused in the
atmosphere as vapor or mist.
Steam Engine
is a
heat engine that performs mechanical work
using steam as its working fluid. Steam engines are external
combustion
engines, where the working fluid is separate from the combustion products.
Non-combustion heat sources such as
solar power, nuclear power or
geothermal energy may be used. The ideal thermodynamic cycle used to
analyze this process is called the Rankine cycle. In the cycle, water is
heated and transforms into steam within a boiler operating at a high
pressure. When expanded through pistons or turbines, mechanical work is
done. The reduced-pressure steam is then condensed and pumped back into
the boiler.
Boiler is a device that
heats water by burning fuel for use in a
heating system. Sealed vessel where water is converted to steam.
Steam Turbine
is a device that extracts
thermal energy from
pressurized steam and uses
it to do mechanical work on a rotating output shaft.
PurePower GTF (image) -
Geothermal
Turbines
is a rotary mechanical device that extracts energy from a fluid flow and
converts it into useful work. The work produced by a turbine can be used
for generating electrical power when combined with a generator or
producing thrust, as in the case of jet engines. A turbine is a
turbomachine with at least one moving part called a rotor assembly, which
is a shaft or drum with blades attached. Moving fluid acts on the blades
so that they move and impart rotational energy to the rotor. Early turbine
examples are windmills and waterwheels.
Steam
Engine - How Does It Work (video)
STEAM
ENGINE made of GLASS
Built My
Model Vertical Steam Engine
Combined Gas and Steam
is the name given to marine compound powerplants comprising gas and steam
turbines, the latter being driven by steam generated using the heat from
the exhaust of the gas turbines. In this way, some of the otherwise lost
energy can be reclaimed and the specific
fuel
consumption of the plant can be decreased. Large (land-based) electric
powerplants built using this combined cycle can reach conversion
efficiencies of over 60%.
Combined Cycle is an assembly of heat
engines that work in tandem from the same source of heat, converting it
into mechanical energy, which in turn usually drives
electrical generators. The principle is that after completing its
cycle (in the first engine), the working fluid of the first
heat engine is still low enough in its
entropy that a second subsequent heat
engine may extract energy from the waste heat (energy) of the working
fluid of the first engine. By combining these multiple streams of work
upon a single mechanical shaft turning an electric generator, the overall
net efficiency of the system may be increased by 50–60%. That is, from an
overall efficiency of say 34% (in a single cycle) to possibly an overall
efficiency of 51% (in a mechanical combination of two cycles) in net
Carnot thermodynamic efficiency. This can be done because heat engines are
only able to use a portion of the energy their fuel generates (usually
less than 50%). In an ordinary (non combined cycle) heat engine the
remaining heat (e.g., hot exhaust fumes) from combustion is generally
wasted.
Photo (image).
Cooling Tower is a heat rejection device that rejects
waste heat to the atmosphere through the cooling of a water stream to a
lower temperature. Cooling towers may either use the evaporation of water
to remove process heat and cool the working fluid to near the wet-bulb air
temperature or, in the case of closed circuit dry cooling towers, rely
solely on air to cool the working fluid to near the dry-bulb air
temperature.
Engine Efficiency of thermal engines is the relationship
between the total energy contained in the fuel, and the amount of energy
used to perform useful work.
Animated Engines -
Combustion Engine Power Generation -
Engines
Otto Cycle is an idealized thermodynamic cycle that
describes the functioning of a typical spark ignition piston engine. It is
the thermodynamic cycle most commonly found in automobile engines.
Aeolipile also known as a
Hero's Engine,
is a simple, bladeless radial steam turbine which spins when the central
water container is heated. Torque is produced by steam jets exiting the
turbine, much like a tip jet or rocket engine. In the 1st century AD, Hero
of Alexandria described the device in Roman Egypt, and many sources give
him the credit for its invention. The aeolipile which Hero described is
considered to be the first recorded steam engine or reaction steam
turbine. Predating Hero's writings, a device called an aeolipile was
described in the 1st century BC by Vitruvius in his treatise De
architectura; however, it is unclear if it is the same device or a
predecessor, as he does not mention rotating parts.
Flash Evaporation is the partial vapor that occurs when a saturated
liquid stream undergoes a reduction in
pressure by
passing through a throttling valve or other throttling device. This
process is one of the simplest unit operations. If the throttling valve or
device is located at the entry into a pressure vessel so that the flash
evaporation occurs within the vessel, then the vessel is often referred to
as a flash drum. If the saturated liquid is a single-component liquid (for
example, propane or liquid ammonia), a part of the liquid immediately
"flashes" into vapor. Both the vapor and the residual liquid are cooled to
the saturation temperature of the liquid at the reduced pressure. This is
often referred to as "auto-refrigeration" and is the basis of most
conventional vapor compression
refrigeration systems. If the saturated liquid is a multi-component
liquid (for example, a mixture of propane, isobutane and normal butane),
the flashed vapor is richer in the more volatile components than is the
remaining liquid. Uncontrolled flash evaporation can result in a boiling
liquid expanding vapor explosion (BLEVE).
Thermoelectric
Thermoelectric Effect
is the direct
conversion of
temperature differences to electric
voltage and vice versa.
A thermoelectric device
creates voltage when there is a different
temperature on each side. Conversely, when a voltage is applied to it, it
creates a temperature difference. At the atomic scale, an applied
temperature gradient causes charge carriers in the material to diffuse
from the hot side to the cold side.
Solar Thermal Energy
-
Perpetual.
Thermoelectric Cooling
uses the Peltier effect to create a
heat flux between the
junction of two different types of materials.
Refrigeration.
Peltier Effect is the presence of heating or cooling at an electrified
junction of two different
conductors.
Seebeck Coefficient of a material is a measure of the magnitude of an
induced thermoelectric voltage in response to a temperature difference
across that material, as induced by the
Seebeck effect. The SI unit of the Seebeck coefficient is volts per kelvin (V/K), although it is more often
given in microvolts per kelvin (μV/K).
Thermoelectric Material
Thermoelectric Generator is a
solid state device that
converts
Heat
(temperature differences) directly into electrical energy through a
phenomenon called the Seebeck effect (a form of thermoelectric effect
phenomenon in which a temperature difference between two dissimilar
electrical conductors or semiconductors produces a voltage difference
between the two substances).
Thermo-Magnetic Motor converts heat into kinetic energy using the
thermomagnetic effect.
Thermomagnetic Generators converts waste heat into electrical power
even at small temperature differences. Alloy film thickness and footprint
influence electrical power. Use of waste heat contributes largely to
sustainable energy supply. Scientists have now come much closer to their
goal of converting waste heat into electrical power at small temperature
differences. Electrical power per footprint of thermomagnetic generators
based on Heusler alloy films has been increased by a factor of 3.4.
Radioisotope Thermoelectric Generator is an
electrical generator that uses an array of thermocouples to
convert the
heat released by the
decay of a suitable
radioactive material
into electricity by the Seebeck effect. This generator has
no moving parts. RTGs have been used as
power sources in satellites,
space probes,
and unmanned remote facilities such as a series of lighthouses built by
the former Soviet Union inside the Arctic Circle. RTGs are usually the
most desirable power source for unmaintained situations that need a few
hundred watts (or less) of power for durations too long for fuel cells,
batteries, or generators to provide economically, and in places where
solar cells are not practical. Safe use of RTGs requires containment of
the radioisotopes long after the productive life of the unit.
Plutonium-238 is a radioactive isotope of plutonium that has a
half-life of 87.7 years. Plutonium-238 is a very powerful alpha emitter.
This makes the plutonium-238 isotope suitable for usage in radioisotope
thermoelectric generators (RTGs) and radioisotope heater units. The
density of plutonium-238 is 19.329 g/cm3.
Teg mart -
Wood Burning Stoves
Johnson Thermoelectric Energy Converter or JTEC is a type of
solid-state heat engine that uses the photodecomposition and recombination
of hydrogen in a fuel cell via an approximate Ericsson cycle. It is under
investigation as a viable alternative to conventional photovoltaic cells.
Lonnie Johnson
invented it and claims the converter exhibits an energy conversion
efficiency of as much as 60% compared to the 30% efficiency typical of the
best photovoltaic cells; however, this claim is at a theoretical level
based on comparison with a Carnot cycle and assumes a temperature gradient
of 600C. It was originally proposed for funding to the Office of Naval
Research but was refused. Johnson obtained later funding by framing the
engine as a hydrogen fuel cell. Johnson is collaborating with PARC on
development of the engine.
System draws Power from daily Temperature Swings. Technology can
harness temperature fluctuations of many kinds to produce electricity. A
new device can draw power out of the daily cycle of temperature swings to
power
remote sensors or
communications systems.
Researchers Report New Thermoelectric Material with High Power Factor
The majority of industrial energy input is lost as
Waste
Heat," the researchers wrote. "Converting some of the waste heat into
useful electrical power will lead to the reduction of fossil fuel
consumption and
CO2
emission."
New understanding of Thermoelectric Materials. Discovery leads to
promising new materials for converting waste heat to power. The
researchers already knew thermoelectric efficiency depends on the
performance of the material in both forms, known as "p-type" and "n-type"
for carrying a positive and negative charge, respectively. But most
materials either don't exist in both formulations or one type is more
efficient than the other. It is possible to build effective thermoelectric
devices using just a p-type or n-type compound, but it is easier to design
a device that contains both types; Ren said the best performance would
come when both types exhibit similar properties. The researchers
synthesized one of the predicted materials, a zirconium-cobalt-bismuth
compound, and reported a measured heat-to-electricity conversion
efficiency of 10.6% at both the cold side, about 303 Kelvin, or about 86
degrees Fahrenheit, and the hot side, about 983 Kelvin (1,310 Fahrenheit)
for both the p-type and the n-type.
Fine-tuning thermoelectric materials for cheaper renewable energy.
Materials known as
halide perovskites and
caesium tin iodide have been proposed as affordable alternatives to
existing thermoelectric materials.
Metal with Law-Breaking Property lets Electricity Flow But Not the Heat,
Vanadium Dioxide that could lead to applications in thermoelectrics,
window coatings.
Solid-State Devices that Convert Heat into Electricity Composite material yields
10 times—or higher—voltage output.
MATRIX PowerWatch Advanced thermoelectric technology Smartwatch Powered by
You - You Never Have to Charge
MATRIX PowerWatch Smartwatch Powered by You You Never Have to Charge.
Wearable Solar Thermoelectric Generator Created
Novel Circuit Design Boosts Wearable Thermoelectric Generators
Thermoelectric Power Generation at Room Temperature. The ideal TE
material combines high electrical conductivity, allowing the current to
flow, with low thermal conductivity, which prevents the temperature
gradient from evening out. The power generation performance mainly depends
on the “power factor,” which is proportional to both electrical
conductivity and a term called the
Seebeck coefficient. we combined silicon – which is common in TE
materials – with ytterbium, to create ytterbium silicide [YbSi2].
Wood-based Technology Creates Electricity from Heat.
Heat
Sink is a passive heat exchanger that transfers the
Heat generated by an
electronic or a mechanical device to a fluid medium, often air or a liquid
coolant, where it is dissipated away from the device, thereby allowing
regulation of the device's temperature at optimal levels. In computers,
heat sinks are used to
cool central processing units or graphics
processors. Heat sinks are used with high-power semiconductor devices such
as power transistors and optoelectronics such as lasers and light emitting
diodes (LEDs), where the heat dissipation ability of the component itself
is insufficient to moderate its
temperature.
Thermal Conductivity is the property of a material to conduct heat.
Heat transfer occurs at a lower rate across materials of low thermal
conductivity than across materials of high thermal conductivity.
Correspondingly, materials of high thermal conductivity are widely used in
heat sink applications and materials of low
thermal conductivity are used as thermal insulation. The thermal
conductivity of a material may depend on temperature. The reciprocal of
thermal conductivity is called thermal resistivity. Thermal conductivity
is actually a tensor, which means it is possible to have different values
in different directions.
List of thermal conductivities (wiki).
Cooling mechanism increases solar energy harvesting for self-powered
outdoor sensors. With the use of a wavelength-selective emitter to
create constant radiative cooling, thermoelectric devices can generate
voltage continuously. Thermoelectric devices, which use the temperature
difference between the top and bottom of the device to generate power,
offer some promise for harnessing naturally occurring energy. Authors
tested one made up of a wavelength-selective emitter that constantly cools
the device during the day using radiative cooling. As a result, the top of
the device is cooler than the bottom, causing a temperature difference
that creates constant voltage through day and night.
Heat
Capacity is a measurable physical quantity equal to the ratio of the
heat added to (or removed from) an object to the resulting temperature
change.
Thermodynamics.
Photodissociation, photolysis, or photodecomposition is a chemical
reaction in which a chemical compound is broken down by photons. It is
defined as the interaction of one or more photons with one target
molecule. Photodissociation is not limited to visible light. Any photon
with sufficient energy can affect the chemical bonds of a chemical
compound. Since a photon's energy is inversely proportional to its
wavelength,
electromagnetic waves with the energy of visible light or
higher, such as ultraviolet light, x-rays and gamma rays are usually
involved in such reactions.
Ericsson Cycle (wiki)
Heat Engine is a system that converts heat or
thermal energy—and
chemical energy—to
mechanical energy, which can then be used to do
mechanical work. it does this by bringing a working substance from a
higher state temperature to a lower state temperature. A
Heat "source"
generates thermal energy that brings the working substance to the high
temperature state. The working substance generates work in the
"working body" of the engine while transferring heat to the colder "sink"
until it reaches a low temperature state. During this process some of the
thermal energy is converted into work by exploiting the properties of the
working substance. The working substance can be any system with a non-zero
heat capacity, but it usually is a gas or liquid. During this process, a
lot of heat is lost to the surroundings, i.e. it cannot be used. In
general an engine converts energy to mechanical work. Heat engines
distinguish themselves from other types of engines by the fact that their
efficiency is fundamentally limited by
Carnot's theorem. Although this efficiency limitation can be a
drawback, an advantage of heat engines is that most forms of energy can be
easily converted to heat by processes like exothermic reactions (such as
combustion), absorption of light or energetic particles, friction,
dissipation and resistance. Since the heat source that supplies thermal
energy to the engine can thus be powered by virtually any kind of energy,
heat engines are very versatile and have a wide range of applicability.
Closed Brayton Cycle is driven in reverse, via net work input, and
when air is the working fluid, is the gas refrigeration cycle or Bell
Coleman cycle. Its purpose is to move heat, rather than produce work. This
air cooling technique is used widely in jet aircraft for air conditioning
systems utilizing air tapped from the engine compressors. It is also used
in the LNG industry where the largest reverse brayton cycle is for
subcooling LNG using 86 MW of power from a gas turbine driven compressor
and nitrogen refrigerant.
Thermal Metamaterial innovation could help bring waste-heat harvesting
technology to power plants, factories
to recapture a portion of the
energy wasted as heat.
Solar Heat.
Thermal Radiation is electromagnetic radiation generated by the
thermal motion of
charged particles in matter. All matter with a
temperature greater than absolute zero emits thermal radiation. When the
temperature of a body is greater than absolute zero, inter-atomic
collisions cause the
kinetic energy of the
atoms or
molecules to change.
This results in charge-acceleration and/or dipole oscillation which
produces electromagnetic radiation, and the wide spectrum of radiation
reflects the wide spectrum of energies and accelerations that occur even
at a single temperature.
Thermophotovoltaic is a direct conversion process from heat to
electricity via photons. A basic thermophotovoltaic system consists of
a thermal emitter and a photovoltaic diode cell.
Geo-Thermal -
Thermodynamics
Lumen - Eternal Flashlight That Doesn't Need Batteries.
The Hollow Thermoelectric
Flashlight
Using four Peltier tiles and the
temperature difference between the
palm of the hand and ambient air,
only needs a five degree temperature
difference to work and produce up to
5.4 mW at 5 foot candles of brightness.
Outgoing Longwave Radiation is the energy radiating from the
Earth as infrared radiation at low energy to Space.
Thermoelectric Wood Stove Generator (youtube)
Stower Energy
Thermal Energy refers to the internal energy present in a
system due to its temperature.
Thermodynamic magic enables cooling without energy consumption.
Physicists have developed an amazingly simple device that allows heat to
flow temporarily from a cold to a warm object without an external power
supply. Intriguingly, the process initially appears to contradict the
fundamental laws of physics.
Kinetic - Piezoelectric
Kinetic Energy of an object is the energy that it possesses
due to its
motion.
It is defined as the work needed to accelerate a body of a given mass from
rest to its stated velocity. Having gained this energy during its
acceleration, the body maintains this kinetic energy unless its speed
changes. The same amount of work is done by the body in decelerating from
its current speed to a state of rest. Ek = Kinetic energy, m = mass, v =
velocity. Kinetic Energy Formula Ek = 1/2 mv2 - Ek, is the energy of a
mass, m, in motion, v2.
Kinetic relates to the
motion of material bodies and the
forces associated therewith.
Static Electricity -
Hot and
Cold -
Rotational Energy.
Threshold Energy for production of a particle is the minimum kinetic
energy a pair of traveling
particles
must have when they collide. The threshold energy is always greater than
or equal to the
Rest Energy of the desired particle. In most cases, since
momentum is also
conserved, the threshold energy is significantly greater than the rest
energy of the desired particle - and thus there will still be considerable
kinetic energy in the final particles.
Threshold Displacement Energy is the minimum kinetic energy that an
atom in a solid needs to be permanently displaced from its lattice
site to a defect position. It is also known as "displacement threshold
energy" or just "displacement energy".
Kinetic
Theory of Gases describes a gas as a large number of submicroscopic
particles (atoms or molecules), all of which are in constant rapid
motion that has
randomness arising from their many collisions with each other and with the
walls of the container. Kinetic theory explains macroscopic properties of
gases, such as pressure,
temperature,
viscosity,
thermal conductivity, and
volume, by considering their molecular composition and motion. The theory
posits that gas pressure is due to the impacts, on the walls of a
container, of molecules or atoms moving at different velocities. Kinetic
theory defines temperature in its own way, in contrast with the
thermodynamic definition. Under a microscope, the molecules making up a
liquid are too small to be visible, but the jittery motion of pollen
grains or dust particles can be seen. Known as Brownian motion, it results
directly from collisions between the grains or particles and liquid
molecules. As analyzed by Albert Einstein in 1907, this experimental
evidence for kinetic theory is generally seen as having confirmed the
concrete material existence of atoms and molecules.
Regenerative Braking
-
Potential Energy
Torsion Spring is a spring that works by
torsion or
twisting; that is, a
flexible elastic object that stores mechanical energy
when it is twisted. When it is twisted, it exerts a force (actually
torque) in the opposite direction, proportional to the amount (angle) it
is twisted.
Mousetrap (wiki).
Elastic Energy is the potential mechanical energy stored in the
configuration of a material or physical system as work is performed to
distort its volume or shape. Elastic energy occurs when
objects are compressed and stretched, or generally deformed in any manner.
Elasticity theory primarily develops formalisms for the mechanics of solid
bodies and materials. (Note however, the work done by a stretched
rubber
band is not an example of elastic energy. It is an example of entropic
elasticity.) The elastic potential energy equation is used in calculations
of positions of mechanical equilibrium. The energy is potential as it will
be converted into the second form of energy, such as kinetic.
Electric Textile Lights a Lamp when Stretched. Researchers have
developed a fabric that converts kinetic energy into electric power.
The greater the load applied to the textile and the wetter it becomes the
more electricity it generates.
Energy-Harvesting Yarns Generate Electricity. Coiled carbon nanotube
yarns generate electrical energy when stretched or twisted.
Pavegen
generates electricity from footsteps and captures data within the urban
environment.
Human Energy
Vibration-Powered Generator is a type of electric generator that
converts the kinetic energy from vibration into
electrical energy. The
vibration may be from
sound
pressure waves or other ambient sources. Vibration powered generators
usually consist of a
resonator which is used to amplify the vibration source, and a
transducer mechanism
which converts the energy from the vibrations into electrical energy. The
transducer usually consists of a magnet and coil or a piezoelectric
crystal.
Piezo Effect is electricity
produced by
mechanical
pressure on certain crystals, where
electrostatic stress
produces a change in the linear dimensions of the crystal.
Piezoelectricity is the electric charge that accumulates in certain
solid materials (such as crystals, certain ceramics, and biological
matter such as bone, DNA and various proteins) in response to applied
mechanical stress. The word piezoelectricity means electricity resulting
from
pressure.
London's Bird
Street is the World's first 'Smart Street' that generate electricity from
people just walking.
Pavegen Energy
Generating Walkways
Walking and Pedestrian Infrastructure. City Walking Scores.
Ultrathin device harvests electricity from human motion. Ultralow
Frequency Electrochemical Mechanical Strain Energy Harvester using 2D
Black Phosphorus Nanosheets.
3-D Printed
Piezoelectric Materials (youtube) - New printing technique and
materials could be used to develop intelligent materials and
self-adaptive infrastructures and
transducers.
Piezo Electric Materials
Shoe Charges Phone when Walking
New Fabric Uses Sun and Wind to Power DevicesElectricity
generated from low-cost biomaterial
biomolecule
glycine amino acid, when tapped or squeezed, can generate enough
electricity to power electrical devices. It can be produced at less than
one per cent of the cost of currently used piezoelectric materials.
Quantum Mechanical/Effective Fragment Potential-Molecular Dynamics (QM/EFP–MD)
Simulation: A Smart Sampling Technique in Condensed Phase.
