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camptif97

Fuel cell - Wikipedia, the free encyclopedia - 0 views

en.wikipedia.org/Fuel_cells

pollution

shared by camptif97 on 20 Mar 12 - Cached
  • a fuel cell power plant using natural gas as a hydrogen source would create less than one ounce of pollution (other than CO2) for every 1,000 kW produced, compared to 25 pounds of pollutants generated by conventional combustion systems
  • Fuel Cells also produce 97% less nitrogen oxide emissions then conventional coal-fired power plants.
filionmar99

File:World energy consumption by type 2006.png - Wikimedia Commons - 3 views

commons.wikimedia.org/...y_consumption_by_type_2006.png

current biofuel

shared by filionmar99 on 28 Mar 12 - No Cached
    • dpurdy
      dpurdy on 28 Mar 12
       
      Great graph on energy use in each area.
  • current
dpurdy

Solar Energy and Energy Independence - 1 views

www.americanenergyindependence.com/solarenergy.aspx

solar potential

shared by dpurdy on 03 Nov 11 - No Cached
  • Science tells us that every square meter of the earth's surface, when exposed to direct sunlight, receives about 1000 watts (1 kilowatt) of energy from the sun's light.
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dpurdy

Solar Energy Facts - 0 views

www.alternative-energy-resources.net/solarenergyfacts.html

solar how

shared by dpurdy on 03 Nov 11 - No Cached
  • Solar Cells or photovoltaic cells convert sunlight directly into electricity. When energy from the sun comes in contact with the cell, electrons in the two different semiconductors absorb the energy and use it to move around, creating an electrical current.
dpurdy

Define Wind Energy - Here are Wind Energy Facts - 0 views

www.alternative-energy-resources.net/definewindenergy.html

what Wind

shared by dpurdy on 03 Nov 11 - No Cached
  • In scientific terms, wind energy is the "force" of winds blowing across the earth’s surface ("Wind Energy"). Wind is caused by uneven heating on the earth’s surface. The equator region receives more heat than say, Antarctica.
  • That heat tries to move from hotter to colder regions. Wind energy was first harvested centuries ago, when early windmills were used to power millstones, pumps, and forges
  • The amount of kinetic energy within Earth's atmosphere is equal to about 10,000 trillion kilowatt-hours.
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dpurdy

EIA Energy Kids - Renewable - 0 views

www.eia.gov/...energy.cfm

sustainable current

shared by dpurdy on 03 Nov 11 - No Cached
    • dpurdy
      dpurdy on 03 Nov 11
       
      Graphic showing US energy production and consumption for all energy sources, fossil fuel and renewable. 
dpurdy

Fuel Cells - Electrochemical Power - 1 views

www.fuelcell.no/applications_mobile_eng.htm

fuel cells history cost

shared by dpurdy on 03 Nov 11 - No Cached
  • One of the first applications for fuel cells based on their advantageous properties was in the us space program.
  • Compared to IC engines, fuel cells have practically no polluting exhaust like NOx and sulphides.
  • It is generally acknowledged that the feasibility and durability of fuel cells in automobiles has been proven. The major focus now is on cost reduction
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dpurdy

Fuel Cells - Electrochemical Power - 0 views

www.fuelcell.no/principle_history_eng.htm

history

shared by dpurdy on 03 Nov 11 - No Cached
  • The best known early fuel cell experiments were performed in 1842 by the British physicist and lawyer, Sir William R. Grove (1811-1896)
  • Due to easily accessible and large amounts of oil and the invention of the combustion engine (Carl Friedrich Benz and Gottlieb Daimler), fuel cells were forgotten until the middle of the 20th century. In the us Apollo space programme, fuel cells exhibited their first renaissance in the 1960’s. 
  • Fuel cell development has been slowed down by a fear of hydrogen as a fuel. It is commonly believed that hydrogen is an extremely explosive and dangerous gas. Most of this belief was founded in 1937, when the hydrogen-filled zeppelin “Hindenburg” caught fire and crashed in Lakehurst, usA.
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dpurdy

Fuel Cells 2000 : Hydrogen : Basics - 1 views

www.fuelcells.org/...basics.html

Hydrogen cost

shared by dpurdy on 03 Nov 11 - Cached
  • How much will Hydrogen fuel cost? The U.S. Department of Energy's Hydrogen, Fuel Cells & Infrastructure Technologies Program is working to achieve the following goals: By 2005, the technology will be available to produce hydrogen at the pump for $3.00 per gallon gasoline equivalent, and DOE wants to validate this technology by 2008.  By 2010, the price goal is $1.50 per gallon of gasoline equivalent (untaxed) at the station. Even $3 a gallon would save most of us money, since FCVs will be two to three times more efficient than internal combustion engine (ICE) vehicles.  If all the goals are met, FCVs offer the promise of energy at $1 a gallon - or less! 
dpurdy

Wave Energy Wave Power Clean Renewable Electricity Generation - Wavegen - 1 views

www.wavegen.co.uk/info_schools_wave_whistles.htm

wave what

shared by dpurdy on 03 Nov 11 - No Cached
  • Ocean waves are a tertiary form of solar energy, in that unequal heating of the Earth’s surface generates wind, and wind blowing over water generates waves. Despite the fact that nearly 75% of the Earth’s surface is covered with water, waves are a largely unexplored source of energy, compared with the progress that has been made in harnessing the sun and wind.
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dpurdy

OWECO By Others - 1 views

www.owec.com/byOTHERS.html

wave form

shared by dpurdy on 03 Nov 11 - No Cached
  • ocean waves is long considered substantive kinetic resource
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dpurdy

NREL: Learning - Geothermal Electricity Production - 0 views

www.nrel.gov/...re_geo_elec_production.html

geothermal how

shared by dpurdy on 03 Nov 11 - Cached
  • Geothermal Electricity Production This geothermal power plant generates electricity for the Imperial Valley in California. Geothermal power plants use steam produced from reservoirs of hot water found a few miles or more below the Earth's surface to produce electricity. The steam rotates a turbine that activates a generator, which produces electricity.
dpurdy

EIA Energy Kids - Energy Basics - 0 views

www.eia.gov/...energy.cfm

current

shared by dpurdy on 03 Nov 11 - No Cached
  • Energy Is the Ability To Do Work Energy comes in different forms: Heat (thermal) Light (radiant) Motion (kinetic) Electrical Chemical Nuclear energy Gravitational
  • Renewable Energy Renewable energy sources include: Solar energy from the sun, which can be turned into electricity and heat Wind Geothermal energy from heat inside the Earth Biomass from plants, which includes firewood from trees, ethanol from corn, and biodiesel from vegetable oil Hydropower from hydroturbines at a dam
dpurdy

Photovoltaics - Lighting the World - 1 views

solardev.com/SEIA-lightworld.php

solar location potential current

shared by dpurdy on 03 Nov 11 - No Cached
  • 200,000 homes in the U.S. use some type of photovoltaic solar technology-and the market is expanding at a healthy 15% annually.
  • PV modules covering 0.3% of the land in the U.S., equivalent to one fourth of the area currently occupied by railroads, could provide all of the US's electricity needs.
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dpurdy

RenewableUK - Where Does Tidal Energy Come From? - 0 views

www.bwea.com/tides.html

what Tide

shared by dpurdy on 03 Nov 11 - No Cached
  • Where Does Tidal Energy Come From? The gravitational force of the Earth stops the ocean from floating off into space, just like everything else. The Moon also has a very weak gravitational effect on the Earth, which is not normally noticable as far as falling teacups are concerned, but the ocean