Nanogenerator is a type of technology that converts mechanical/thermal
energy as produced by
small-scale physical change into electricity.
Nano-Generator has three typical approaches: piezoelectric, triboelectric,
and pyroelectric nanogenerators. Both the piezoelectric and triboelectric
nanogenerators can convert the mechanical energy into electricity.
However, the pyroelectric nanogenerators can be used to harvest thermal
energy from a time-dependent temperature fluctuation.
Micro-Generation -
Electric Generator
Triboelectric Effect is a type of contact electrification in which
certain materials become electrically charged after they come into
frictional contact with a different material.
Triboelectric Nanogenerator is an energy
harvesting device that converts the external mechanical energy into
electricity by a conjunction of triboelectric effect and electrostatic
induction.
Triboelectric Nanogenerators and Power-Boards from Cellulose Nanofibrils
and Recycled Materials The technology could be incorporated into
flooring and convert footsteps on the flooring into usable electricity.
Pyroelectricity is the ability of certain materials to generate a
temporary voltage when they are heated or cooled.
Dark Matter
Energy
from Evaporating Water (youtube)
Liquid metal synthesis for better piezoelectrics: Atomically-thin
tin-monosulfide. Potential materials for future wearable electronics
and other motion-powered, energy-harvesting devices. Scientists have
applied liquid-metal synthesis to piezoelectrics, advancing future
flexible, wearable electronics, and biosensors drawing their power from
the body's movements. Piezoelectric materials such as atomically-thin tin-monosulfide
(SnS) convert mechanical forces or movement into electrical energy. Along
with their inherent flexibility, this makes them candidates for flexible
nanogenerators in wearable electronics or internal, self-powered
biosensors.
Perpetual
Perpetual Motion is
motion of bodies that continues
indefinitely.
Zero-Point Energy
(free energy)
Atoms are
perpetual motion, they seem to spin
forever. The
sun is
perpetual motion, it's a
controlled chain reaction that lasts billions of
years.
Perpetual motion is
useless if it doesn't
produce
more energy than what goes in. People trying to create perpetual
motion machines can help people design more
efficient machines or machines with less
friction.
Conservation of
Energy -
Entropy
Potential Well
-
Feedback Loops
Thermodynamic Laws -
Nano Machines
Action Physics -
Gyroscopes
Justin Hall (youtube) -
Perpetual Motion Machines (youtube)
Fuel
Saving System
Energy Digital -
Thermal Electric Energy
Infinite Energy Mag is a bi-monthly magazine published in
New Hampshire that details theories and experiments concerning alternative
energy, new science and new physics.
Carnot Cycle is
an efficient
heat engine cycle consisting of two
isothermal processes and two
adiabatic processes. The Carnot cycle
can be thought of as the most efficient heat engine cycle allowed by
physical laws. It provides an upper limit on the efficiency that any
classical thermodynamic engine can achieve during the conversion of heat
into work, or conversely, the efficiency of a refrigeration system in
creating a temperature difference by the application of work to the
system. It is not an actual thermodynamic cycle but is a theoretical
construct. Every single thermodynamic system exists in a particular state.
When a system is taken through a series of different states and finally
returned to its initial state, a thermodynamic cycle is said to have
occurred. In the process of going through this cycle, the system may
perform work on its surroundings, for example by moving a piston, thereby
acting as a heat engine. A system undergoing a Carnot cycle is called a
Carnot heat engine, although such a "perfect" engine is only a theoretical
construct and cannot be built in practice. However, a microscopic Carnot
heat engine has been designed and run. Essentially, there are two "heat
reservoirs" forming part of the heat engine at temperatures Th and Tc (hot
and cold respectively). They have such large thermal capacity that their
temperatures are practically unaffected by a single cycle. Since the cycle
is theoretically reversible, there is no generation of entropy during the
cycle; entropy is conserved. During the cycle, an arbitrary amount of
entropy ΔS is extracted from the hot reservoir, and deposited in the cold
reservoir. Since there is no volume change in either reservoir, they do no
work, and during the cycle, an amount of energy ThΔS is extracted from the
hot reservoir and a smaller amount of energy TcΔS is deposited in the cold
reservoir. The difference in the two energies (Th-Tc)ΔS is equal to the
work done by the engine.
Maxwell's
Demon is a thought experiment created by the physicist James Clerk
Maxwell in which he suggested how the second law of thermodynamics might
hypothetically be violate.
Supreme
Skills! Miracle Tops:
May They Spin Forever! (youtube)
See-Saw
Balance. Perpetual Motion Machine (youtube)
Energy by
Motion EBM Magnetic Self Perpetuating Power Plant (youtube)
How to Assemble a HHO Generator and why it works The Brown gas
generator uses
electrolysis to split water (H2O) into it´s base molecules,
2 hydrogen and 1 oxygen molecule. This is why it is often referred to as
an HHO gas generator.
Hydro
Water Power -
Bhāskara's Wheel (wiki)
What are the
differences between H2O and HHO (youtube)
The Hutchison
Effect & Free Energy - LightworksAV Documentary (Part 2 of 2) (youtube) -
Light Works AV
DePalma N-machine
11/18 (youtube) -
Depalma
Sterling Engine -
Engines
Steorn
is a small, private technology development company based in Dublin,
Ireland. It announced in August 2006 it had developed a technology which
provides "free, clean, and constant energy".
Wireless Electricity
Contactless Energy Transfer
is the transmission of
electrical energy from a power source to an
electrical load, such as an electrical
power grid or a consuming device,
without the use of discrete human-made conductors.
Wireless Communication.
Wireless Power
is the transmission of electrical energy from a power source to an
electrical load, such as an
electrical power grid or a consuming device,
without the use of discrete
human-made conductors.
Converting Wi-Fi Signals to Electricity with new 2D Materials. Device
made from flexible, inexpensive materials could power large-area
electronics, wearables, medical devices, and more. All rectennas rely on a
component known as a "rectifier," which converts the AC input signal into
DC power.
Power
over Wi-Fi System.
Rectenna
a special type of receiving antenna that is used for converting
electromagnetic energy into direct current (DC) electricity. They are used
in wireless power transmission systems that transmit power by radio waves.
A simple rectenna element consists of a
Dipole Antenna with an RF diode connected across the dipole elements.
The diode rectifies the AC induced in the antenna by the microwaves, to
produce DC power, which powers a load connected across the diode.
Schottky diodes are usually used because they have the lowest voltage
drop and highest speed and therefore have the lowest power losses due to
conduction and switching. Large rectennas consist of an
array of many such dipole
elements.
Resonant Inductive Coupling
is the near field wireless transmission of electrical energy between two
magnetically coupled coils that are part of resonant circuits tuned to
resonate at the same frequency. This process occurs in a resonant
transformer, an electrical component which consists of two high Q coils
wound on the same core with capacitors connected across the windings to
make two coupled LC circuits.
First Battery-Free Cellphone makes calls by Harvesting Ambient Power.
Engineers have designed the first battery-free cellphone that can send and
receive calls using only a few
microwatts of power, which it harvests from ambient
radio signals or
light.
Battery-Free
Cellphone (youtube)
Ambient is
the surrounding area or environment that is close by.
Electromagnetic Induction
is the production of an electromotive force (i.e., voltage) across an
electrical conductor due to its dynamic interaction with a magnetic field.
Magnetics.
Linear induction Motor asynchronous linear motor that
works by the same general principles as other induction motors but is
typically designed to directly produce motion in a straight line.
Characteristically, linear induction motors have a finite primary or
secondary length, which generates end-effects, whereas a conventional
induction motor is arranged in an endless loop.
Induction Motor is an AC electric motor in which the
electric current in the rotor needed to produce torque is obtained by
electromagnetic induction from the magnetic field of the stator winding.
An induction motor can therefore be made without electrical connections to
the rotor as are found in universal, DC and synchronous motors. An
asynchronous motor's rotor can be either wound type or squirrel-cage type.
Electrostatics is a branch of physics that deals with
the phenomena and properties of stationary or slow-moving electric
charges.
Electrostatic induction is a redistribution of
electrical charge in an object, caused by the influence of nearby charges.
In the presence of a charged body, an insulated conductor develops a
positive charge on one end and a negative charge on the other end.
OLV Technology
Charging of jumping droplets
Free Electricity (youtube)
"Electric power is everywhere present in unlimited quantities and can drive the world's
machinery without the need of coal, oil, gas, or any other
fuels." -
Nikola
Tesla believed there could be a global network of wireless
Electricity
that would use an electromagnetic wave that reverberated between
the ionosphere (a layer of the Earth’s atmosphere filled with ions and
free electrons) and the ground.
Nikola Tesla (youtube)
Tesla's Little Secret (Original) (youtube)
Atmospheric electricity. Free energy (youtube)
Atmospheric Electricity is the study of electrical charges
in the Earth's atmosphere (or that of another planet). The movement of
charge between the Earth's surface, the atmosphere, and the ionosphere is
known as the global atmospheric electrical circuit. Atmospheric
electricity is an interdisciplinary topic, involving concepts from
electrostatics, atmospheric physics, meteorology and Earth science.
Electricity.
Radiant Energy
is the energy of
electromagnetic and gravitational radiation. The SI unit
of radiant energy is the joule (J). The quantity of radiant energy may be
calculated by integrating
radiant flux (or power) with respect to time.
13 year old Invents
Free Energy Device for 14 bucks! (youtube)
Electromagnetic
Harvester conducts
radio waves, thermal and static energy, and turns into
electricity.
Wireless Charging -
Chargers
Physics of Wireless Charging
Galvanometer is an electromechanical instrument used for
detecting and indicating an electric current. A galvanometer works as an
actuator, by producing a rotary deflection (of a "pointer"), in response
to electric current flowing through a coil in a constant magnetic field.
Early galvanometers were not calibrated, but their later developments were
used as measuring instruments, called ammeters, to measure the current
flowing through an electric circuit.
WitriCity
Qi inductive Power Standard is an open interface standard
that defines wireless power transfer using inductive charging over
distances of up to 4 cm (1.6 inches), and is developed by the Wireless
Power Consortium. The system uses a charging pad and a compatible device,
which is placed on top of the pad, charging via resonant inductive
coupling.
Wireless Data (Li-Fi)
Quasistatic Cavity Resonance for Ubiquitous Wireless Power Transfer
Wireless power delivery has the potential to seamlessly power our
electrical devices as easily as data is transmitted through the air.
Generate quasistatic magnetic fields that safely deliver kilowatts of
power to mobile receivers contained nearly anywhere within a short
distance. Safety analysis shows that up to 1900 watts can be transmitted
to a coil receiver enabling safe and ubiquitous wireless power.
Tiny chip powers itself from radio waves.
Dutch specialists have developed a minor sensor that
measures temperature, light, and air, without needing a battery.
The sensor contains a receiving wire that gets commands from a remote switch.
Wireless Communication.
Frequency Splitting is a key
characteristic of wireless power transfer system. With the increases of
coupling coefficient, the power transferred to load drops sharply. The
resonant frequency splits from one into two within splitting region. With
impedance analysis, the even and odd splitting frequencies were derived.
Frequency Adding is adding waves of
different frequencies together.
Engines
Engine is a
machine designed to
convert one form of
energy
into mechanical energy. Heat engines burn a fuel to create heat, which
then creates a force.
Electric motors convert
electrical energy into
mechanical motion; pneumatic motors use
compressed air and clockwork
motors in wind-up toys use
elastic energy. In biological systems,
molecular motors, like myosins in muscles, use chemical energy to create
forces and eventually
motion.
Steam Engine
-
Rockets -
Fire -
Chemical Reaction -
Lightning -
Electric Motors (motors)
External Combustion Engine is a heat engine where a working fluid,
contained internally, is heated by combustion in an external source,
through the engine wall or a heat exchanger.
Internal Combustion Engine is a heat engine where the combustion of a
fuel occurs with an oxidizer (usually air) in a combustion chamber that is
an integral part of the working fluid flow circuit. In an internal
combustion engine the expansion of the high-temperature and high-pressure
gases produced by combustion apply direct force to some component of the
engine. The force is applied typically to pistons, turbine blades, rotor
or a nozzle. This force moves the component over a distance, transforming
chemical energy into useful mechanical energy.
Combustion is a high-temperature
exothermic redox chemical reaction between a fuel (the reductant) and
an oxidant, usually atmospheric oxygen, that produces oxidized, often
gaseous products, in a mixture termed as smoke. Combustion in a fire
produces a flame, and the heat produced can make combustion
self-sustaining. Combustion is often a complicated sequence of elementary
radical reactions. Solid fuels, such as wood and coal, first undergo
endothermic pyrolysis to produce gaseous fuels whose combustion then
supplies the heat required to produce more of them. Combustion is often
hot enough that incandescent light in the form of either glowing or a
flame is produced. A simple example can be seen in the combustion of
hydrogen and oxygen into water vapor, a reaction commonly used to fuel
rocket engines. This reaction releases 242 kJ/mol of heat and reduces the
enthalpy accordingly (at constant temperature and pressure): 2H 2(g) + O
2(g) → 2H 2O(g). Combustion of an organic fuel in air is always exothermic
because the double bond in O2 is much weaker than other double bonds or
pairs of single bonds, and therefore the formation of the stronger bonds
in the combustion products CO2 and H2O results in the release of energy.
The bond energies in the fuel play only a minor role, since they are
similar to those in the combustion products; e.g., the sum of the bond
energies of CH4 is nearly the same as that of CO2. The heat of combustion
is approximately -418 kJ per mole of O2 used up in the combustion
reaction, and can be estimated from the elemental composition of the fuel.
Uncatalyzed combustion in air requires fairly high temperatures. Complete
combustion is stoichiometric with respect to the fuel, where there is no
remaining fuel, and ideally, no remaining oxidant. Thermodynamically, the
chemical equilibrium of combustion in air is overwhelmingly on the side of
the products. However, complete combustion is almost impossible to
achieve, since the chemical equilibrium is not necessarily reached, or may
contain unburnt products such as carbon monoxide, hydrogen and even carbon
(soot or ash). Thus, the produced smoke is usually toxic and contains
unburned or partially oxidized products. Any combustion at high
temperatures in atmospheric air, which is 78 percent nitrogen, will also
create small amounts of several nitrogen oxides, commonly referred to as
NOx , since the combustion of nitrogen is thermodynamically favored at
high, but not low temperatures. Since combustion is rarely clean, flue gas
cleaning or catalytic converters may be required by law. Fires occur
naturally, ignited by lightning strikes or by volcanic products.
Combustion (fire) was the first controlled chemical reaction discovered by
humans, in the form of campfires and bonfires, and continues to be the
main method to produce energy for humanity. Usually, the fuel is carbon,
hydrocarbons or more complicated mixtures such as wood that contains
partially oxidized hydrocarbons. The thermal energy produced from
combustion of either fossil fuels such as coal or oil, or from renewable
fuels such as firewood, is harvested for diverse uses such as cooking,
production of electricity or industrial or domestic heating. Combustion is
also currently the only reaction used to power rockets. Combustion is also
used to destroy (incinerate) waste, both nonhazardous and hazardous.
Oxidants for combustion have high oxidation potential and include
atmospheric or pure oxygen, chlorine, fluorine, chlorine trifluoride,
nitrous oxide and nitric acid. For instance, hydrogen burns in chlorine to
form hydrogen chloride with the liberation of heat and light
characteristic of combustion. Although usually not catalyzed, combustion
can be catalyzed by platinum or vanadium, as in the contact process.
Combust is to cause burning to start
burning or burst into flames.
Ignition System
generates a spark or heats an electrode to a high temperature to ignite a
fuel-air mixture in spark ignition internal combustion engines, oil-fired
and gas-fired boilers, rocket engines, etc. The widest application for
spark ignition internal combustion engines is in petrol (gasoline) road
vehicles such as cars and motorcycles. Compression ignition Diesel engines
ignite the fuel-air mixture by the heat of compression and do not need a
spark. They usually have glowplugs that preheat the combustion chamber to
allow starting in cold weather. Other engines may use a flame, or a heated
tube, for ignition. While this was common for very early engines it is now
rare. The first electric spark ignition was probably Alessandro Volta's
toy electric pistol from the 1780s.
Ignition is the action of setting something on
fire or starting to burn. the process of
starting the combustion of fuel in the cylinders of an internal combustion
engine. the mechanism for bringing about ignition in an internal
combustion engine, typically activated by a key or switch.
Ignite is to cause burning to start
burning or burst into
flames; subject to fire or great heat. Arouse or excite feelings and
passions.
Spark
Plug is a device for delivering electric current from an ignition
system to the combustion chamber of a spark-ignition engine to ignite the
compressed fuel/air mixture by an electric spark, while containing
combustion pressure within the engine. A spark plug has a metal threaded
shell, electrically isolated from a central electrode by a porcelain
insulator. The central electrode, which may contain a resistor, is
connected by a heavily insulated wire to the output terminal of an
ignition coil or magneto. The spark plug's metal shell is screwed into the
engine's cylinder head and thus electrically grounded. The central
electrode protrudes through the porcelain insulator into the combustion
chamber, forming one or more spark gaps between the inner end of the
central electrode and usually one or more protuberances or structures
attached to the inner end of the threaded shell and designated the side,
earth, or ground electrode(s).Spark plugs may also be used for other
purposes; in Saab Direct Ignition when they are not firing, spark plugs
are used to measure ionization in the cylinders – this ionic current
measurement is used to replace the ordinary cam phase sensor, knock sensor
and misfire measurement function. Spark plugs may also be used in other
applications such as furnaces wherein a combustible fuel/air mixture must
be ignited. In this case, they are sometimes referred to as flame
igniters.
Electric Spark is an abrupt
electrical discharge that occurs when a sufficiently high electric
field creates an ionized, electrically conductive channel through a
normally-insulating medium, often air or other gases or gas mixtures.
Michael Faraday described this phenomenon as "the beautiful flash of light
attending the discharge of common electricity". The rapid transition from
a non-conducting to a conductive state produces a brief emission of light
and a sharp crack or snapping sound. A spark is created when the applied
electric field exceeds the dielectric breakdown strength of the
intervening medium. For air, the breakdown strength is about 30 kV/cm at
sea level. Experimentally, this figure tends to differ depending upon
humidity, atmospheric pressure, shape of electrodes (needle and
ground-plane, hemispherical etc.) and the corresponding spacing between
them and even the type of waveform, whether sinusoidal or
cosine-rectangular. At the beginning stages, free electrons in the gap
(from cosmic rays or background radiation) are accelerated by the
electrical field. As they collide with
air molecules, they create additional ions and newly freed electrons which
are also accelerated. At some point, thermal energy will provide a much
greater source of ions. The exponentially-increasing electrons and ions
rapidly cause regions of the air in the gap to become electrically
conductive in a process called dielectric breakdown. Once the gap breaks
down, current flow is limited by the available charge (for an
electrostatic discharge) or by the impedance of the external power supply.
If the power supply continues to supply current, the spark will evolve
into a continuous discharge called an electric arc. An electric spark can
also occur within insulating liquids or solids, but with different
breakdown mechanisms from sparks in gases. Sometimes, sparks can be
dangerous. They can cause fires and burn skin.
Lightning is an example of an electric
spark in nature, while electric sparks, large or small, occur in or near
many man-made objects, both by design and sometimes by accident.
Spark is a small fiery particle thrown off
from a fire, alight in ashes, or produced by striking together two hard
surfaces such as stone or metal. A small fragment of a burning substance
thrown out by burning material or by friction Electrical conduction
through a gas in an applied electric field. A momentary
flash of light.
Flint is
a sedimentary cryptocrystalline form of the mineral quartz, categorized as
the variety of chert that occurs in chalk or marly limestone. Flint was
widely used historically to make stone tools and start fires. It occurs
chiefly as nodules and masses in sedimentary rocks, such as chalks and
limestones. Inside the nodule, flint is usually dark grey, black, green,
white or brown in colour, and often has a glassy or waxy appearance. A
thin layer on the outside of the nodules is usually different in colour,
typically white and rough in texture. The nodules can often be found along
streams and beaches. Flint breaks and chips into sharp-edged pieces,
making it useful for knife blades and other cutting tools. The use of
flint to make stone tools dates back millions of years, and flint's
extreme durability has made it possible to accurately date its use over
this time. Flint is one of the primary materials used to define the Stone
Age. During the Stone Age, access to flint was so important for survival
that people would travel or trade to obtain flint. Flint Ridge in Ohio was
an important source of flint and Native Americans extracted the flint from
hundreds of quarries along the ridge. This "Ohio Flint" was traded across
the eastern United States and has been found as far west as the Rocky
Mountains and south around the Gulf of Mexico. When struck against steel,
flint will produce enough sparks to ignite a fire with the correct tinder,
or gunpowder used in weapons. Although it has been superseded in these
uses by different processes (the percussion cap), or materials, (ferrocerium),
"flint" has lent its name as generic term for a fire starter.
Fire
Striker is a piece of carbon steel from which sparks are struck by the
sharp edge of flint, chert or similar rock. It is a specific tool used in
firemaking. Upon contact with oxygen in the air, the surfaces of the iron
particles spontaneously ignite and give off heat as they oxidize (rust).
Because the surface area of the iron particles is so large compared to
their volume, the particles quickly heat up and glow red hot. They become
sparks.
Fire
Making is the process of starting a fire artificially. It requires
completing the fire triangle, usually by heating tinder above its
autoignition temperature.
Fire
Piston uses the principle of the heating of a gas or air by rapid and
adiabatic compression to ignite a piece of tinder, which is then used to
set light to kindling.
Back-fire is combustion or an explosion produced by a running internal
combustion engine that occurs in the air intake system rather than inside
the combustion chamber. Unburnt fuel that is ignited in the exhaust system
can produce loud sounds even if flames are not present at the tailpipe.
This is called an after-fire since a backfire occurs through the intake
system. A visible flame may momentarily shoot out of the exhaust pipe
under some conditions. Either condition may cause a loud popping noise and
usually indicates an improperly tuned engine. A common cause of after-fire
is from running rich (too much fuel going into cylinders), or faulty
ignition possibly a fouled (dirty) spark plug, coil, or plug wire. A
backfire (inlet manifold, carburetor/throttle body, or air cleaner) of an
internal combustion engine can occur when the valves are not shutting
correctly. The term derives from parallel experiences with early
unreliable firearms or ammunition, in which the explosive force was
directed out at the breech instead of the muzzle. From
this came the use of the word "backfire" as a verb to indicate something
that produces an unintended, unexpected, and undesired result.
Turbocharger is a
turbine-driven
forced induction device that increases an internal combustion engine's
efficiency and power output by forcing extra compressed air into the
combustion chamber. This improvement over a naturally aspirated engine's
power output is due to the fact that the compressor can force more air—and
proportionately more fuel—into the combustion chamber than atmospheric
pressure (and for that matter, ram air intakes) alone.
Turbine is a
rotary mechanical device that extracts energy
from a fluid flow and converts it into useful work. A turbine is a
turbomachine with at least one moving part called a rotor assembly,
which is a shaft or drum with blades attached. Moving fluid acts on the
blades so that they move and impart rotational energy to the rotor. Early
turbine examples are windmills and waterwheels.
Fans.
Compressor
is a mechanical device that
increases the pressure of a gas
by reducing its volume. An air compressor is a specific type of gas
compressor.
Refrigeration.
Air
Compressor is a device that converts power (using an electric motor,
diesel or gasoline engine, etc.) into potential energy stored in
pressurized air (i.e., compressed air). By one of several methods, an air
compressor forces more and more air into a storage tank, increasing the
pressure. When tank pressure reaches its engineered upper limit, the air
compressor shuts off. The compressed air, then, is held in the tank until
called into use. The energy contained in the compressed air can be used
for a variety of applications, utilizing the kinetic energy of the air as
it is released and the tank depressurizes. When tank pressure reaches its
lower limit, the air compressor turns on again and re-pressurizes the
tank. An air compressor must be differentiated from a pump because it
works for any gas/air, while pumps work on a liquid.
Heat
Engine is a system that converts heat or
thermal energy—and
chemical
energy—to
mechanical energy, which can then be used to do mechanical
work. It does this by
bringing a working substance from a higher state temperature to a lower
state temperature. A heat "source" generates thermal energy that brings
the working substance to the high temperature state. The working substance
generates work in the "working body" of the engine while transferring heat
to the colder "sink" until it reaches a low temperature state. During this
process some of the thermal energy is converted into work by exploiting
the properties of the working substance. The working substance can be any
system with a non-zero heat capacity, but it usually is a gas or liquid.
During this process, a lot of heat is lost to the surroundings, i.e. it
cannot be used.
Stirling.
Reciprocating Engine also often known as a piston engine, is
a heat engine (usually, although there are also pneumatic and hydraulic
reciprocating engines) that uses one or more reciprocating pistons to
convert pressure into a rotating
motion.
Small revving single-cylinder engine from paper (youtube)
Motive Power is a
natural agent, such as water or
steam, wind or
electricity, used to impart
motion to machinery
such as an
engine. Motive power may also be a
locomotive or a motor, which provides motive power to a system. Motive
power may be thought of as a synonym for either "work", i.e. force times
distance [J], or "power" [J/s].
Biodiesel Fuels
Biodiesel Advancements
Biodiesel
Biodiesel Research
WVO Designs
Waste Vegetable Oil Fuel (wiki)
Largest Populus single nucleotide polymorphism SNP dataset holds promise
for biofuels, materials, metabolites
Bio Fuels
Bio Diesel
Bio-Based Motor Oil
EZ Biodiesel
Biodiesel Alliance
Biochemical Engineering (wiki)
Grease Recycling
Mobile
Biofuel
Diesel Cycle (wiki)
Bio Energy
Cerium Oxide
‘Super yeast’ has the power to improve economics of Biofuels
Turning biofuel waste into wealth in a single step adding formaldehyde
to
Lignin
could convert up to 80% of it into valuable molecules for biofuel and
plastics.
Synthetic Fuel
is a liquid fuel, or sometimes gaseous fuel, obtained from syngas, a
mixture of carbon monoxide and hydrogen, in which the
syngas was derived from
gasification of solid feedstocks such as coal or biomass or by reforming
of natural gas. Common methods for manufacturing synthetic fuels
include the Fischer Tropsch conversion, methanol to gasoline conversion,
or direct coal liquefaction.
A better view of synthetic fuel production
Dual-purpose
biofuel crops could produce both ethanol and biodiesel for nine months of
the year
Diesel HPR
is refined from recycled fats & oils, but does not contain
biodiesel.
Home
Ethanol Fuel -
HP 2 G
Waste to Energy
Revolution Green 2.0 (Film) -
Fuel (Documentary) -
Freedom Fuels (Film)
Diesel Conversion -
Diesel to Vegetable Oil
Green Auto Blog -
Goin Green
Fuel Economy -
NREL
Green Car Congress
Energy Efficiency &Renewable Energy
Environmental Protection Agency
Environmental Defense
Tree Hugger
Megawatt Motor Works
Learn Car Mechanics (ehow)
Car Racing -
List of Fastest Production Cars (wiki)
Yokohama Tire Avid Ascend
Lubri-Check Measures Oil Viscosity
Eco Touch
Waterless Carwash
Eco-Modder Fuel Economy Tips
Green Products -
Green Building
Green Jobs -
Green News -
Green Ideas
Science Websites
-
Engineering -
Wireless Energy
It takes 50,000 lbs. of Raw Material to make a 3,000 lb. Car.
Every Gallon of Gas Burned Creates 19 lbs. of
CO2.
Gas Engine Inefficiency of thermal engines is the
relationship between the total energy contained in the fuel, and the
amount of energy used to perform useful work. There are two
classifications of thermal engines-Internal combustion (gasoline, diesel
and gas turbine, i.e., Brayton cycle engines) and External combustion
engines (steam piston, steam turbine, and the Stirling cycle engine).
Fossil Fuel are fuels formed by natural processes such as
anaerobic decomposition of buried dead organisms, containing energy
originating in ancient photosynthesis. The age of the organisms and their
resulting fossil fuels is typically millions of years, and sometimes
exceeds 650 million years. Fossil fuels contain high percentages of carbon
and include petroleum, coal, and natural gas. Other commonly used
derivatives include kerosene and propane. Fossil fuels range from volatile
materials with low carbon: hydrogen ratios like methane, to liquids like
petroleum, to nonvolatile materials composed of almost pure carbon, like
anthracite coal. Methane can be found in hydrocarbon fields either alone,
associated with oil, or in the form of methane clathrates.
Generators - Motors
Generator is an engine that
converts
mechanical energy into electrical energy by
electromagnetic induction, which is the production of an
electromotive
force or voltage across an electrical
conductor in a changing
magnetic field.
Electric Motor is an
electrical
machine that
converts
electrical energy into mechanical energy. The reverse of this would be the
conversion of mechanical energy into electrical energy and is done by an
electric generator.
Electric Motors are about 70% more efficient than
combustion engines and electric motors last longer and also require
less maintenance.
Electric Cars.
Electric Motors are about
70% more efficient than
combustion engines
and electric motors
last longer and also
require less maintenance.
Motor is a machine, especially one powered
by electricity or
internal combustion, that
supplies motive power for a vehicle or for some other device with moving
parts, giving, imparting, or producing
motion or action.
Electric Generator is a device that converts mechanical
energy to
electrical energy for use in an external circuit. The
source of mechanical energy may vary widely from a hand crank to
an internal combustion engine. Generators provide nearly all of
the power for
electric power grids.
Electricity from the Sun -
Batteries.
Rotor is the rotating armature of a
motor or generator. Rotating mechanism consisting of an assembly of
rotating airfoils.
Rotor is a moving component of an electromagnetic system in the
electric motor, electric generator, or alternator. Its rotation is due to
the interaction between the windings and magnetic fields which produces a
torque around the rotor's axis.
Stator is the
stationary part of a rotary system, found in electric generators, electric
motors, sirens, mud motors or biological rotors. Energy flows through a
stator to or from the rotating component of the system. In an electric
motor, the stator provides a rotating magnetic field that drives the
rotating armature; in a
generator, the
stator converts the rotating magnetic field to electric current. In fluid
powered devices, the stator guides the flow of fluid to or from the
rotating part of the system.
Coil
Winding is the manufacture of electromagnetic coils. Coils are used as
components of circuits, and to provide the magnetic field of motors,
transformers, and generators, and in the manufacture of loudspeakers and
microphones.
New
energy Motor Stator Winding Machine (youtube) -
Small and Medium
Stator Winding and Rewinding (youtube).
Rotating Magnetic Field is a magnetic field that has moving polarities
in which its opposite poles rotate about a central point or axis. Ideally
the
rotation changes direction at a constant angular rate. This is a key
principle in the operation of the alternating-current motor. Rotating
magnetic fields are often utilized for electromechanical applications such
as induction motors and electric generators. However, they are also used
in purely electrical applications such as induction regulators.
Interior Permanent Magnet or IPM is a type
of motor that has a
rotor embedded with permanent
magnets. IPM motors produce torque based on two different
mechanisms. The first is permanent-magnet torque which is generated by the
flux linkage between the PM rotor field and the electro-magnetic field of
the stator. It is the same torque produced by SPM motors. IPM designs
produce a second force known as reluctance torque. The shape and location
of the slots in the rotor laminations are designed to channel magnetic
flux so that even if the slots were left as air gaps, the rotor would
experience a force to align the magnetic flux lines with those generated
by the stator coils. Because those coils are energized in sequence to
create a rotating series of alternating north-south magnetic poles, the
rotor will follow that progression, generating reluctance torque and
causing it to continually turn. Because IPM motor designs augment
permanent magnet torque with reluctance torque, the magnets used in the
motors can be thinner. That's important in the current market. Although
the prices of rare-earth oxides (REOs) have dropped significantly from
their peak in August 2011, rare-earth magnets still represent a
significant cost source in permanent-magnet motor design, so IPM designs
can provide a cost savings. Advantages like near-constant power over a
broad speed range and a magnet-retaining design. Winding designs: Two
common variants of IPM motors are distributed-winding designs and
concentrated-winding designs. A distributed winding design has multiple
coils per magnet pole (24 slots to 4 poles, for example) whereas a
concentrated winding has only a few (6 slots to 4 poles, for example; see
figure 2). Distributed winding designs lend themselves to producing
reluctance torque whereas concentrated windings do not. "Strictly
speaking, it's an interior magnet machine but it turns out that the
magnetics of the motor are designed intentionally to be more like a
surface permanent magnet machine, so for that reason you don't get very
much reluctance torque out of them.
Surface
Permanent Magnet or SPM are synchronous motors with rotating
magnetic fields that have a shape formed by embedding
magnets in the surface of the rotor. They
use the strong magnetism of the magnets for good motor torque linearity
and superior control. Optimizing the magnet shapes provides motors with
low cogging torque.
Reluctance Motor is a type of electric motor that induces
non-permanent magnetic poles on the
ferromagnetic rotor. The rotor does not have any windings. It generates
torque through magnetic reluctance. Reluctance motor subtypes include
synchronous, variable, switched and variable stepping. Reluctance motors
can deliver high power density at low cost, making them attractive for
many applications. Disadvantages include high torque ripple (the
difference between maximum and minimum torque during one revolution) when
operated at low speed, and noise due to torque ripple. Until the early
twenty-first century, their use was limited by the complexity of designing
and controlling them. Advances in theory, computer design tools, and
low-cost embedded systems for control overcame these obstacles.
Microcontrollers use real-time computing control algorithms to tailor
drive waveforms according to rotor position and current/voltage feedback.
Before the development of large-scale integrated circuits, the control
electronics were prohibitively costly.
Synchronous
Reluctance Internal Permanent Magnet Assisted Motor.
How Three Phase
Electricity works - The basics explained (youtube)
Professor Eric
Laithwaite: Motors Big and Small - 1971 (youtube) - Professor Eric
Laithwaite (1921-1997) of Imperial College London demonstrates the
difference between magnetic and electro-magnetic motors. Examples
futuristic - include minute pump that can fit inside human tissue and a
huge test rig to help develop high speed vehicles driven by a linear
motor.
Dynamo is an electrical generator that produces direct
current with the use of a commutator. Dynamos were the first electrical
generators capable of delivering power for industry, and the foundation
upon which many other later electric-power conversion devices were based,
including the electric motor, the alternating-current alternator, and the
rotary converter,
which is a type of electrical machine which acts as a mechanical
rectifier,
inverter
or
frequency converter.
An important class of
direct-current generators are the
dynamos - these are electrical machines with commutators to produce
unidrectional (DC) current, and are self
excited - their field electromagnets are powered by the machine's own
output. Other types of DC generator use a separate source of direct
current to energize their field magnets.
Dynamo Theory proposes a mechanism by which a celestial body such as
Earth or a
Star
generates a magnetic field. The dynamo theory describes the process
through which a
rotating, convecting, and electrically conducting fluid
can maintain a magnetic field over astronomical time scales. A dynamo is
thought to be the source of the
Earth Magnetic Field, as well as the magnetic fields of other planets.
Induction
Generator -
Human
Energy (generator)
DC Motor is any of a
class of rotary electrical machines that converts direct current
electrical energy into mechanical energy. The most common types rely on
the forces produced by
magnetic fields.
Nearly all types of DC motors have some internal mechanism, either
electromechanical or electronic, to periodically change the direction of
current flow in part of the motor.
Shunt DC
Motor connects the armature and field windings in parallel or shunt
with a common D.C. power source.
Series DC
Motor connects the armature and field windings in
series with a common
D.C. power source.
Brushless DC Electric Motor are synchronous motors powered by DC
electricity via an inverter or switching power supply which produces an AC
electric current to drive each phase of the motor via a closed loop
controller. The controller provides pulses of current to the motor
windings that control the speed and torque of the motor. The construction
of a brushless motor system is typically similar to a permanent magnet
synchronous motor (PMSM), but can also be a switched reluctance motor, or
an induction (asynchronous) motor. The advantages of a brushless motor
over brushed motors are high power to weight ratio, high speed, and
electronic control. Brushless motors find applications in such places as
computer peripherals (disk drives, printers), hand-held power tools, and
vehicles ranging from model aircraft to automobiles. (also known as
Brushless DC electric motor (BLDC motors, BL motors) electronically
commutated motors (ECMs, EC motors), or synchronous DC motors).
Brushless DC Motor,
How it works? (youtube)
Induction AC motors may be used as generators, turning mechanical
energy into electric current. Induction generators operate by mechanically
turning their rotor faster than the synchronous speed, giving negative
slip. A regular AC asynchronous motor usually can be used as a generator,
without any internal modifications. Induction generators are useful in
applications such as minihydro power plants, wind turbines, or in reducing
high-pressure gas streams to lower pressure, because they can recover
energy with relatively simple controls. They do not require an exciter
circuit because the rotating magnetic field is provided by induction from
the stator circuit. They also do not require speed governor equipment as
they inherently operate at the connected grid frequency. To operate, an
induction generator must be excited with a leading voltage; this is
usually done by connection to an electrical grid, or sometimes they are
self-excited by using phase correcting capacitors.
Slip Ring Induction
Motor and Squirrel Cage type of Rotor, How it works (youtube) - Slip
Ring has high Starting Torque.
Homopolar Motor is a direct current electric motor with two magnetic
poles, the conductors of which always cut unidirectional lines of magnetic
flux by rotating a conductor around a fixed axis so that the conductor is
at right angles to a static magnetic field. The resulting EMF
(Electromotive Force) being continuous in one direction, the homopolar
motor needs no commutator but still requires slip rings. The name
homopolar indicates that the electrical polarity of the conductor and the
magnetic field poles do not change (i.e., that it does not require
commutation).
Homopolar Generator is a DC electrical generator comprising an
electrically conductive disc or cylinder rotating in a plane perpendicular
to a uniform static magnetic field. A potential difference is created
between the center of the disc and the rim (or ends of the cylinder) with
an electrical polarity that depends on the direction of rotation and the
orientation of the field. It is also known as a unipolar generator,
acyclic generator, disk dynamo, or Faraday disc. The voltage is typically
low, on the order of a few volts in the case of small demonstration
models, but large research generators can produce hundreds of volts, and
some systems have multiple generators in series to produce an even larger
voltage. They are unusual in that they can source tremendous electric
current, some more than a million amperes, because the homopolar generator
can be made to have very low internal resistance.
Variable-Frequency Drive is a type of adjustable-speed drive used in
electro-mechanical drive systems to control AC motor speed and torque by
varying motor input frequency and voltage. VFDs are used in applications
ranging from small appliances to large compressors. About 25% of the
world's electrical energy is consumed by electric motors in industrial
applications, which can be more efficient when using VFDs in centrifugal
load service; however, the global market penetration for all applications
of VFDs is relatively small. Over the last four decades, power electronics
technology has reduced VFD cost and size and has improved performance
through advances in semiconductor switching devices, drive topologies,
simulation and control techniques, and control hardware and software. VFDs
are made in a number of different low- and medium-voltage AC-AC and DC-AC
topologies. Programmable Logic Controller.
Acyclic DC Machine (PDF)
Counter-Electromotive Force is the electromotive force or "voltage"
that opposes the change in current which induced it. CEMF is the EMF
caused by magnetic induction (see Faraday's law of induction,
electromagnetic induction, Lenz's Law). (abbreviated counter EMF or simply
CEMF), also known as back electromotive force (or back EMF).
Mechanical Energy is the sum of
potential energy
and kinetic energy. It is the energy associated
with the motion and position of an object.
Commutator is a moving part of a rotary electrical switch in certain
types of electric motors and electrical generators that periodically
reverses the current direction between the rotor and the external circuit.
It consists of a cylinder composed of multiple metal contact segments on
the rotating armature of the machine. Two or more electrical contacts
called "brushes" made of a soft conductive material like carbon press
against the commutator, making sliding contact with successive segments of the commutator as it rotates. The windings (coils of wire) on the
armature are connected to the commutator segments.
Magnetic Current
a current composed of fictitious moving
magnetic monopoles. It has the dimensions of
volts.
Electromagnet is
a type of magnet in which the magnetic
field is produced by an electric current. The magnetic field
disappears when the current is turned off. Electromagnets usually consist
of a large number of closely spaced turns of wire that create the magnetic
field. The wire turns are often wound around a magnetic core made from a
ferromagnetic or ferrimagnetic material such as iron; the magnetic core
concentrates the magnetic flux and makes a more powerful magnet.
Electric Power is the rate, per unit time, at which
electrical energy is transferred by an electric circuit. The SI unit of
power is the watt, one joule per second. Electric power is usually
produced by electric generators, but can also be supplied by sources such
as electric batteries. It is
usually supplied to businesses and homes by the electric power industry
through an electric power grid. Electric power is
usually sold by the kilowatt hour (3.6 MJ) which is the product of power
in kilowatts multiplied by running time in hours. Electric utilities
measure power using an electricity meter, which keeps a running total of
the electric energy delivered to a customer. Electrical power provides a
low entropy form of energy and can be carried long
distances and converted into other forms of energy such as motion,
light or heat with high energy efficiency.
Electric Power Industry is the generation, transmission, distribution
and sale of electric power to the general public. The electrical industry
started with introduction of electric lighting in 1882. Throughout the 1880s and 1890s, growing economic and safety concerns lead to the
regulation of the industry. Once an expensive novelty limited to the most
densely populated areas, reliable and economical electric power has become
a requirement for normal operation of all elements of developed economies.
Dielectric and Magnetic Discharges in Electrical Windings (complete OCR
remake) (PDF)
Magnetic Generator -
Magnetic Generator
Magnetics
Nanogenerator is a type of technology that converts
mechanical-thermal energy as produced by small-scale physical change into
electricity. Nano-generator has three typical approaches: piezoelectric,
triboelectric, and pyroelectric nanogenerators.
Grids (transmission)
Stirling Engine is a heat engine that operates by cyclic
compression and expansion of air or other gas (the working fluid) at
different temperatures, such that there is a net conversion of
heat energy
to mechanical work. More specifically, the Stirling engine is a
closed-cycle regenerative heat engine with a permanently gaseous working
fluid. Closed-cycle, in this context, means a thermodynamic system in
which the working fluid is permanently contained within the system, and
regenerative describes the use of a specific type of
internal heat
exchanger and thermal store, known as the regenerator. The inclusion of a
regenerator differentiates the Stirling engine from other closed cycle hot
air engines.
Homemade Stirling Engine (youtube) -
Kontax
Stirling Engine -
Youtube
Thermoelectric Generator -
Entropy
Automation Machines -
Water as Fuel - Fuel Systems
Pantone Engine (youtube)
Aluka (youtube channel)
Hydronica Blogspot
EcoMotors is an American company developing and
commercializing an opposed-piston opposed-cylinder (OPOC) engine for use
in cars, light trucks, commercial vehicles, aerospace, marine,
agriculture, auxiliary power units, generators, etc. This engine was
promoted to significantly improve fuel efficiency, and substantially
reduce production costs when compared to convententional internal combustion engines.
Ecomotors.
Maxwell's
Equations are a set of partial
differential equations that, together with the Lorentz force law, form
the foundation of classical electromagnetism, classical optics, and
electric circuits. The equations provide a mathematical model for
electric, optical, and radio technologies, such as power generation,
electric motors, wireless communication, lenses, radar etc. Maxwell's
equations describe how electric and magnetic fields are generated by
charges, currents, and changes of the fields.
Forces.
Lorentz Force is
the combination of electric and magnetic force on a
point charge due to electromagnetic fields.
Excitation. An electric generator or electric motor consists of a
rotor spinning in a magnetic field. The magnetic field may be produced by
permanent magnets or by field coils. In the case of a machine with field
coils, a current must flow in the coils to generate the field, otherwise
no power is transferred to or from the rotor. The process of generating a
magnetic field by means of an electric current is called excitation. Field
coils yield the most flexible form of magnetic flux regulation and
de-regulation, but at the expense of a flow of electric current. Hybrid
topologies exist, which incorporate both permanent magnets and field coils
in the same configuration. The flexible excitation of a rotating
electrical machine is employed by either brushless excitation techniques
or by the injection of current by carbon brushes (static excitation).
Field Coil is an electromagnet used to generate a magnetic field in an
electro-magnetic machine, typically a rotating electrical machine such as
a motor or generator. It consists of a coil of wire through which a
current flows. In a rotating machine, the field coils are wound on an iron
magnetic core which guides the magnetic field lines. The magnetic core is
in two parts; a stator which is stationary, and a rotor, which rotates
within it. The magnetic field lines pass
in a continuous loop or magnetic circuit from the stator through the rotor
and back through the stator again. The field coils may be on the stator or
on the rotor. The magnetic path is characterized by poles, locations at
equal angles around the rotor at which the magnetic field lines pass from
stator to rotor or vice versa. The stator (and rotor) are classified by
the number of poles they have. Most arrangements use one field coil per
pole. Some older or simpler arrangements use a single field coil with a
pole at each end. Although field coils are most commonly found in rotating
machines, they are also used, although not always with the same
terminology, in many other electromagnetic machines. These include simple
electromagnets through to complex lab instruments such as mass
spectrometers and NMR machines. Field coils were once widely used in
loudspeakers before the general availability of lightweight permanent
magnets (see Field coil loudspeaker for more).
Lasers - Amplified Light
Laser is a machine
that makes an amplified,
single-colour source of
light. It uses special
gases or
crystals to make the light with only a single color.
Laser is a device that emits
light through a process of
optical amplification based on the stimulated emission of
electromagnetic radiation.
The gases
are energized to make them emit light. Laser is a device that stimulates
atoms or molecules to emit light at particular wavelengths and amplifies
that
light, typically producing a very narrow beam of radiation. A laser
is created when the
electrons in atoms in special glasses, crystals, or
gases absorb energy from an electrical current or another laser and become
“excited.” The excited electrons move from a lower-energy orbit to a
higher-energy orbit around the atom's nucleus. Then mirrors are used to
amplify (make stronger) the light. In many lasers all the light travels in
one direction, so it stays as a narrow beam of Collimated light that does
not get wider or weaker as most sources of light do. When pointed at
something, this narrow beam makes a single point of
light. The energy of
the light stays in that one narrow beam instead of spreading out like a
flashlight (electric torch). Laser light is different from normal light in
other ways as well. First, its light contains only one wavelength (one
specific color). The particular wavelength of light is determined by the
amount of energy released when the excited electron drops to a lower
orbit. Second, laser light is directional. Whereas a laser generates a
very tight beam, a flashlight produces light that is diffuse. Because
laser light is coherent, it stays focused for vast distances, even to the
moon and back. These photons are all at the same wavelength and are
“coherent,” meaning the crests and troughs of the light waves are all in
lockstep. In contrast, ordinary visible light comprises multiple
wavelengths and is not coherent.
The word "
laser"
is an acronym for "
Light
Amplification by
Stimulated
Emission of
Radiation".
Both the device and its name were developed from the earlier Maser.
Laser Types have many operational wavelengths and applications.
Thousands of kinds of laser are known, but most of them are used only for
specialized research. Lasers are often described by the kind of lasing
medium they use - solid state, gas, excimer, dye, or semiconductor. Solid
state lasers have lasing material distributed in a solid matrix, e.g., the
ruby or neodymium-YAG (yttrium aluminum garnet) lasers. The neodymium-YAG
laser emits infrared light at 1.064 micrometers.
Plasma -
Light
-
LED -
Laserium
(Laser Light Shows)
A Laser is Constructed from three principal parts: An energy source
(usually referred to as the pump or pump source), A gain medium or laser
medium, and Two or more mirrors that form an optical resonator.
Class 4 Lasers are hazardous for eye exposure. They also can burn skin and
materials, especially dark and/or lightweight materials at close range.
Lasers -
Most Powerful Laser -
The Sharpest Laser
in the World
Lawrence Berkeley
Nat. Laboratory
Plasma Acceleration
is a technique for
accelerating charged
particles, such as
electrons,
positrons, and
ions, using the electric
field associated with electron plasma wave or other high-gradient plasma
structures (like shock and sheath fields). The plasma acceleration
structures are created either using ultra-short laser pulses or energetic
particle beams that are matched to the plasma parameters. These techniques
offer a way to build high performance particle accelerators of much
smaller size than conventional devices.
Homemade
40W Laser Shotgun (youtube)
The Extreme World
of Ultra Intense Lasers - with Kate Lancaster - The Royal Institution (youtube)
Stimulated Emission is the process by which an incoming photon of a
specific
frequency can
interact with an excited atomic electron (or other excited molecular
state), causing it to drop to a lower energy level. The liberated energy
transfers to the electromagnetic field, creating a new
photon with a phase, frequency,
polarization, and direction of travel that are all identical to the
photons of the incident wave. This is in contrast to spontaneous emission,
which occurs at random intervals without regard to the ambient
electromagnetic field.
The process is identical in form to atomic absorption in which the energy
of an absorbed photon causes an identical but opposite atomic transition:
from the lower level to a higher energy level. In normal media at thermal
equilibrium, absorption exceeds stimulated emission because there are more
electrons in the lower energy states than in the higher energy states.
However, when a population inversion is present, the rate of stimulated
emission exceeds that of absorption, and a net optical amplification can
be achieved. Such a gain medium, along with an optical resonator, is at
the heart of a laser or maser. Lacking a feedback mechanism, laser
amplifiers and superluminescent sources also function on the basis of
stimulated emission.
Ionization.
Population Inversion occurs while a system (such as a group of
atoms or
molecules) exists in a state in
which more members of the system are in higher, excited states than in
lower, unexcited energy states. It is called an "inversion" because in
many familiar and commonly encountered physical systems, this is not
possible. The concept is of fundamental importance in laser science
because the production of a population inversion is a necessary step in
the workings of a standard laser.
Laser Ablation is the process of removing material from a solid (or
occasionally liquid) surface by irradiating it with a laser beam. At low
laser flux, the material is heated by the absorbed laser energy and
evaporates or sublimates. At high laser flux, the material is typically
converted to a plasma. Usually, laser ablation refers to removing material
with a pulsed laser, but it is possible to ablate material with a
continuous wave laser beam if the laser intensity is high enough. Excimer
lasers of deep ultra-violet light are mainly used in photoablation; the
wavelength of laser used in photoablation is approximately 200 nm.
Fiber
Laser is a laser in which the active gain medium is an
optical fiber
doped with rare-earth elements such as erbium, ytterbium, neodymium,
dysprosium, praseodymium, thulium and holmium. They are related to doped
fiber amplifiers, which provide light amplification without lasing. Fiber
nonlinearities, such as stimulated Raman scattering or four-wave mixing
can also provide gain and thus serve as gain media for a fiber laser.
Natural Resources
Defense Council
Petawatt
Laser -
The Texas Petawatt Laser Facility
Vertical-Cavity Surface-Emitting Laser is a type of semiconductor
laser diode with laser beam emission perpendicular from the top surface,
contrary to conventional edge-emitting semiconductor lasers (also in-plane
lasers) which emit from surfaces formed by cleaving the individual chip
out of a wafer.
We Gather Here Today to Join Lasers and Anti-Lasers
Coherent
Perfect Absorber is a device which absorbs coherent light and converts
it to some form of internal energy such as heat or electrical energy. It
is the time reversed counterpart of a laser.
X-Ray
Laser is a device that uses stimulated emission to generate or amplify
electromagnetic radiation in the near X-ray or extreme ultraviolet region
of the spectrum, that is, usually on the order of several of tens of
nanometers (nm) wavelength. Because of high gain in the lasing medium,
short upper-state lifetimes (1–100 ps), and problems associated with
construction of mirrors that could reflect X-rays, X-ray lasers usually
operate without mirrors; the beam of X-rays is generated by a single pass
through the gain medium. The emitted radiation, based on amplified
spontaneous emission, has relatively low spatial coherence. The line is
mostly Doppler broadened, which depends on the ions' temperature. As the
common visible-light laser transitions between electronic or vibrational
states correspond to energies up to only about 10 eV, different active
media are needed for X-ray lasers. Again, different active media — excited
atomic nuclei — must be used if yet higher frequency, gamma ray lasers are
to be constructed. Between 1978 and 1988 in Project Excalibur the U.S.
military attempted to develop a nuclear explosion-pumped X-ray laser for
ballistic missile defense as part of the "Star Wars" Strategic Defense
Initiative (SDI).
The
Laser: A Light Fantastic - 1967 Documentary - WDTVLIVE42 (youtube)
Optical Cavity is an arrangement of mirrors that forms a standing wave
cavity resonator for
light waves. Optical cavities are a major component
of lasers, surrounding the gain medium and providing feedback of the laser
light. They are also used in optical parametric oscillators and some
interferometers. Light confined in the cavity reflects multiple times
producing standing waves for certain resonance frequencies. The standing
wave patterns produced are called modes; longitudinal modes differ only in
frequency while transverse modes differ for different frequencies and have
different intensity patterns across the cross section of the beam. (also
called an resonating cavity or optical resonator).
First Random Laser Made of Paper-based Ceramics
Laser Projector is a device that projects changing laser beams on a
screen to create a moving image for entertainment or professional use. It
consists of a housing that contains lasers, mirrors,
galvanometer scanners, and other optical components. A laser projector
can contain one laser light source for single-color projection or three
sources for RGB (red, green, and blue) full color projection. Lasers offer
potentially brighter projected images, with more and better colors.
Energy Justice Network
Power &
Energy Society
Energy Leadership
World Energy Summit
Oak Ridge Laboratory
National Energy Lab
Tritium is a radioactive isotope of hydrogen. The nucleus of tritium
(sometimes called a triton) contains one proton and two neutrons, whereas
the nucleus of protium (by far the most abundant hydrogen isotope)
contains one proton and no neutrons. Naturally occurring tritium is
extremely rare on Earth, where trace amounts are formed by the interaction
of the atmosphere with cosmic rays. It can be produced by irradiating
lithium
metal or lithium-bearing ceramic pebbles in a nuclear reactor. Tritium is
used as a radioactive tracer, in radioluminescent light sources for
watches and instruments, and, along with deuterium, as a fuel for nuclear
fusion reactions with applications in energy generation and weapons. The
name of this isotope is derived from Greek, Modern τρίτος (trítos),
meaning 'third'.
Deuterium is one of two stable isotopes of hydrogen (the other being
protium, or hydrogen-1). The nucleus of deuterium, called a deuteron,
contains one proton and one neutron, whereas the far more common protium
has no neutron in the nucleus. Deuterium has a natural abundance in
Earth's Oceans of about one atom in
6420 of hydrogen. Thus deuterium accounts for approximately 0.0156% (or,
on a mass basis, 0.0312%) of all the naturally occurring hydrogen in the
oceans, while protium accounts for more than 99.98%. The abundance of
deuterium changes slightly from one kind of natural water to another.
Electrolaser is a type of electroshock weapon that is also a
directed-energy weapon. It uses lasers to form an electrically conductive
laser-induced plasma channel (LIPC). A fraction of a second later, a
powerful electric current is sent down this plasma channel and delivered
to the target, thus functioning overall as a large-scale, high energy,
long-distance version of the Taser electroshock gun. Alternating current
is sent through a series of step-up transformers, increasing the voltage
and decreasing the current. The final voltage may be between 108 and 109
volts. This current is fed into the plasma channel created by the laser
beam.
Fuel Cells
Fuel Cell is a device that converts the chemical energy from
a fuel into electricity through a
chemical reaction of positively charged
hydrogen ions with
oxygen or another oxidizing agent. Fuel cells are
different from
batteries in requiring a continuous source of fuel and
oxygen or air to sustain the chemical reaction, whereas in a battery the
chemicals present in the battery react with each other to generate an
electromotive force (emf). Fuel cells can produce electricity continuously
for as long as these inputs are supplied.
Fuel Cells -
Bloom Energy Fuel Cells
Microbial Fuel Cell is a
bio-electrochemical
system that drives an electric current by using bacteria and mimicking
bacterial interactions found in nature. MFCs can be grouped into two
general categories: mediated and unmediated.
New battery is activated by your spit. Saliva-powered battery could be
helpful in extreme conditions.
Urine as Fuel (waste energy)
3-D Paper-Based Microbial Fuel Cell
Building a better microbial fuel cell—using paper.
Schematic
illustration of a bioelectrochemical cell incorporating carbon paste
paper electrodes.
Solid Oxide Fuel Cells -
Horizon
Fuel Cell -
Fire
Activated Fuel Cell
Thermoelectric -
Graphene
OWI's
Salt Water Fuel Cell Car - ABC (youtube)
Sun + CO2 + Water = New Liquid Fuel -
CO2 to make fuel
Photoelectrochemical Process are processes in
photoelectrochemistry; they usually involve
transforming light into other forms of energy. These processes apply to
photochemistry, optically pumped lasers, sensitized solar cells,
luminescence, and photochromism.
Helioculture is a company that produces alternative energy
technologies based in Bedford, Massachusetts. The company developed a
process to generate hydrocarbon-based fuel by combining non-fresh water,
nutrients, cyanobacteria, carbon dioxide, and sunlight. The company
planned to break ground in October 2011 on a facility to produce more than
20,000 gallons of fuel per acre per year (19,000 m3/km2·a).
Joule Unlimited
Double Heterostructure is formed when two semiconductor
materials are grown into a "sandwich". One material (such as AlGaAs) is
used for the outer layers (or cladding), and another of smaller band gap
(such as GaAs) is used for the inner layer. In our example, there are two
AlGaAs-GaAs junctions (or boundaries), one at each side of the inner
layer. There must be two boundaries for the device to be a double
heterostructure. If there was only one side of cladding material, the
device would be a simple heterostructure.
Towards effective small scale microbial fuel cells for energy
generation from urine
Stanley Meyer's Water Fuel Cell The fuel cell purportedly split water
into its component elements, hydrogen and oxygen. The hydrogen gas was
then burned to generate energy, a process that reconstituted the water
molecules. According to Meyer, the device required less energy to perform
electrolysis than the minimum energy requirement predicted or measured by
conventional science. The mechanism of action was alleged to involve
"Brown's gas", a mixture of oxyhydrogen with a ratio of 2:1, the same
composition as liquid water; which would then be mixed with ambient air
(nitrogen, oxygen, carbon dioxide, carbon monoxide, methane,
chloroflourocarbons, free radicals/electrons, radiation, among others. If
the device worked as specified, it would violate both the first and second
laws of thermodynamics, allowing operation as a
perpetual motion machine.
Tiny Probe Could Produce Big Improvements in Batteries and Fuel
Cells
Squeezing a Platinum Catalyst a fraction of a nanometer nearly doubles its
Catalytic Activity, finding that could lead to better fuel cells and
other clean energy technologies.
Nano-Alloys are ten times as effective as pure platinum in fuel cells.
Turbocharging fuel cells with a multifunctional catalyst. A
nanoparticle coating turbocharges the processing of oxygen on the cathode
end of solid oxide fuel cells, increasing eightfold current best
performance.
Cheap and Safe Non-Metal Electro-Catalysts for Fuel Cells
Fuel Cells for a
Fraction of the Cost. The development of an inexpensive, efficient
catalyst material for a type of fuel cell called a polymer electrolyte
membrane fuel cell, which turns the chemical energy of hydrogen into
electricity and is among the most promising fuel cell types to power cars
and electronics.
Proton-Exchange Membrane Fuel Cell are a type of fuel cell being
developed mainly for transport applications, as well as for stationary
fuel-cell applications and portable fuel-cell applications. Their
distinguishing features include lower temperature/pressure ranges (50 to
100 °C) and a special proton-conducting polymer electrolyte membrane.
PEMFCs generate electricity and operate on the opposite principle to PEM
electrolysis, which consumes electricity. They are a leading candidate to
replace the aging alkaline fuel-cell technology, which was used in the
Space Shuttle.
UTC Power was a fuel cell company based in South Windsor,
Connecticut. It was part of United Technologies Corporation; it was
purchased by ClearEdge Power in February 2013. The company specialized in
fuel cells for buildings, buses and automobiles. It has also developed
fuel cells for space and submarine applications in the past.
Nanoparticles with multiple elements. As catalysts for fuel cells,
batteries and processes for
carbon dioxide reduction, alloy
nanoparticles that are made up of five or more elements are shown to
be more stable and durable than single-element nanoparticles. The
catalysts in this study are alloy
nanoparticles, or nanosized particles made up of multiple metallic
elements, such as cobalt, nickel, copper and platinum. These nanoparticles
could have multiple practical applications, including water-splitting to
generate hydrogen in fuel cells; reduction of carbon dioxide by capturing
and converting it into useful materials like methanol; more efficient
reactions in biosensors to detect substances in the body; and solar cells
that produce heat, electricity and fuel more effectively.
Activity of Fuel Cell Catalysts Doubled. Modelling leads to the
optimum size for platinum fuel cell catalysts. An interdisciplinary
research team at the Technical University of Munich (TUM) has built
platinum nanoparticles for catalysis in fuel cells: The new size-optimized
catalysts are twice as good as the best process commercially available
today. In fuel cells, hydrogen reacts with oxygen to produce water,
generating electricity in the process. Sophisticated catalysts at the
electrodes are required in order to optimize this conversion. Platinum
plays a central role in the oxygen-reduction reaction.
Nano-Technology -
Batteries
(types) -
Energy from Heat
Catalyst advance could lead to economical Fuel Cells. Researchers have
developed a new way to make low-cost, single-atom catalysts for fuel cells
-- an advance that could make important clean energy technology more
economically viable.
Hydrogen
Hydrogen Fuel is a
zero-emission fuel when burned with oxygen, often uses
electrochemical cells,
or combustion in internal engines, to power vehicles and electric devices.
It is also used in the propulsion of spacecraft and might potentially be
mass-produced and commercialized for passenger vehicles and aircraft.
Hydrogen Future Fuel.
Hydrogen is a
chemical element with chemical symbol H and
atomic number 1. With an atomic weight of 1.00794 u, hydrogen is the
lightest element on the periodic table. Its monatomic form (H) is the
most
abundant chemical substance in the Universe, constituting roughly 75% of
all baryonic mass. Non-remnant stars are mainly composed of hydrogen in
the plasma state. The most common isotope of hydrogen, termed protium
(name rarely used, symbol 1H), has one
proton and no
neutrons. The H atom has an infinite
number of energy levels spanning a finite energy range. This range is 13.6
eV, the ionisation energy, and is equal to the
Rydberg R in energy.
Anti-Hydrogen is
the
antimatter counterpart of hydrogen.
Whereas the common hydrogen atom is composed of an electron and
proton, the antihydrogen atom is made up of a positron and antiproton.
Scientists hope studying antihydrogen may shed light on the question of
why there is more matter than antimatter in the universe, known as the
baryon asymmetry problem.
Hydrogen Ion is
created when a hydrogen atom loses or gains an
electron. A positively charged
hydrogen ion (or proton) can readily combine with other particles and
therefore is only seen isolated when it is in a gaseous state or a nearly
particle-free space. Due to its extremely high charge density of
approximately 2×1010 times that of a sodium ion, the bare hydrogen ion
cannot exist freely in solution as it readily hydrates, i.e., bonds
quickly. The hydrogen ion is recommended by IUPAC as a general term for
all
ions of hydrogen and its isotopes.
Depending on the charge of the ion, two different classes can be
distinguished: positively charged ions and negatively charged ions. A
hydrogen atom is made up of a nucleus with charge +1, and a single
electron. Therefore, the only positively charged ion possible has charge
+1. It is noted H+.
Potential Hydrogen (pH).
Hydrogen Fuel Enhancement is the process of using a mixture of
hydrogen and conventional hydrocarbon
fuel in
an internal
combustion engine, typically in a
car or truck, in an attempt to improve fuel economy, power output,
emissions, or a combination thereof. Methods include hydrogen produced
through an electrolysis, storing hydrogen on the vehicle as a second fuel,
or reforming conventional fuel into hydrogen with a
catalyst.
Oxyhydrogen is a mixture of hydrogen (H2) and oxygen (O2) gases. This
gaseous mixture is used for torches to process refractory materials and
was the first gaseous mixture used for
welding. Theoretically, a ratio
of 2:1 hydrogen: oxygen is enough to achieve maximum efficiency; in
practice a ratio 4:1 or 5:1 is needed to avoid an oxidizing flame.
Scientists have just found a way to make Metallic
Solid Hydrogen in the
lab, by compressing it at ultrahigh pressure between two diamond anvils.
Metallic Hydrogen is a kind of degenerate matter, a phase of hydrogen
in which it behaves like an electrical conductor. At high pressure and
temperatures, metallic hydrogen might exist as a liquid rather than a
solid, and researchers think it is present in large amounts in the hot and
gravitationally compressed interiors of Jupiter, Saturn, and in some
extrasolar planets.
Hydrogen Production is the family of industrial methods for generating
hydrogen. Currently the dominant technology for direct production is steam
reforming from hydrocarbons. Many other methods are known including
electrolysis and thermolysis. In 2006, the United States was estimated to
have a production capacity of 11 million tons of hydrogen. 5 million tons
of hydrogen were consumed on-site in oil refining, and in the production
of ammonia (Haber process) and methanol (reduction of carbon monoxide).
0.4 million tons were an incidental by-product of the chlor-alkali
process. Hydrogen production is an estimated $100 billion industry.
According to the U.S. Department of Energy, 53 million metric tons were
consumed worldwide in 2004. There are no natural hydrogen deposits, and
for this reason the production of hydrogen plays a key role in modern
society. As of 1999, the majority of hydrogen (95%) is produced from
fossil fuels by steam reforming or partial oxidation of methane and coal
gasification with only a small quantity by other routes such as biomass
gasification or electrolysis of water. Around 8GW of electrolysis capacity
is installed worldwide, accounting for around 4% of global hydrogen
production (Decourt et al., 2014). Developing affordable methods for
producing hydrogen with less damage to the environment is a goal of the
hydrogen economy.
Hydrogen Economy is a proposed system of delivering energy using
hydrogen. Proponents of a hydrogen economy advocate hydrogen as a
potential fuel for motive power (including cars and boats) and on-board
auxiliary power, stationary power generation (e.g., for the energy needs
of buildings), and as an energy storage medium (e.g., for interconversion
from excess electric power generated off-peak). Molecular hydrogen of the
sort that can be used as a fuel does not occur naturally in convenient
reservoirs; nonetheless it can be generated by steam reformation of
hydrocarbons, water
electrolysis or by other methods.
Hydrogen and plastic production: New catalyst with a dual function.
Plastic production with this catalyst would be sustainable and would also
enable the creation of hydrogen as a potential energy source.
A New Strategy for Efficient Hydrogen Production. Hybrid-Solid
Electrolysis Cell (Hybrid-SOEC) system with highest reported
electrochemical performance in hydrogen production.
New Materials Could Turn Water into the Fuel of the Future Solar fuels
are created using only
sunlight,
water, and carbon dioxide (
CO2).
Researchers are exploring a range of target fuels, from hydrogen gas to
liquid hydrocarbons, and producing any of these fuels involves splitting
water. Each water molecule is comprised of an oxygen atom and two hydrogen
atoms. The hydrogen atoms are extracted, and then can be reunited to
create highly flammable hydrogen gas or combined with CO2 to create
hydrocarbon fuels, creating a plentiful and renewable energy source. The
problem, however, is that water molecules do not simply break down when
sunlight shines on them—if they did, the oceans would not cover most of
the planet. They need a little help from a solar-powered catalyst. 16
Photoanode Materials.
New Technique for turning Sunshine and Water into Hydrogen Fuel.
Researchers have developed new
photocatalyst
synthesis method using
Magnesium hydride (MgH2) and
Titanium dioxide (TiO2). The result is expected to contribute to
hydrogen mass production through the development of photocatalyst that
reacts to solar light.
Researcher’s Nanomaterial Can Extract Hydrogen Fuel from Seawater
Researchers create Hydrogen Fuel from Seawater. Stanford researchers
have devised a way to generate hydrogen fuel using solar power, electrodes
and saltwater from San Francisco Bay. Negatively charged chloride in
seawater salt can corrode the positive end.
Radio Frequencies can split Oxygen from
Hydrogen in Seawater to make Fuel.
Water as Fuel
Unlocked by Frequency Resonance (youtube) - John Kansas.
Photoelectrochemical Cell are
solar cells that produce electrical energy or hydrogen in a process
similar to the electrolysis of water.
Cold Fusion
Researchers find cheaper way to produce hydrogen from water
Electrocatalytic water splitting using a monolayered double
hydroxide involving nickel and vanadium.
A public
hydrogen filling station opens in London that creates the
gas on site from tap water and renewable energy.
The trouble with Hydrogen:
it’s expensive to harvest, store, and convert it. About 95 percent of
global hydrogen production is done through steam methane reforming (SMR),
blasting natural gas with high-temperature, high-pressure steam. This is
an energy-intensive process that requires fossil fuel inputs and leaves
behind a waste stream of carbon dioxide, so it is of limited use for
decarbonizing the energy system. But it is also possible to pry hydrogen
directly out of water via electrolysis — that’s the process of zapping
water (containing various “electrocatalysts”) with electricity,
stimulating a chemical reaction that splits hydrogen and oxygen. If
electrolysis is run by zero-carbon renewable electricity, the resulting
hydrogen is a zero-carbon fuel. That solves the carbon problem, but there
are others. The hydrogen in water doesn’t really want to let go of the
oxygen (they are “strongly bonded”), so cracking them apart takes quite a
bit of energy. The resulting hydrogen has to be stored, either by
compressing it as a gas with big pumps or by (weakly) bonding it to
something else and storing it as a liquid. That gas or liquid will require
a distribution infrastructure. Finally, the hydrogen has to be extracted
from storage and converted back to energy, either by burning it or putting
it through a fuel cell. By that time, the amount of energy invested in the
process exceeds what can be gotten back out by a wide margin. That’s been
the barrier. When all the costs of the energy conversions are added up,
“mining” hydrogen for use in a zero-carbon energy system has generally
been a money-losing business. The useful services hydrogen provides cannot
compensate for the energy (and money) it takes to produce and use it. At
least not to date.
Infinite chains of hydrogen atoms have surprising properties, including a
metallic phase. An infinite chain of hydrogen atoms is just about the
simplest bulk material imaginable -- a never-ending single-file line of
protons surrounded by electrons. Yet a new computational study combining
cutting-edge methods finds that the material boasts remarkable quantum
properties, including the chain transforming from a magnetic insulator
into a metal. The computational methods used in the study present a
significant step toward custom-designing materials with sought-after
properties, such as high-temperature superconductivity.
Hydrogen Line or 21-centimeter line or H I line is the electromagnetic
radiation spectral line that is created by a change in the energy state of
neutral hydrogen atoms. This electromagnetic radiation is at the precise
frequency of 1,420,405,751.7667±0.0009 Hz, which is equivalent to the
vacuum wavelength of 21.1061140542 cm in free space. This wavelength falls
within the microwave region of the electromagnetic spectrum, and it is
observed frequently in radio astronomy because those radio waves can
penetrate the large clouds of interstellar cosmic dust that are opaque to
visible light. This line is also the theoretical basis of hydrogen maser.
The microwaves of the hydrogen line come from the atomic transition of an
electron between the two hyperfine levels of the hydrogen 1 s ground state
that have an energy difference of ˜ 5.87433 µeV. It is called the
spin-flip transition. The frequency, ?, of the quanta that are emitted by
this transition between two different energy levels is given by the
Planck–Einstein relation E = h?. According to that relation, the photon
energy of a 1,420,405,751.7667 Hz photon is ˜ 5.87433 µeV. The constant of
proportionality, h, is known as the Planck constant.
Spectral Line is a dark or bright line in an otherwise uniform and
continuous
spectrum,
resulting from emission or absorption of light in a narrow frequency
range, compared with the nearby frequencies. Spectral lines are often used
to identify atoms and molecules. These "fingerprints" can be compared to
the previously collected "fingerprints" of atoms and molecules, and are
thus used to identify the atomic and molecular components of stars and
planets, which would otherwise be impossible.
Energy Observer is a
hydrogen vessel
launched in April 2017. Developed in collaboration with engineers from the
CEA-LITEN (fr) the boat will test and prove the efficiency of a full
production chain that relies on the coupling of different renewable
energies. Energy Observer will be the "first hydrogen vessel around the
world". Following its launch, scheduled for winter 2017, the boat will
leave in the Spring for a world tour lasting 6 years in order to optimize
its technologies and lead an expedition that will serve durable solutions for energy transition.
Electrolysis - Water Splitting
Water Splitting is the general term for a
chemical reaction
in which
water is separated into
oxygen and
hydrogen. Efficient and
economical water splitting would be a key technological component of a
hydrogen economy. Various techniques for water splitting have been issued
in water splitting patents in the United States. In
photosynthesis, water
splitting donates electrons to the electron transport chain in photosystem
II.
Solar-Powered Water Splitting is a promising means of Generating Clean and
Storable Energy. A novel catalyst based on semiconductor nanoparticles
has now been shown to facilitate all the reactions needed for '
artificial
photosynthesis'.
Water splitting advance holds promise for affordable renewable energy.
A team has developed a less expensive water electrolysis system that works
under alkaline conditions but still produces hydrogen at comparable rates
to the currently used system that works under acidic conditions and
requires precious metals. This advance brings down the cost of water
splitting technology, offering a more viable way to store energy from
solar and wind power in the form of hydrogen fuel.
Electrolysis is a technique that uses a
direct electric current (DC)
to drive an otherwise non-spontaneous
chemical reaction. Electrolysis is commercially important as a stage
in the separation of elements from naturally occurring sources such as
ores using an
electrolytic cell. The voltage that is needed for
electrolysis to occur is called the decomposition potential. The key
process of electrolysis is the interchange of
atoms and
ions by the removal or
addition of electrons from the external circuit. The desired products of
electrolysis are often in a different physical state from the electrolyte
and can be removed by some physical processes.
Electrolysis of Water
is the decomposition of
water (H2O) into
oxygen (O2) and hydrogen gas (H2)
due to an
electric current being passed through the water. The reaction
has a standard potential of −1.23 V, meaning it ideally requires a
potential difference of 1.23 volts to split water. This technique can be
used to make hydrogen fuel (hydrogen gas) and breathable oxygen; though
currently most industrial methods make hydrogen fuel from natural gas
instead.
Breathable Air for Space Travel.
Solid Oxide Electrolyzer Cell is a solid oxide
fuel cell that runs in regenerative mode to achieve the electrolysis
of water (and/or carbon dioxide) by using a solid oxide, or ceramic,
electrolyte to produce hydrogen gas (and/or carbon monoxide) and oxygen.
The production of pure hydrogen is compelling because it is a clean fuel
that can be stored easily, thus making it a potential alternative to
batteries, which have a low
storage capacity and create high amounts of waste materials. Electrolysis
is currently the most promising method of hydrogen production from water
due to high efficiency of conversion and relatively low required energy
input when compared to thermochemical and photocatalytic methods.
Ultrasonic Electrolysis: This design may enable cars to run on water -
HHO
Electrocatalyst is
a
catalyst that participates in
electrochemical reactions.
Catalyst materials modify and increase the rate of chemical reactions
without being consumed in the process. Electrocatalysts are a specific
form of catalysts that function at electrode surfaces or may be the
electrode surface itself. An electrocatalyst can be heterogeneous such as
a platinum surface or nanoparticles, or homogeneous like a coordination
complex or
enzyme. The electrocatalyst assists in
transferring electrons
between the electrode and reactants, and/or facilitates an intermediate
chemical transformation described by an overall half-reaction.
Fuel Cells.
Fusion - Cold Fusion - Fire from Water
Cold Fusion is a hypothesized type of
nuclear reaction that
would occur at, or near, room temperature. This is compared with the "
hot"
fusion which takes place naturally within stars, under immense pressure
and at
temperatures of millions of degrees, and distinguished from muon-catalyzed
fusion. There is currently no accepted theoretical model that would allow
cold fusion to occur.
Quantum Mechanics.
Cold Fusion: Fire
From Water 1/6 (youtube)
Cold
Fusion Infinite Energy -
Cold Fusion Energy Science
Energy Catalyzer is claimed to be a cold fusion reactor.
E Cat
Fusion Power is energy generated by
nuclear fusion. Fusion
reactions fuse two lighter atomic nuclei to form a heavier nucleus. It is
a major area of
plasma physics research that attempts to harness such
reactions as a source of large scale sustainable energy. Fusion reactions
are how stars transmute matter into energy.
SPARC is a tokamak that has been proposed for construction by
Commonwealth Fusion Systems (CFS) in collaboration with the Massachusetts
Institute of Technology (MIT) Plasma Science and Fusion Center (PSFC),
with funding from Eni, Breakthrough Energy Ventures, Khosla Ventures,
Temasek, Equinor, Devonshire Investors, and others.
Tokamak
is a device which uses a powerful magnetic field to confine a hot plasma
in the shape of a torus. The tokamak is one of several types of magnetic
confinement devices being developed to produce controlled thermonuclear
fusion power. As of 2016, it is the leading candidate for a practical
fusion reactor.
SPARC is planned to be the first experimental device ever to achieve a
'burning plasma' -- a self-sustaining fusion reaction in which
different isotopes of the element hydrogen fuse together to form helium,
without the need for any further input of energy.
General Fusion,
more than 50 scientists and engineers are world leaders in fusion
technology, with expertise across
plasma physics, computer simulation and
engineering. Hydrogen atoms fused together using extreme high temperatures
from compressing plasma. Creating clean, safe, sustainable energy.
Fusion is a
nuclear reaction in which
nuclei combine to form more massive
nuclei with the simultaneous release
of energy. The state of being combined into one body.
Nuclear Fusion is a reaction in which two or more
atomic
nuclei come close enough to form one or more different atomic nuclei and
subatomic particles (neutrons and/or protons). The difference in mass
between the products and reactants is manifested as the release of large
amounts of energy. This difference in mass arises due to the difference in
atomic "binding energy" between the atomic nuclei before and after the
reaction. Fusion is the process that powers active or "main sequence"
Stars, or other high magnitude stars. Nuclear
fusion converts hydrogen atoms into helium.
Nucleosynthesis is the process that creates new atomic nuclei from
pre-existing nucleons, primarily protons and neutrons.
Stellar Nucleosynthesis is the process by which the natural abundances
of the chemical elements within stars change due to nuclear fusion
reactions in the cores and their overlying mantles. Stars are said to
evolve (age) with changes in the abundances of the elements within. Core
fusion increases the atomic weight of elements and reduces the number of
particles, which would lead to a pressure loss except that gravitation
leads to contraction, an increase of temperature, and a balance of forces.
A star loses most of its mass when it is ejected late in the star's
stellar lifetimes, thereby increasing the abundance of elements heavier
than helium in the interstellar medium. The term
supernova nucleosynthesis is used to describe the creation of elements
during the evolution and explosion of a presupernova star.
Primordial black holes may have helped to forge heavy elements -
Big Bang
Nucleosynthesis (wiki)
Thermonuclear Fusion
is a way to achieve nuclear fusion by using extremely high temperatures.
There are two forms of thermonuclear fusion: uncontrolled, in which the
resulting energy is released in an uncontrolled manner, as it is in
thermonuclear weapons such as the "hydrogen bomb" and in stars and brown
dwarves (not sub-brown dwarves) and controlled, where the fusion reactions
take place in an environment allowing some of the resulting energy to be
harnessed for constructive purposes. This article focuses on the latter.
Laser-Heated Nanowires produce micro-scale Nuclear Fusion.
Proton-Proton Chain Reaction is one of two known sets of nuclear
fusion reactions by which stars convert
hydrogen
to helium. It dominates in stars with masses less than or equal to that of
the Sun, whereas the CNO cycle, the other known reaction, is suggested by
theoretical models to dominate in stars with masses greater than about 1.3
times that of the Sun. In general, proton–proton fusion can occur only if
the
kinetic energy (i.e. temperature) of the
protons is high enough to overcome their mutual electrostatic repulsion.
In the Sun, deuterium-producing events are rare. Diprotons are the much
more common result of proton–proton reactions within the star, and
diprotons almost immediately decay back into two protons. Since the
conversion of hydrogen to helium is slow, the complete conversion of the
hydrogen in the core of the Sun is calculated to take more than ten
billion years. Although called the "proton–proton chain reaction", it is
not a chain reaction in the normal sense. In most nuclear reactions, a
chain reaction designates a reaction that produces a product, such as
neutrons given off during fission, that quickly induces another such
reaction. The proton-proton chain is, like a decay chain, a series of
reactions. The product of one reaction is the starting material of the
next reaction. There are two such chains leading from Hydrogen to Helium
in the Sun. One chain has five reactions, the other chain has six. (p-p
chain).
CNO
Cycle is one of the two known sets of fusion
reactions by which stars
convert hydrogen to helium, the other being the proton–proton chain
reaction (p-p cycle), which is more efficient at the Sun's core
temperature. The CNO cycle is hypothesized to be dominant in stars that
are more than 1.3 times as massive as the Sun. Unlike the proton-proton
reaction, which consumes all its constituents, the CNO cycle is a
catalytic cycle. In the CNO cycle, four protons fuse, using carbon,
nitrogen, and oxygen isotopes as catalysts, each of which is consumed at
one step of the CNO cycle, but re-generated in a later step. The end
product is one alpha particle (a stable helium nucleus), two positrons,
and two electron neutrinos.
Mass can Neither be Created nor
Destroyed?
Fission is a
nuclear reaction in which a
massive
nucleus splits into smaller
nuclei with the simultaneous release
of energy.
Nuclear Fission is either a nuclear reaction or a
radioactive decay process in which the nucleus of an atom splits into
smaller parts (lighter nuclei). The fission process often produces free
neutrons and gamma photons, and releases a very large amount of energy
even by the energetic standards of radioactive decay.
Polywell
is a type of
nuclear fusion reactor that uses an electric field to heat
ions to fusion conditions. It is closely related to the fusor, the high
beta fusion reactor, the magnetic mirror, and the biconic cusp. A set of
electromagnets generates a magnetic field that traps electrons. This
creates a negative voltage, which attracts positive ions. As the ions
accelerate towards the negative center, their kinetic energy rises. Ions
that collide at high enough energies can fuse. The polywell is one of many
devices that use an electric field to heat ions to fusion conditions. This
branch of fusion research is known as inertial electrostatic confinement.
The polywell was developed by physicist Robert Bussard, as an improvement
over the fusor. His company, EMC2, Inc., developed prototypical devices
for the U.S. Navy.
Water Splitting.
Sonoluminescence is the emission of short bursts of
light from imploding bubbles in a
liquid when excited by
sound.
How to predict crucial plasma pressure in future fusion facilities.
Photo Electrochemical Water Split.
New model considers an extra factor to improve our prediction of nuclear
fission. An improved model for predicting the generation of thermal
energy from nuclear fission processes, by focusing on Uranium-236. This
model can help improve efficiency in nuclear power generation.
In the
fission of a U-235 nucleus, some of the energy of the color fields inside
its protons and neutrons is released, with potentially explosive
consequences. In the proton–proton chain involving the fusion of four
protons, the conversion of two up quarks into two down quarks, forming two
neutrons in the process, results in the release of a little excess energy
from its color fields. Mass does not convert to energy. Energy is instead
passed from one kind of quantum field to another.
Powder, not gas: A safer, more effective way to create a star on Earth.
Scientists have found that sprinkling a type of powder into fusion plasma
could aid in harnessing the ultra-hot gas within a tokamak facility to
produce heat to create electricity without producing greenhouse gases or
long-term radioactive waste.
Isotopes of Hydrogen has three naturally occurring isotopes,
sometimes denoted 1H, 2H, and 3H. The first two of these are stable while
3H has a half-life of 12.32 years. All heavier isotopes are synthetic and
have a half-life less than one zeptosecond (10−21 second). Of these, 5H is
the most stable, and 7H is the least.
Hydrogen
Energy
Magnetic Confinement Fusion is an approach to generating
fusion power that uses
magnetic fields
(which is a magnetic influence of electric currents and magnetic
materials) to confine the hot fusion fuel in the form of a plasma.
Magnetic confinement is one of two major branches of fusion energy
research, the other being inertial confinement fusion. The magnetic
approach is more highly developed and is usually considered more promising
for energy production.
Plasma Physics is one of the
four
fundamental states of matter, the others being solid, liquid, and gas.
A plasma has properties unlike those of the other states.
Plasmas -
Lasers -
Coulter Smithing
Cavitation -
Implosion
Developing Nuclear Fusion in a Basement with a Reclusive
Gunsmith (youtube)
Magnetized Target Fusion combines features of magnetic
confinement fusion (MCF) and inertial confinement fusion (ICF). Like the
magnetic approach, the fusion fuel is confined at lower density by
magnetic fields while it is heated into a plasma. As with the inertial
approach, fusion is initiated by rapidly squeezing the target to greatly
increase fuel density and temperature. Although the resulting density is
far lower than in ICF, it is thought that the combination of longer
confinement times and better heat retention will let MTF operate, yet be
easier to build. The term magneto-inertial fusion (MIF) is similar, but
encompasses a wider variety of arrangements. The two terms are often
applied interchangeably to experiments.
Steven Cowley: Fusion is Energy's Future (video)
Perpetual Motion -
emc2
Joint
European Torus
ITER Project
"The Way"
Culham
Centre Fusion Energy
Z
Machine -
K Star -
Focus Fusion
BBC Horizon: Can we Make a Star on Earth (youtube)
Lattice Confinement Fusion is fusion reactions with the fuel
deuterium, a widely available
non-radioactive hydrogen isotope composed of a proton, neutron, and
electron, and denoted “D”, confined in the space between the atoms of a
metal solid.
Deuterium is one of two stable isotopes of hydrogen with the other
being protium, or hydrogen-1. The nucleus of a deuterium atom, called a
deuteron, contains one proton and one neutron, whereas the far more common
protium has no neutrons in the nucleus. Deuterium has a natural abundance
in Earth's oceans of about one atom in 6420 of hydrogen. Thus deuterium
accounts for approximately 0.02% (0.03% by mass) of all the naturally
occurring hydrogen in the oceans, while protium accounts for more than
99.98%. The abundance of deuterium changes slightly from one kind of
natural water to another. (deuterium or hydrogen-2, symbol 2H or D, also
known as heavy hydrogen).
Water as a Fuel
Water-Fuelled
Car is an automobile that hypothetically derives its energy directly
from
water. Water-fuelled cars have been the subject of numerous
international patents, newspaper and popular science magazine articles,
local television news coverage, and websites. The claims for these devices
have been found to be pseudoscience and some were found to be tied to
investment frauds. These vehicles may be claimed to produce fuel from
water on board with no other energy input, or may be a hybrid claiming to
derive some of its energy from water in addition to a conventional source
(such as gasoline). Water is fully oxidized hydrogen. Hydrogen itself is a
high-energy, flammable substance, but its useful energy is released when
water is formed. Water will not burn. The process of
electrolysis can
split water into hydrogen and oxygen, but it takes as much energy to take
apart a water molecule as was released when the hydrogen was oxidized to
form water. In fact, some energy would be lost in converting water to
hydrogen and then burning the hydrogen because some waste heat would
always be produced in the conversions. Releasing chemical energy from
water, in excess or in equal proportion to the energy required to
facilitate such production, would therefore violate the first or
second
law of thermodynamics.
Water Fuel Cell -
Water 4 Gas -
Water Powered Car
Water Spark Plugs (youtube) -
Inventor Jailed for making this video? (youtube)
Water car inventor murdered after turning down a
billion dollars to sell patent.
Ogle Fuel System -
Vapor Fuel System
Hydronica Blogspot -
Aluka -
Opel Test Car
Build a Gas Vaporizer -
Gas Engine Vaporizer
Fuel Vaporizers (youtube) -
Fuel Vaporizing System -
Fuel Vaporizer for Lawn Mower (youtube)
Engines (types) -
Perpetual -
SkyActiv -
Zero Emissions.
Natural Gas
Natural Gas is a naturally occurring
hydrocarbon gas mixture consisting
primarily of
methane,
but commonly including varying amounts of other higher alkanes, and
sometimes a small percentage of
carbon dioxide,
nitrogen, hydrogen sulfide, or helium. It is formed when layers of
decomposing plant and animal matter are exposed to intense heat and
pressure under the surface of the Earth over millions of years. The energy
that the plants originally obtained from the sun is stored in the form of
chemical bonds in the gas.
Air Pollution -
Carbon Capture -
Earth Temperatures Rising.
Methane
Maps (hazardous leaks) -
New Study first to Predict which Oil and Gas Wells are Leaking Methane.
Hydraulic Fracturing is a well stimulation technique in
which rock is fractured by a pressurized liquid. The process involves the
high-pressure injection of 'fracking fluid' (primarily water, containing
sand or other proppants suspended with the aid of thickening agents) into
a wellbore to create cracks in the deep-rock formations through which
natural gas, petroleum, and brine will flow more freely. When the
hydraulic pressure is removed from the well, small grains of hydraulic
fracturing proppants (either sand or aluminium oxide) hold the fractures
open.
Films
about Fracking -
Environmental Awareness
EPA Finds Oil and Gas Industries Are Spewing More Methane Than
Thought,
sources and sinks of greenhouse gases.
Assessment of Methane Emissions from the U.S. oil and gas supply chain.
U.S. oil and gas operations are
60 percent higher
than previous estimates from the federal government. Enough natural gas to
power 10 million homes for an entire year.
Colorado becomes First State
To Restrict Methane Emissions, which is a powerful
greenhouse gas.
Extensive research effort tackles methane leaks. Better
information enables data-driven solutions to dangerous climate
risk.
A
Bridge to Clean Energy? Or just more criminal greed and
corruption?
Free Gas Forever,
Tell Everyone! (youtube) - Using Saltwater and
Radio Frequency Generator
Bio Gas (waste energy) -
Green Products
Methane Clathrate is a solid clathrate compound (more
specifically, a clathrate hydrate) in which a large amount of methane is
trapped within a crystal structure of water, forming a solid similar to
ice. Originally thought to occur only in the outer regions of the Solar
System, where temperatures are low and water ice is common, significant
deposits of methane clathrate have been found under sediments on the ocean
floors of the Earth.
Methane Hydrates.
Natural Gas-burning stoves and furnaces found in millions of US
kitchens and basements can produce a range of health-damaging pollutants,
including
particulate matter
(PM), nitrogen dioxide (NO2),
carbon monoxide
(CO), and formaldehyde. Over the past four decades, researchers have
amassed a large body of scientific evidence linking the use of gas
appliances, especially for cooking, with a higher risk of a range of
respiratory problems and illnesses.
Plastics - Materials
Bioplastic are plastics derived from renewable
biomass sources, such as vegetable fats and oils, corn starch, or
microbiota. Bioplastic can be made from agricultural by-products and also
from used
plastic bottles and other containers using microorganisms.
Common plastics, such as fossil-fuel plastics (also called petrobased
polymers), are derived from petroleum or natural gas. Production of such
plastics tends to require more fossil fuels and to produce more greenhouse
gases than the production of biobased polymers (bioplastics). Some, but
not all, bioplastics are designed to biodegrade.
Biodegradable bioplastics
can break down in either
anaerobic or aerobic environments, depending on
how they are manufactured. Bioplastics can be composed of starches,
cellulose, biopolymers, and a variety of other materials.
Composite Material.
Biopolymer are polymers produced by living
organisms; in other
words, they are polymeric
biomolecules.
Since they are polymers, biopolymers contain monomeric units that are
covalently bonded to form larger structures. There are three main classes
of biopolymers, classified according to the monomeric units used and the
structure of the biopolymer formed: polynucleotides (RNA and DNA), which
are long polymers composed of 13 or more nucleotide monomers;
polypeptides, which are short polymers of amino acids; and
polysaccharides, which are often linear bonded polymeric carbohydrate
structures. Other examples of biopolymers include rubber, suberin, melanin
and lignin. Cellulose is the most common organic compound and biopolymer
on Earth. About 33 percent of all plant matter is cellulose. The cellulose
content of cotton is 90 percent, for wood it is 50 percent.
Materials Science.
Polymer
a substance that has a molecular structure consisting chiefly or entirely
of a large number of similar units bonded together, e.g., many synthetic
organic materials used as plastics and resins. Polymers range from
familiar synthetic plastics such as polystyrene to natural biopolymers
such as DNA and proteins that are fundamental to biological structure and
function. Polymers, both natural and synthetic, are created via
polymerization of many small molecules, known as monomers. Their
consequently large molecular mass relative to small molecule compounds
produces unique physical properties, including toughness, viscoelasticity,
and a tendency to form glasses and semicrystalline structures rather than
crystals.
New
Polymer Manufacturing Process saves 10 orders of magnitude of Energy.
Researchers have developed a new polymer-curing process that could reduce
the cost, time and energy needed, compared with the current manufacturing
process. This development marks what could be the first major advancement
to the high-performance polymer and composite manufacturing industry in
almost half a century.
Biodegradable Plastic are plastics that
decompose by the
action of living organisms, usually bacteria.
Aircarbon Thermoplastic -
Plastic Molding -
Outgassing (voc's)
Epoxy Compound gets a Graphene bump. Scientists combine graphene foam,
epoxy into tough, conductive composite.
Micro-Mechanics of Failure aims to explain the failure of continuous
fiber reinforced composites by
micro-scale analysis of stresses within each constituent material
(such as fiber and matrix), and of the stresses at the interfaces between
those constituents, calculated from the macro stresses at the ply level.
Plastic Dangers (garbage waste pollution) -
Bio-Mimicry
-
Meta-Materials.
Plastic is material
consisting of any of a wide range of synthetic or semi-synthetic organic
compounds that are malleable and so can be molded into solid objects.
Plastic Roads.
Green Plastic production made easy. A one-step method enables scalable
and more environmentally friendly production of
plant-derived plastic
monomers, paving the way towards the mass production of a sustainable
alternative to petroleum-based materials. Biobased plastics are emerging
as a next generation material and are expected to replace
petroleum-derived
plastics. A plant-derived polyester, called
polyethylene furanoate (PEF), is a promising 100% renewables-based
polymer derived from plants that can replace the giant of the plastic
industry, polyethylene terephthalate (PET), due to its better physical,
mechanical and thermal properties. However, realizing large-scale PEF
production is seriously hampered by an inefficient production of the
monomers. Aerobic oxidation of a biomass-derived substrate called HMF in
methanol and ethylene glycol produces monomers called MFDC and HEFDC,
respectively. They are recognized as crucial monomers in the manufacture
of PEF, because polymerization of MFDC with ethylene glycol or
self-condensation of HEFDC can yield high-quality PEF.
Nanocellulose is
nano-structured
cellulose nanofibers material composed of nanosized cellulose fibrils with
a high aspect ratio (length to width ratio). Typical fibril widths are
5–20 nanometers with a wide range of lengths, typically several
micrometers. It is pseudo-plastic and exhibits thixotropy, the
property of certain gels or fluids that are thick (viscous) under normal
conditions, but become less viscous when shaken or agitated. When the
shearing forces are removed the gel regains much of its original state.
The fibrils are isolated from any cellulose containing source including
wood-based fibers (pulp fibers) through high-pressure, high temperature
and high velocity impact homogenization, grinding or microfluidization
(see manufacture below). Nanocellulose can also be obtained from native
fibers by an acid hydrolysis, giving rise to highly crystalline and rigid
nanoparticles (often referred to as CNC or nanowhiskers) which are shorter
(100s to 1000 nanometers) than the nanofibrils obtained through
homogenization, microfluiodization or grinding routes. The resulting
material is known as nanocrystalline cellulose (NCC or CNC).
Bio-Mimicry.
Cellulose is an
important structural component of the primary cell wall of green plants,
many forms of algae and the oomycetes. Some species of bacteria secrete it
to form biofilms. Cellulose is the most abundant organic polymer on Earth.
The cellulose content of cotton fiber is 90%, that of wood is 40–50%, and
that of dried
hemp is approximately
57%.
Fibre-Reinforced Plastic is a composite material
made of a polymer matrix reinforced with fibres. The fibres are usually
glass, carbon, aramid, or basalt. Rarely, other fibres such as paper or
wood or asbestos have been used. The polymer is usually an epoxy,
vinylester or polyester thermosetting plastic; and phenol formaldehyde
resins are still in use.
Wood-Plastic Composite are composite materials made of wood fiber/wood
flour and thermoplastic(s) (includes PE, PP, PVC, PLA etc.). In addition
to wood fiber and plastic, WPCs can also contain other ligno-cellulosic
and/or inorganic filler materials. WPCs are a subset of a larger category
of materials called natural fiber plastic composites (NFPCs), which may
contain no cellulose-based fiber fillers such as pulp fibers, peanut
hulls, bamboo, straw, digestate, etc. Chemical additives seem practically
"invisible" (except mineral fillers and pigments, if added) in the
composite structure. They provide for integration of polymer and wood
flour (powder) while facilitating optimal processing conditions. In recent
years, people in the flooring industry starts referring to WPC as a type
of floor that has a basic structure of top vinyl veneer plus a rigid
extruded core (the core can be made without any wood fiber). WPC is now an
established product category within LVT. This type of WPC is different
than the WPC decking and is not intended for outdoor usage.
Bioinspired Polymeric Woods provide bioinspiration for engineering
materials due to their superior mechanical performance. We demonstrate a
novel strategy for large-scale fabrication of a family of bioinspired
polymeric woods with similar polyphenol matrix materials, wood-like
cellular microstructures, and outstanding comprehensive performance by a
self-assembly and thermocuring process of traditional resins. In contrast
to natural woods, polymeric woods demonstrate comparable mechanical
properties (a compressive yield strength of up to 45 MPa), preferable
corrosion resistance to acid with no decrease in mechanical properties,
and much better thermal insulation (as low as ~21 mW m-1 K-1) and fire
retardancy. These bioinspired polymeric woods even stand out from other
engineering materials such as cellular ceramic materials and aerogel-like
materials in terms of specific strength and thermal insulation properties.
The present strategy provides a new possibility for mass production of a
series of high-performance biomimetic engineering materials with
hierarchical cellular microstructures and remarkable multifunctionality.
Carbon Fiber - Composites
Carbon Fiber
are
fibers about 5–10 micrometres in diameter and
composed mostly of
carbon atoms.
Carbon Fibers
have several advantages including high stiffness, high tensile strength,
low weight, high chemical resistance, high temperature tolerance and low
thermal expansion. These properties have made carbon fiber very popular in
aerospace, civil engineering, military, and motorsports, along with other
competition sports. However, they are relatively expensive when compared
with similar fibers, such as glass fibers or plastic fibers. To produce a
carbon fiber, the carbon atoms are bonded together in crystals that are
more or less aligned parallel to the long axis of the fiber as the crystal
alignment gives the fiber high strength-to-volume ratio (in other words,
it is strong for its size). Several thousand carbon fibers are bundled
together to form a tow, which may be used by itself or woven into a
fabric. Carbon fibers are usually combined with other materials to form a
composite. When impregnated with a plastic resin and baked it forms
carbon-fiber-reinforced polymer (often referred to as carbon fiber) which
has a very high strength-to-weight ratio, and is extremely rigid although
somewhat brittle. Carbon fibers are also composited with other materials,
such as graphite, to form reinforced carbon-carbon composites, which have
a very high heat tolerance.
Carbon Nano-Tubes -
Carbon Fiber Recycle -
CFRP -
Making Carbon-fiber
Composite Material is a material
made from two or
more constituent materials with significantly different physical or
chemical properties that, when combined, produce a material with
characteristics different from the individual components.
Graphene
-
Nano-Graphene
Make Your Own Carbon Fiber Parts (youtube) -
How to make a two-part Mold (youtube)
Carbon-Fiber Reinforced Polymer is an extremely
strong and
light fiber-reinforced plastic which contains carbon fibers.
CFRPs can be expensive to produce but are commonly used wherever high
strength-to-weight ratio and rigidity are required, such as aerospace,
automotive, civil engineering, sports goods and an increasing number of
other consumer and technical applications. The binding polymer is often
a thermoset resin such as epoxy, but other thermoset or thermoplastic
polymers, such as polyester, vinyl ester or nylon, are sometimes used. The
composite may contain other fibers, such as an aramid (e.g. Kevlar, Twaron),
aluminium, ultra-high-molecular-weight polyethylene (UHMWPE) or glass
fibers, as well as carbon fiber. The properties of the final CFRP product
can also be affected by the type of additives introduced to the binding
matrix (the resin). The most frequent additive is silica, but other
additives such as rubber and carbon nanotubes can be used. The material is
also referred to as graphite-reinforced polymer or graphite
fiber-reinforced polymer (GFRP is less common, as it clashes with
glass-(fiber)-reinforced polymer). In product advertisements, it is
sometimes referred to simply as graphite fiber for short.
Kevlar
is a heat-resistant and strong
synthetic
fiber, related to other aramids such as Nomex and Technora. Developed
by Stephanie Kwolek at DuPont in 1965, this high-strength material was
used first commercially in the early 1970s as a replacement for steel in
racing tires. Typically it is spun into ropes or fabric sheets that can be
used as such or as an ingredient in composite material components. Kevlar
has many applications, ranging from bicycle tires and racing sails to
bulletproof vests, because of its high tensile strength-to-weight ratio;
by this measure it is five times stronger than steel. It also is used to
make modern marching drumheads that withstand high impact. When used as a
woven material, it is suitable for mooring lines and other underwater
applications. A similar fiber called Twaron with the same chemical
structure was developed by Akzo in the 1970s; commercial production
started in 1986, and Twaron is now manufactured by Teijin.
Injection Molding -
Tools -
Action Physics
Bakelite is an early plastic. It is a thermosetting
phenol formaldehyde resin, formed from a condensation reaction of phenol
with formaldehyde.
Venturi.
Q-carbon is an allotrope of carbon that is
ferromagnetic, electrically conductive, and glows when exposed to low
levels of energy. It is relatively inexpensive to make, and some news
reports claim that it has replaced diamond as the world's hardest
substance. Discovered in 2015.
A Team At MIT Has
Developed A Super Light Weight Material Ten Times Stronger Than Steel
(youtube)
Carbon fiber technology that extracts CO2 from the air
and turns it into cars and other industrial products.
Polyvinylidene Fluoride (wiki)
Paint made from
coated titanium dioxide nanoparticles
makes tough self-cleaning surfaces.
Nano-Technology
Syntactic Foam are composite materials synthesized
by filling a metal, polymer, or ceramic matrix with hollow particles
called microballoons. In this context, "syntactic" means "put together".
The presence of hollow particles results in lower density, higher specific
strength (strength divided by density), lower coefficient of thermal
expansion, and, in some cases, radar or sonar transparency.
Glass Microsphere are microscopic spheres of glass
manufactured for a wide variety of uses in research, medicine, consumer
goods and various industries. Glass microspheres are usually between 1 and
1000 micrometers in diameter, although the sizes can range from 100
nanometers to 5 millimeters in diameter. Hollow glass microspheres,
sometimes termed microballoons or glass bubbles, have diameters ranging
from 10 to 300 micrometers.
Viscoelasticity
is the property of materials that exhibit both
viscous and
elastic
characteristics when undergoing deformation. Viscous materials, like
honey, resist shear flow and strain linearly with time when a stress is
applied. Elastic materials strain when stretched and quickly return to
their original state once the stress is removed. Viscoelastic materials
have elements of both of these properties and, as such, exhibit
time-dependent strain. Whereas elasticity is usually the result of bond
stretching along crystallographic planes in an ordered solid, viscosity is
the result of the diffusion of atoms or molecules inside an amorphous
material.
Aquatherm polypropylene (PP-R) pipe for use in pressurized plumbing
and mechanical systems of all sizes. Our products are reliable,
competitively priced, and environmentally friendly.
Polypropylene is a thermoplastic
polymer used in a wide variety of
applications including packaging and labeling, textiles (e.g., ropes,
thermal underwear and carpets), stationery, plastic parts and reusable
containers of various types, laboratory equipment, loudspeakers,
automotive components, and polymer banknotes. An addition polymer made
from the monomer propylene, it is rugged and unusually resistant to
many chemical solvents, bases and acids. Polypropylene has a relatively
slippery "low energy surface" that means that many common glues will not
form adequate joints. Joining of polypropylene is often done using welding
processes. In 2013, the global market for polypropylene was about 55
million tonnes. Polypropylene is the world's second-most widely produced
synthetic plastic, after polyethylene.
Green Catalysts with
Earth-abundant metals accelerate production of bio-based plastic. How
crystalline structure can affect the
performance of MnO2 catalysts. Scientists have developed and analyzed a
novel catalyst for the oxidation of
5-hydroxymethyl furfural, which is crucial for generating new raw
materials that replace the classic non-renewable ones used for making many
plastics.
Fuel Cells -
Rubber Tires made from Dandelions.
Green Catalysts are the
catalysts which are
eco friendly
that can be regenerated hence reused multiple times and thus minimise
waste production during process. A catalyst is defined as “a substance
that changes the velocity of a reaction without itself being changed in
the process”.
Nuclear Testing
All people who were born since 1951 have received some exposure to
Radiation from
Weapons Testing-Related Fallout.
An equivalent of 29,000 of the bombs dropped on Hiroshima—428
megatons—were added to the air through
Nuclear Testing.
U.S. Government
Radiological Weapons Program sprayed, injected and fed radiation and
other dangerous materials to Innocent Americans in secret. They also
worked to develop radiological weapons and later "combination weapons"
using radioactive materials along with chemical or
biological weapons.
Toxins -
Half-Life.
Radiation Poisoning and Sickness is a collection of health effects
that are present within 24 hours of exposure to high doses of ionizing
radiation. The onset and type of symptoms depend on the amount of
radiation exposure, both in any one dose, and cumulative exposure.
Relatively smaller doses result in gastrointestinal effects, such as
nausea and vomiting, and symptoms related to falling blood counts, and
predisposition to infection and bleeding. Relatively larger doses can
result in neurological effects, including but not limited to seizures,
tremors, lethargy, and rapid death. Treatment of acute radiation syndrome
is generally supportive with blood transfusions and antibiotics, with some
extreme cases requiring more aggressive treatments, such as bone marrow
transfusions. The radiation causes cellular degradation due to
Damage to
DNA and other key molecular structures within the cells in various
tissues. This destruction, particularly because it
affects the ability of
cells to divide normally, in turn causes the symptoms. The symptoms can
begin within one hour and may last for several months. The terms refer to
acute medical problems rather than ones that develop after a prolonged
period. Similar symptoms may appear months to years after exposure as
chronic radiation syndrome when the dose rate is too low to cause the
acute form. Radiation exposure can also increase the probability of
developing some other diseases, mainly different types of
cancers. These
later-developing diseases are sometimes also described as radiation
sickness, but they are never included in the term acute radiation
syndrome.
Radiation Therapy.
New way to protect against high-dose radiation damage discovered.
Increases in levels of the protein URI protect mice against high-dose
ionizing radiation-induced gastrointestinal syndrome and enhance mouse
intestinal regeneration and survival in 100 percent of the cases.
New Nuclear Reactors.
New biomaterial could shield against harmful radiation. New form of
melanin has ability to protect human tissue from X-rays during medical
treatment, spaceflight. Researchers have synthesized a new form of melanin
enriched with selenium. Called selenomelanin, this new biomaterial shows
extraordinary promise as a shield for human tissue against harmful
radiation.
Body Armor Grown in a Lab? Why Not, Say Synthetic Biologists.
Nuclear Weapon is an
explosive device
that derives its destructive force from nuclear reactions, either fission
(fission bomb) or from a combination of fission and fusion reactions
(thermonuclear bomb). Both bomb types release large quantities of energy
from relatively small amounts of matter. The first test of a
fission ("atomic") bomb released an amount of energy
approximately equal to 20,000 tons of TNT (84 TJ). The first thermonuclear
("hydrogen") bomb test released energy approximately equal to 10 million
tons of TNT (42 PJ). A thermonuclear weapon weighing little more than
2,400 pounds (1,100 kg) can release energy equal to more than 1.2 million
tons of TNT (5.0 PJ). A nuclear device no larger than traditional bombs
can devastate an entire city by blast, fire, and radiation. Since they are
weapons of mass destruction,
the proliferation of nuclear weapons is a focus of international relations
policy. (also called an atom bomb, nuke, atomic bomb, nuclear warhead,
A-bomb, or nuclear bomb).
Nuclear
Fallout is the residual radioactive material propelled into the upper
atmosphere following a nuclear blast, so called because it "falls out" of
the sky after the explosion and the shock wave have passed. It commonly
refers to the radioactive dust and ash created when a nuclear weapon
explodes. The amount and spread of fallout is a product of the size of the
weapon and the altitude at which it is detonated. Fallout may get
entrained with the products of a pyrocumulus cloud and fall as black rain
(rain darkened by soot and other particulates). This radioactive dust,
usually consisting of fission products mixed with bystanding atoms that
are neutron activated by exposure, is a highly dangerous kind of
radioactive contamination.
Doomsday -
Nuclear and Radiation Accidents and Incidents (wiki).
Effects of Nuclear Explosions.
The energy released from a nuclear weapon detonated in the troposphere can
be divided into four basic categories: Blast—40–50% of total energy.
Thermal radiation—30–50% of total energy. Ionizing radiation—5% of total
energy (more in a neutron bomb). Residual radiation—5–10% of total energy
with the mass of the explosion.
Teapot Apple 2 Cue
houses atomic bomb effects Colorized by DeOldify (youtube).
How to Dismantle a Nuclear Bomb. Testing a new method for verification
of weapons reduction. The experiments consisted of sending a horizontal
neutron beam first through a proxy of the warhead, then through a lithium
filter scrambling the information. The beam's signal was then sent to a
glass detector, where a signature of the data, representing some of its
key properties, was recorded. The MIT tests were performed using
molybdenum and tungsten, two metals that share significant properties with
plutonium and served as viable proxies for it.
Sievert is a derived
unit of ionizing radiation dose in the
International System of Units (SI) and is a measure of the health
effect of low levels of
ionizing radiation on the human body. The sievert is of fundamental
importance in
dosimetry and
radiation protection, and is named after Rolf Maximilian Sievert, a
Swedish medical physicist renowned for work on radiation dose measurement
and research into the biological effects of
radiation. Quantities that are measured in sieverts are intended to
represent the
stochastic health risk, which for radiation dose assessment
is defined as the probability of cancer induction and genetic damage. One sievert carries with it a 5.5% chance of eventually developing
cancer based on the linear
no-threshold model. To enable consideration of stochastic health risk,
calculations are performed to convert the physical quantity
absorbed dose
into equivalent and effective doses, the details of which depend on the
radiation type and biological context. For applications in radiation
protection and dosimetry assessment the
International Commission on
Radiological Protection (ICRP) and
International Commission on Radiation
Units and Measurements (ICRU) have published recommendations and data
which are used to calculate these. These are under continual review, and
changes are advised in the formal "Reports" of those bodies. The
sievert is used for radiation dose quantities such as
equivalent dose and
effective dose, which represent the risk of external radiation from
sources outside the body, and
committed dose which represents the risk of
internal irradiation due to inhaled or ingested radioactive substances.
Conventionally, the sievert is not used for high dose rates of radiation
that produce deterministic effects, which is the severity of acute tissue
damage that is certain to happen; such effects are compared to the
physical quantity absorbed dose measured by the unit gray (Gy). One
sievert equals 100 rem. The rem is an older, non-SI unit of measurement.
To enable a comprehensive view of the sievert this article deals with the
definition of the sievert as an SI unit, summarises the recommendations of
the ICRU and ICRP on how the sievert is calculated, includes a guide to
the effects of ionizing radiation as measured in sieverts, and gives
examples of approximate figures of dose uptake in certain situations.
Rad Unit is a deprecated unit of absorbed
Radiation dose, defined as 1 rad = 0.01
Gy = 0.01 J/kg. It was originally defined in CGS units in 1953 as the dose
causing 100 ergs of energy to be absorbed by one gram of matter. It has
been replaced by the gray in SI but is still used in the United States,
though "strongly discouraged" in the chapter 5.2 of style guide for U.S.
National Institute of Standards and Technology authors. A related unit,
the roentgen, is used to quantify the radiation exposure. The F-factor can
be used to convert between rads and roentgens. The material absorbing the
radiation can be human tissue or silicon microchips or any other medium
(for example, air, water, lead shielding, etc.).
Absorbed Dose is a physical
dose quantity D representing the
mean energy imparted to matter per unit mass by ionizing radiation. In the
SI system of units, the unit of measure is joules per kilogram, and its
special name is gray (Gy). The non-SI CGS unit rad is sometimes also used,
predominantly in the USA.
Body Burden.
Equivalent Dose is a
dose quantity H representing the stochastic
health effects of low levels of ionizing radiation on the human body. It
is derived from the physical quantity absorbed dose, but also takes into
account the biological effectiveness of the radiation, which is dependent
on the radiation type and energy. In the SI system of units, the unit of
measure is the sievert (Sv).
Effective Dose in Radiation is the tissue-weighted sum of the
equivalent doses in all specified tissues and organs of the human body and
represents the stochastic health risk to the whole body, which is the
probability of cancer induction and genetic effects, of low levels of
ionising radiation. It takes into account the type of radiation and the
nature of each organ or tissue being irradiated, and enables summation of
organ doses due to varying levels and types of radiation, both internal
and external, to produce an overall calculated effective dose. The SI unit
for effective dose is the sievert (Sv) which represents a 5.5% chance of
developing cancer. The effective dose is not intended as a measure of
deterministic health effects, which is the severity of acute tissue damage
that is certain to happen, that is measured by the quantity absorbed dose.
Committed Dose in radiological protection is a measure of the
stochastic health risk due to an intake of radioactive material into the
human body. Stochastic in this context is defined as the probability of
cancer induction and genetic damage, due to low levels of radiation. The
SI unit of measure is the sievert. A committed dose from an internal
source represents the same effective risk as the same amount of effective
dose applied uniformly to the whole body from an external source, or the
same amount of equivalent dose applied to part of the body. The committed
dose is not intended as a measure for deterministic effects such as
radiation sickness which is defined as the severity of a health effect
which is certain to happen. The radiation risk proposed by the
International Commission on Radiological Protection (ICRP) predicts that
an effective dose of one sievert carries a 5.5% chance of developing
cancer. Such a risk is the sum of both internal and external radiation
dose.
Barn
unit is a unit of area equal to 10−28 m2 (100 fm2). Originally used in
nuclear physics for expressing the cross sectional area of nuclei and
nuclear reactions, today it is also used in all fields of high-energy
physics to express the cross sections of any scattering process, and is
best understood as a measure of the probability of interaction between
small particles. A barn is approximately the cross-sectional area of a
uranium nucleus. The barn is also the unit of area used in nuclear
quadrupole resonance and nuclear magnetic resonance to quantify the
interaction of a nucleus with an electric field gradient. While the barn
is not an SI unit, the SI standards body acknowledges its existence due to
its continued use in particle physics.
Banana Equivalent Dose is an informal measurement of ionizing
radiation exposure, intended as a general educational example to compare a
dose of radioactivity to the dose one is exposed to by eating one
average-sized banana. Bananas contain naturally occurring radioactive
isotopes, particularly potassium-40 (40K), one of several
naturally-occurring isotopes of potassium. One BED is often correlated to
10-7 Sievert (0.1 µSv); however, in practice, this dose is not cumulative,
as the principal radioactive component is excreted to maintain metabolic
equilibrium. The BED is only meant to inform the public about the
existence of very low levels of natural radioactivity within a natural
food and is not a formally adopted dose.
Linear no-threshold Model is a model used in radiation
protection to quantify radiation exposure and set regulatory limits. It
assumes that the long term, biological damage caused by ionizing radiation
(essentially the cancer risk) is directly proportional to the dose. This
allows the summation by dosimeters of all radiation exposure, without
taking into consideration dose levels or dose rates. In other words,
radiation is always considered harmful with no safety threshold, and the
sum of several very small exposures are considered to have the same effect
as one larger exposure (response linearity).
Radiation Hormesis is the hypothesis that low doses of
ionizing radiation (within the region
of and just above natural background levels) are beneficial, stimulating
the activation of repair mechanisms that protect against disease, that are
not activated in absence of ionizing radiation. The reserve repair
mechanisms are hypothesized to be sufficiently effective when stimulated
as to not only cancel the detrimental effects of ionizing radiation but
also inhibit disease not related to radiation exposure (see hormesis).
This counter-intuitive hypothesis has captured the attention of scientists
and public alike in recent years.
Potassium iodide is a chemical compound, medication, and dietary
supplement. As a medication it is used to treat
hyperthyroidism, in radiation emergencies, and to protect the thyroid
gland when certain types of radiopharmaceuticals are used. In the
developing world it is also used to treat skin sporotrichosis and
phycomycosis. As a supplement it is used in those who have low intake of
iodine in the diet. It is given by mouth. Common side effects include
vomiting, diarrhea, abdominal pain, rash, and swelling of the salivary
glands. Other side effects include allergic reactions, headache, goitre,
and depression. While use during pregnancy may harm the baby, its use is
still recommended in radiation emergencies. Potassium iodide has the
chemical formula KI. Commercially it is made by mixing potassium hydroxide
with iodine. Potassium iodide has been used medically since at least 1820.
It is on the World Health Organization's List of Essential Medicines, the
most effective and safe medicines needed in a health system. Potassium
iodide is available as a generic medication and over the counter. In the
United States a course of treatment is less than US$25. Potassium iodide
is also used for the iodization of salt.
Iodine is a chemical
element with the symbol I and atomic number 53. The heaviest of the stable
halogens, it exists as a lustrous, purple-black non-metallic solid at
standard conditions that melts to form a deep violet liquid at 114 degrees
Celsius, and boils to a violet gas at 184 degrees Celsius.
Iodised Salt is
table salt mixed with a minute amount of various salts of the element
iodine. The ingestion of iodine prevents iodine deficiency. Worldwide,
iodine deficiency affects about two billion people and is the leading
preventable cause of intellectual and developmental disabilities.
Deficiency also causes thyroid gland problems, including "endemic goitre".
In many countries, iodine deficiency is a major public health problem that
can be cheaply addressed by purposely adding small amounts of iodine to
the sodium chloride salt. Iodine is a micronutrient and dietary mineral
that is naturally present in the food supply in some regions, especially
near sea coasts, but is generally quite rare in the Earth's crust, since
iodine is a so-called heavy element, and abundance of chemical elements
generally declines with greater atomic mass. Where natural levels of
iodine in the soil are low and the iodine is not taken up by vegetables,
iodine added to salt provides the small but essential amount of iodine
needed by humans. An opened package of table salt with iodide may rapidly
lose its iodine content through the process of oxidation and iodine sublimation.
There's still fall out from Nuclear Weapons out there.
Dirty Bombs -
Toxins
War Waste - A
Ticking Bomb for the Environment | DW Documentary (youtube) - Million
tons of bombs were disposed in the oceans with highly toxic substances
containing arsenic. 100's of dump sites around the world. Agent orange is
still
toxic and extremely
dangerous. Dupleted uranium will continue to be a threat for over 4
billion years.
Pollution.
Most
Radioactive Places In The World (youtube) Mediterranean Sea, Somalia,
Hanford Sight, Mayak Russia, Sellafield England (Irish Sea), Siberia
Russia, Mailuu-suu Kyrgyzstan, Polygon Kazakhstan, Chernobyl, Fukushima
Japan.
Level 7 event classification.
USSR Secretly Conducted over 400 Nuclear Tests in a region of
Kazakhstan called "The Polygon", exposing hundreds of thousands
of people to dangerous levels of radiation. Now over 200,000
people are believed to have suffered directly from the tests.
The
Comprehensive Nuclear-Test-Ban Treaty.
Forgotten Bomb -
Hulu
02/07/2015 | 1 hr. 34 min.
The Decision to Use the Atomic Bomb and the Architecture of an
American Myth (amazon)
Gar Alperovitz (wiki)
United Nations Institute for Disarmament Research
Plough Shares is a public
grantmaking foundation that
supports initiatives
to prevent the spread and use of nuclear, biological and chemical weapons
and other weapons of war, and to prevent conflicts that could lead to the
use of
weapons of mass destruction.
Ploughshares
Fund (wiki).
Society Collapse
(doomsday) -
An
Illusion of Safety (TSA)
Sandia National
Laboratories mission responsibilities in the nuclear weapons (NW)
program create a foundation from which we leverage capabilities, enabling
us to solve complex national security problems.
Radon is a
radioactive gas. It is colorless,
odorless, tasteless, and chemically inert. Unless you test for it, there
is no way of telling how much is present.
Radon is formed by the
natural radioactive decay of uranium in rock, soil, and water. Naturally
existing, low levels of uranium occur widely in Earth's crust. It can be
found in all 50 states. Once produced, radon moves through the ground to
the air above. Some remains below the surface and dissolves in water that
collects and flows under the ground's surface. Radon has a
half-life of about four days—half of a given
quantity of it breaks down every four days. When radon undergoes
radioactive decay, it emits ionizing radiation in the form of alpha
particles. It also produces short-lived decay products, often called
progeny or daughters, some of which are also radioactive. Unlike radon,
the progeny are not gases and can easily attach to dust and other
particles. Those particles can be transported by air and can also be
breathed. The decay of progeny continues until stable, non-radioactive
progeny are formed. At each step in the decay process, radiation is
released. Radon is a chemical element with the symbol Rn and atomic number
86. It is a radioactive, colorless, odorless, tasteless noble gas. It
occurs naturally in minute quantities as an intermediate step in the
normal radioactive decay chains through which thorium and uranium slowly
decay into lead and various other short-lived radioactive elements. Radon
itself is the immediate decay product of radium. Its most stable isotope,
222Rn, has a half-life of only 3.8 days, making it one of the rarest
elements. Since thorium and uranium are two of the most common radioactive
elements on Earth, while also having three isotopes with half-lives on the
order of several billion years, radon will be present on Earth long into
the future despite its short half-life. The decay of radon produces many
other short-lived nuclides, known as radon daughters, ending at stable
isotopes of lead.
Body Burden -
Toxins.
Picocurie is a unit of measurement of radioactivity, equal to one
trillionth (10-12) of a curie – that's 1/1,000,000,000,000 of a curie. A
picocurie represents about 0.037 disintegrations per second or 2.22
disintegrations per minute (of radioactive decay).
Radiation Detection
Radiation Detector is a device used to detect, track, and/or identify
ionizing particles, such as those produced
by nuclear decay, cosmic radiation, or reactions in a particle
accelerator. Detectors can measure the particle energy and other
attributes such as momentum, spin, charge, particle type, in addition to
merely registering the presence of the
particle.
Geiger Counter
is an instrument used for detecting and measuring ionizing radiation. Also
known as a Geiger–Muller counter (or Geiger–Müller counter), it is widely
used in applications such as radiation dosimetry, radiological protection,
experimental physics, and the nuclear industry. It detects ionizing
radiation such as alpha particles, beta particles, and gamma rays using
the ionization effect produced in a Geiger–Müller tube, which gives its
name to the instrument. In wide and prominent use as a hand-held radiation
survey instrument, it is perhaps one of the world's best-known radiation
detection instruments. The original detection principle was realized in
1908, at the Victoria University of Manchester, but it was not until the
development of the Geiger–Müller tube in 1928 that the Geiger counter
could be produced as a practical instrument. Since then, it has been very
popular due to its robust sensing element and relatively low cost.
However, there are limitations in measuring high radiation rates and the
energy of incident radiation
Gamma Counter is
a machine to measure gamma radiation emitted by a radionuclide. Unlike
survey meters, gamma counters are designed to measure small samples of
radioactive material, typically with automated measurement and movement of
multiple samples.
Scintillation Counter is an instrument for detecting and measuring
ionizing radiation by using the excitation effect of incident radiation on
a scintillating material, and detecting the resultant light pulses. It
consists of a scintillator which generates photons in response to incident
radiation, a sensitive photodetector (usually a photomultiplier tube
(PMT), a charge-coupled device (CCD) camera, or a photodiode), which
converts the light to an electrical signal and electronics to process this
signal. Scintillation counters are widely used in radiation protection,
assay of radioactive materials and physics research because they can be
made inexpensively yet with good quantum efficiency, and can measure both
the intensity and the energy of incident radiation.
Scintillator is a
material that exhibits scintillation, the property of luminescence,
when excited by ionizing radiation. Luminescent materials, when struck by
an incoming particle, absorb its energy and scintillate (i.e. re-emit the
absorbed energy in the form of light).[a] Sometimes, the excited state is
metastable, so the relaxation back down from the excited state to lower
states is delayed (necessitating anywhere from a few nanoseconds to hours
depending on the material). The process then corresponds to one of two
phenomena: delayed fluorescence or phosphorescence. The correspondence
depends on the type of transition and hence the wavelength of the emitted
optical photon.
Particle
Detector is a device used to detect, track, and/or identify ionizing
particles, such as those produced by nuclear decay, cosmic radiation, or
reactions in a particle accelerator. Detectors can measure the particle
energy and other attributes such as momentum, spin, charge, particle type,
in addition to merely registering the presence of the particle.
Nuclear Forensics is the investigation of nuclear materials to find
evidence for the source, the trafficking, and the enrichment of the
material. The material can be recovered from various sources including
dust from the vicinity of a nuclear facility, or from the radioactive
debris following a nuclear explosion. Results of nuclear forensic testing
are used by different organizations to make decisions. The information is
typically combined with other sources of information such as law
enforcement and intelligence information.
Chernobyl: Two Days in the Exclusion Zone (youtube)
Radiation Dose in X-Ray and CT Exams. X-rays are
a form of energy, similar to light and
radio waves. X-rays are also called
radiation. Unlike light waves, x-rays have enough energy to pass through
your body. As the
radiation moves
through your body, it passes through bones, tissues and organs
differently, which allows a radiologist to create pictures of them. The
radiologist views these images on photographic film or on monitors similar
to a computer display.
Reducing Radiation from Medical X-rays (FDA) -
Imaging Machines
Dental X-Rays: The upside is that an X-ray
allows your dentist to see bones, tissue, and hidden surfaces of your
teeth that he or she can't see with the naked eye. The downside is that
X-rays expose you to radiation. Four bitewing X-rays, which is what many
people get in a routine exam, give about .005 millisieverts of radiation,
according to the American College of Radiology. That's about the same
amount of radiation you get in a normal day from the sun and other
sources. A panoramic dental X-ray, which goes around your head, has about
twice that amount of radiation. Dental x-rays are one of the lowest
radiation dose studies performed. A routine exam which includes 4
bitewings is about 0.005 mSv, which is less than one day of natural
background radiation. It is also about the same amount of radiation
exposure from a short airplane flight (~1-2 hrs).
Radiation Risk
Calculator -
Cell Phone Radiation.
Radiation-Induced Cancer or invasive
cancers are related to radiation
exposure, including both ionizing radiation and
non-ionizing radiation.
RadNet has more
than 130 radiation air monitors in 50 states. RadNet runs 24 hours a day,
7 days a week collecting near-real-time measurements of gamma radiation.
Over time, RadNet sample testing and monitoring results reveal the normal
background levels of environmental
radiation.
Radiation
Protection is the protection of people from harmful effects of
exposure to ionizing radiation, and the means for achieving this. Exposure
can be from a radiation source external to the human body or due to the
bodily intake of a radioactive material. Ionizing radiation is widely used
in industry and medicine, and can present a significant health hazard by
causing microscopic damage to living tissue. This can result in skin burns
and radiation sickness at high exposures, known as "tissue" or
"deterministic" effects (conventionally indicated by the gray), and
statistically elevated risks of cancer at low exposures, known as
"stochastic effects" (conventionally measured by the sievert).
Workers in hospitals and nuclear facilities can wear disposable yeast
badges to check their daily radiation exposure instantly. Hospital lab
workers better track their daily radiation exposure, enabling a faster
assessment of tissue damage that could lead to cancer.
The Fogging of Photographic Film by Radioactive Contaminants in
Cardboard Packaging Materials..
Sr-90 is
a radioactive isotope of strontium produced by nuclear fission, with a
half-life of 28.8 years. It undergoes β− decay into yttrium-90, with a
decay energy of 0.546 MeV. Strontium-90 has applications in medicine and
industry and is an isotope of concern in fallout from nuclear weapons and
nuclear accidents.
Iodine-131 is an important radioisotope of iodine discovered
by Glenn Seaborg and John Livingood in 1938 at the University of
California, Berkeley. It has a radioactive decay half-life of about eight
days. It is associated with nuclear energy, medical diagnostic and
treatment procedures, and natural gas production. It also plays a major
role as a radioactive isotope present in nuclear fission products, and was
a significant contributor to the health hazards from open-air atomic bomb
testing in the 1950s, and from the Chernobyl disaster, as well as being a
large fraction of the contamination hazard in the first weeks in the
Fukushima nuclear crisis. This is because I-131 is a major fission product
of uranium and plutonium, comprising nearly 3% of the total products of
fission (by weight). See fission product yield for a comparison with other
radioactive fission products. I-131 is also a major fission product of
uranium-233, produced from
thorium.
Isotopes of Ruthenium (44Ru) is composed of seven stable isotopes.
Additionally, 27 radioactive isotopes have been discovered. Of these
radioisotopes, the most stable are 106Ru, with a half-life of 373.59 days;
103Ru, with a half-life of 39.26 days and 97Ru, with a half-life of 2.9
days. Twenty-four other radioisotopes have been characterized with atomic
weights ranging from 86.95 u (87Ru) to 119.95 u (120Ru). Most of these
have half-lives that are less than five minutes, excepting 95Ru
(half-life: 1.643 hours) and 105Ru (half-life: 4.44 hours). The primary
decay mode before the most abundant isotope, 102Ru, is electron capture
and the primary mode after is beta emission. The primary decay product
before 102Ru is technetium and the primary product after is rhodium.
Open Burns = Open Wounds
Depleted Uranium is uranium with a lower content of the
fissile isotope U-235 than natural uranium. (Natural uranium contains
about 0.72% of its fissile isotope U-235, while the DU used by the U.S.
Department of Defense contain 0.3% U-235 or less). Uses of DU take
advantage of its very high density of 19.1 g/cm3 (68.4% denser than lead).
Civilian uses include counterweights in aircraft, radiation shielding in
medical radiation therapy and industrial radiography equipment, and
containers for transporting radioactive materials. Military uses include
armor plating and
armor-piercing
projectiles.
Veterans Exposed -
Born at
the Burnt Land (youtube) -
Article
War Crimes (radioactive waste)
How NATO Turned
Sardinia Into A Radioactive Nightmare (youtube) - Secret Sardinia: The
island of Sardinia is home to two completely different worlds. On the one
side sits the villas of the super-rich, with coastal mansions valued in
the hundreds of millions. Yet on the other sits Europe's largest military
exercise ground, where amour piercing uranium-tipped missiles were tested
by the thousand. Now, a disproportionate number of cancers and children
and livestock born with hideous deformities have led to accusations of a
cover up as to the extent of NATO's polluting of the island.
Radioactive Waste - Poisonous for Hundreds of Years
Bio-Persistent is a substance that remains inside a biological
organism, rather than being expelled or broken down like a
biodegradable product does.
Plastics are Biopersistent.
Biological Half-Life of a biological substance is the time it takes
for half to be removed by biological processes when the rate of removal is
roughly exponential.
Entropy -
Decomposition -
Dormancy -
Forever Chemicals -
Toxic Waste
Effective Half-Life is the rate of accumulation or elimination of a
biochemical or
pharmacological substance in an organism; the analogue of
biological half-life when the kinetics are governed by multiple
independent mechanisms.
Contaminated Water.
Half-Life
is the time required for a quantity to reduce to half its initial value.
The term is commonly used in
nuclear physics to describe how quickly
unstable atoms undergo, or how long stable atoms survive,
radioactive
decay. The term is also used more generally to characterize any type of
exponential or non-exponential decay. For example, the medical sciences
refer to the biological half-life of drugs and other chemicals in the
human body. The converse of half-life is doubling time. Half-life is
constant over the lifetime of an exponentially decaying quantity, and it
is a characteristic unit for the exponential decay equation.
Plutonium-239 has a Half-Life of 24,000 years.
Strontium-90 and cesium-137 have half-lives of about 30 years.
Radioactive Isotopes by Half-Life (wiki) -
Half-Life Calculator -
Safecast
Decay is the spontaneous disintegration of
a
radioactive substance along with the
emission of ionizing radiation.
Radioactive Decay is the process by which an unstable atomic nucleus
loses energy by
emitting radiation,
such as an alpha particle, beta particle with neutrino or only a neutrino
in the case of electron capture, or a gamma ray or electron in the case of
internal conversion. A material containing such unstable nuclei is
considered
radioactive. Certain highly
excited short-lived nuclear states can decay through neutron emission, or
more rarely, proton emission. (in terms of mass in its rest frame).
Nuclear Regulatory Commission.
Radioactive Waste is waste that contains
radioactive
material. Radioactive waste is usually a by-product of nuclear power
generation and other applications of nuclear fission or nuclear
technology, such as research and medicine. Radioactive waste is hazardous
to all forms of life and the environment, and is regulated by government
agencies in order to protect human health and the environment.
Radioactivity naturally decays over time, so radioactive waste has to be
isolated and confined in appropriate disposal facilities for a sufficient
period until it no longer poses a threat. The time radioactive waste must
be stored for depends on the type of waste and radioactive isotopes.
Current approaches to managing radioactive waste have been segregation and
storage for short-lived waste, near-surface disposal for low and some
intermediate level waste, and deep burial or partitioning / transmutation
for the high-level waste. A summary of the amounts of radioactive waste
and management approaches for most developed countries are presented and
reviewed periodically as part of the International Atomic Energy Agency (IAEA)
Joint Convention on the Safety of Spent Fuel Management and on the Safety
of Radioactive Waste Management.
This Concrete Dome
holds a Leaking Toxic Timebomb (youtube) - Thousands of cubic metres
of radioactive waste lies buried under a concrete dome on the Enewetak
Atoll in the Marshall Islands, the legacy of over a decade of US nuclear tests in the Pacific.
This
Abandoned Nuclear City Is Trapped Under Ice, What Happens when It Thaws?
(youtube) - Camp Century, Greenland has tons of nuclear waste from a
secret military operation.
High-Level Nuclear Waste Repository Project at Yucca Mountain.
Deep Geological Repository is a nuclear waste repository excavated
deep within a stable geologic environment (typically below 300 m or 1000
feet). It entails a combination of waste form, waste package, engineered
seals and geology that is suited to provide a high level of long-term
isolation and containment without future maintenance. The Waste Isolation
Pilot Plant, under construction in the United States, is currently the
only facility which retains high level nuclear waste for permanent
disposition.
Beta
Decay is a type of radioactive decay in which a beta ray (fast
energetic electron or positron) is emitted from an atomic nucleus.
Radioactive Decay (space)
Particle Decay is the spontaneous process of one unstable subatomic
particle transforming into multiple other particles. The particles created
in this process (the final state) must each be less massive than the
original, although the total invariant mass of the system must be
conserved. A particle is unstable if there is at least one allowed final
state that it can decay into. Unstable particles will often have multiple
ways of decaying, each with its own associated probability. Decays are
mediated by one or several fundamental forces. The
particles in the final state may
themselves be unstable and subject to further decay. The term is typically
distinct from radioactive decay, in which an unstable atomic nucleus is
transformed into a lighter nucleus accompanied by the emission of
particles or radiation, although the two are conceptually similar and are
often described using the same terminology.
Exponential Decay decreases at a rate proportional to its current
value.
Urban
Decay is the sociological process by which a
previously functioning city,
or part of a city, falls into disrepair and decrepitude.
Social
Decay refers to a perceived decay in standards, morals, dignity,
religious faith, or skill at governing among the members of the elite of a
very large social structure, such as an empire or nation state.
Forgotten wrecks
are a time bomb | DW Documentary (youtube) - Time bombs are ticking on
the world’s sea beds. During World War II,
6,300
vessels were sent to the bottom. For years, they have been rusting
beneath the waves and leaking toxic oil into the oceans. The biggest oil
spill in history is imminent. Experts estimate that the wrecks could hold
up to
15 million tons of fuel, posing a
threat to both holidaymakers and wildlife. This documentary takes viewers
to Poland’s Baltic coast, to Norway, the USA and the Pacific Ocean. It
accompanies scientists who are investigating how heavily the seabed has in
some places already been contaminated by leaking oil, observing the
rotting wrecks, developing danger scenarios and issuing warnings: the oil
from several sunken ships urgently needs to be pumped out. There is still
time to safely dispose of the sea’s "black tears." But, despite all the
warnings, so far very few governments are prepared to take action.
Although pumping out the wrecks is technically possible, it would be a
complex and expensive process. But we are at the start of a critical
phase. After decades of corrosion in salty seawater, sometimes the
slightest vibration is enough to cause the steel hulls of the sunken
warships to split open. Marine researchers, coastguards and salvage
experts worldwide agree the question is not if, but when, further massive
oil spills from World War II wrecks will cause an environmental disaster.
Land Mines.
Time
Bomb is a bomb whose detonation is triggered by a
timer. The use or attempted use of time
bombs has been for various purposes including insurance fraud, terrorism,
assassination, sabotage and warfare.
Negligence.
40,000,000 Total acres of land — an area larger than the state of Florida
— the EPA estimates has been contaminated by the Pentagon or its
contractors in the U.S. open burns.
42 billion
dollars spent cleaning up its 39,400 polluted sites by the Pentagon
so far in the U.S.. ProPublica reviewed records for the 51 active burn
sites and more than 145 others the Pentagon, its contractors, and other
private companies operated in the past, and found they had violated their
hazardous waste handling permits thousands of times over the past 37
years, often for improperly storing and disposing of toxic material, and
sometimes for exceeding pollution thresholds.
Radioactive Contamination
is the deposition of, or presence of radioactive substances on surfaces or
within solids, liquids or gases (including the human body), where their
presence is unintended or undesirable (from the International Atomic
Energy Agency - IAEA - definition). Such contamination presents a hazard
because of the radioactive decay of the contaminants, which emit harmful
ionising radiation such as alpha particles or beta particles, gamma rays
or neutrons. The degree of hazard is determined by the concentration of
the contaminants, the energy of the radiation being emitted, the type of
radiation, and the proximity of the contamination to organs of the body.
It is important to be clear that the contamination gives rise to the
radiation hazard, and the terms "radiation" and "contamination" are not interchangeable. Contamination may affect a person, a place, an animal, or
an object such as clothing. Following an atmospheric nuclear weapon
discharge or a nuclear reactor containment breach, the air, soil, people,
plants, and animals in the vicinity will become contaminated by nuclear
fuel and fission products. A spilled vial of radioactive material like
uranyl nitrate may contaminate the floor and any rags used to wipe up the
spill. Cases of widespread radioactive contamination include the Bikini
Atoll, the Rocky Flats Plant in Colorado, the Fukushima Daiichi nuclear
disaster, the Chernobyl disaster, and the area around the Mayak facility in Russia.
Microrobots clean up Radioactive Waste. Researchers have developed
tiny, self-propelled robots that remove radioactive uranium from simulated
wastewater. To make their self-propelled microrobots, the researchers
designed ZIF-8 rods with diameters about 1/15 that of a human hair. The
researchers added iron atoms and iron oxide nanoparticles to stabilize the
structures and make them magnetic, respectively. Catalytic platinum
nanoparticles placed at one end of each rod converted hydrogen peroxide
"fuel" in the water into oxygen bubbles, which propelled the microrobots
at a speed of about 60 times their own length per second. In simulated
radioactive wastewater, the
microrobots removed 96% of the uranium in an hour. The team collected
the uranium-loaded rods with a magnet and stripped off the uranium,
allowing the tiny robots to be recycled. The self-propelled microrobots
could someday help in the management and remediation of radioactive waste,
the researchers say.
Radiotrophic Fungus are fungi which appear to perform radiosynthesis,
that is, to use the pigment melanin to convert gamma radiation into
chemical energy for growth. This proposed mechanism may be similar to
anabolic pathways for the synthesis of reduced organic carbon (e.g.,
carbohydrates) in phototrophic organisms, which convert photons from
visible light with pigments such as chlorophyll whose energy is then used
in photolysis of water to generate usable chemical energy (as ATP) in
photophosphorylation or photosynthesis. However, whether
melanin-containing fungi employ a similar multi-step pathway as
photosynthesis, or some chemosynthesis pathways, is unknown.
Radiosynthesis is the theorized capture and metabolism, by living
organisms, of energy from ionizing radiation, analogously to
photosynthesis.
Chemosynthesis is the biological conversion of one or more
carbon-containing molecules (usually carbon dioxide or methane) and
nutrients into organic matter using the oxidation of inorganic compounds
(e.g., hydrogen gas, hydrogen sulfide) or methane as a source of energy,
rather than sunlight, as in photosynthesis.
Nuclear Energy
Nuclear Reactor
is a device used to initiate and control a sustained nuclear
chain
reaction.
Thorium Reactor.
Nuclear Reaction is semantically considered to be the process in which
two nuclei, or a nucleus and an external subatomic particle, collide to
produce one or more new nuclides. Thus, a nuclear
reaction must cause a transformation of at least one nuclide to
another. If a nucleus interacts with another nucleus or particle and they
then separate without changing the nature of any nuclide, the process is
simply referred to as a type of nuclear scattering, rather than a nuclear
reaction. In principle, a reaction can involve more than two particles
colliding, but because the probability of three or more nuclei to meet at
the same time at the same place is much less than for two nuclei, such an
event is exceptionally rare (see triple alpha process for an example very
close to a three-body nuclear reaction). The term "nuclear reaction" may
refer either to a change in a nuclide induced by collision with another
particle, or to a spontaneous change of a nuclide without collision.
Natural nuclear
reactions occur in the interaction between cosmic rays and matter, and
nuclear reactions can be employed artificially to obtain nuclear energy,
at an adjustable rate, on demand. Perhaps the most notable nuclear
reactions are the nuclear chain reactions in fissionable materials that
produce induced nuclear fission, and the various nuclear fusion reactions
of light elements that power the energy production of the
Sun and stars. The process may be controlled
(nuclear power) or uncontrolled (nuclear weapons).
Nuclear
Chain Reaction occurs when one single nuclear reaction causes an
average of one or more subsequent nuclear reactions, thus leading to the
possibility of a self-propagating series of these
reactions. The
specific nuclear reaction may be the fission of heavy isotopes (e.g.,
uranium-235, 235U). The nuclear chain reaction releases several million
times more energy per reaction than any
chemical reaction.
E=mc2 (physics) -
Nuclear
Force -
Fission -
Fusion
Nuclear Fission is either a nuclear reaction or a
radioactive decay process in which the
nucleus of an atom splits into smaller parts (lighter nuclei). The fission
process often produces free neutrons and gamma photons, and releases a
very large amount of energy even by the energetic standards of radioactive
decay.
Nuclear Fusion is a reaction in which two or more atomic
nuclei come close enough to form one or more different atomic nuclei and
subatomic particles (neutrons or protons). The difference in mass between
the products and reactants is manifested as the release of large amounts
of energy. This difference in mass arises due to the difference in atomic
"binding energy" between the atomic nuclei before and after the reaction.
Fusion is the process that powers active or "main sequence" stars, or
other high magnitude stars.
Old Style Nuclear Reactors: The U.S. has 104 old style Nuclear
reactors operating at 65 sites
in 31 states. 440 in the world.
Pollution (toxic waste)
Next Generation Nuclear
Reactors -
Safer Nuclear Energy (Older Safer Design hidden from the
Public)
Generation III Reactor is a development of Generation II
nuclear reactor designs incorporating evolutionary improvements in design
developed during the lifetime of the Generation II reactor designs. These
include improved fuel technology, superior thermal efficiency,
significantly enhanced safety systems (including passive nuclear safety),
and standardized designs for reduced maintenance and capital costs. The
first Generation III reactor to begin operation was Kashiwazaki 6 (an ABWR)
in 1996.
Atomic States of America (2012) (video)
How fear of nuclear power is hurting the environment: Michael
Shellenberger (video and interactive text)
International Atomic Energy Agency (wiki) -
Nuclear Files
Radioactive Caesium-137, which is produced when uranium and
plutonium absorb neutrons and undergo fission, has a
half-life of about 30 years. The largest source of caesium-137
remains fall-out from those nuclear weapons tests in the 50s and
60s. But 6-30 miles above the Earth’s surface, in the
Stratosphere, the concentrations remain 1,000 to 1,500
levels higher than in the
Troposphere.
Caesium-137 is a radioactive isotope of caesium which is formed as one
of the more common fission products by the nuclear fission of
uranium-235 and other fissionable isotopes in nuclear reactors and
nuclear weapons. It is among the most problematic of the
short-to-medium-lifetime fission products because it easily moves and
spreads in nature due to the high water solubility of caesium's most
common chemical compounds, which are salts.
Heavy Metals in Soil.
Caesium symbol Cs and
atomic number
55. It is a soft, silvery-golden alkali metal with a melting point of 28.5
°C (83.3 °F), which makes it one of only five elemental metals that are
liquid at or near room temperature.
Roentgenium is a chemical element with the symbol Rg and
atomic number 111. It is an extremely
radioactive synthetic element that can be created in a laboratory but is
not found in nature.
Oganesson electron shells 2, 8, 18, 32, 32, 18, 8 (?) 18.
The most serious radioactive material release since
Fukushima 2011
took place in September 2017, but the public took little notice of it. A
slightly radioactive cloud moved across Europe. Now, a study has been
published, analyzing more than 1300 measurements from all over Europe and
other regions of the world to find out the cause of this incident. The
result: it was not a reactor accident, but an accident in a nuclear
reprocessing plant. The exact origin of the radioactivity is difficult to
determine, but the data suggests a release site in the southern Urals.
This is where the Russian nuclear facility Majak is located. The incident
never caused any kind of health risks for the European population. We
measured radioactive
ruthenium-106.
Fukushima Daiichi Nuclear Disaster was an energy accident at
the Fukushima Daiichi Nuclear Power Plant in Fukushima, initiated
primarily by the tsunami following the Tōhoku earthquake on 11 March 2011.
Immediately after the earthquake, the active reactors automatically shut
down their sustained fission reactions. However, the tsunami disabled the
emergency generators that would have provided power to control and operate
the pumps necessary to cool the reactors. The insufficient cooling led to
three nuclear meltdowns, hydrogen-air explosions, and the release of
radioactive material in Units 1, 2, and 3 from 12 March to 15 March. Loss
of cooling also caused the pool for storing spent fuel from Reactor 4 to
overheat on 15 March due to the decay heat from the fuel rods.
Facts about Ocean Radiation and the Fukushima Disaster
NCBI -
IAEA
-
Safecast
Fukushimas Nuclear Disaster has put Americas West Coast in
Danger
Fukushima decontamination strategies used and their effectiveness.
treating cultivated land, has cost the Japanese state about €24 billion.
(Caesium-137).
Chernobyl Disaster Flora and Fauna. After the disaster, four square
kilometres (1.5 sq mi) of pine forest directly downwind of the reactor
turned reddish-brown and died, earning the name of the "Red Forest". Some
animals in the worst-hit areas also died or stopped reproducing. Most
domestic animals were removed from the exclusion zone, but horses left on
an island in the Pripyat River 6 km (4 mi) from the power plant died when
their thyroid glands were destroyed by radiation doses of 150–200 Sv. Some
cattle on the same island died and those that survived were stunted
because of thyroid damage. The next generation appeared to be normal.
Land Mines
Land mine is an
explosive device concealed under or on the ground and designed to destroy
or disable enemy targets, ranging from combatants to vehicles and tanks,
as they pass over or near it. Such a device is typically detonated
automatically by way of pressure when a target steps on it or drives over
it, although other detonation mechanisms are also sometimes used. A land
mine may cause damage by direct blast effect, by fragments that are thrown by the blast, or by both.
Toxic Waste.
Minefield is an area planted with
explosive mines. An area of water or land set with mines. A subject or
situation presenting
unseen hazards.
Disarm Film -
No More Mines! Resolve the Global Landmine crisis.
The International Campaign to Ban Landmines I.C.B.L.
Rats Are Being Trained To Sniff Out Land Mines And Save Lives.
Drone Landmine Detector.
Cambodian Mine Action Center.
Researchers use drones, machine learning to detect dangerous 'butterfly'
landmines. Using advanced machine learning, drones could be used to
detect dangerous "butterfly" landmines in remote regions of post-conflict
countries, according to research from Binghamton University, State
University at New York. It is estimated that there are at least
100 million military munitions and explosives of
concern devices in the world, of various size, shape and
composition. Millions of these are surface plastic landmines with
low-pressure triggers, such as the mass-produced Soviet PFM-1 "butterfly"
landmine. Nicknamed for their small size and butterfly-like shape, these
mines are extremely difficult to locate and clear due to their small size,
low trigger mass and, most significantly, a design that mostly excluded
metal components, making these devices virtually invisible to metal
detectors. Critically, the design of the mine combined with a low
triggering weight have earned it notoriety as "the toy mine," due to a
high casualty rate among small children who find these devices while
playing and who are the primary victims of the PFM-1 in post-conflict
nations, like Afghanistan. The use of Convolutional Neural Network
(CNN)?based approaches to automate the detection and mapping of landmines
is important for several reasons.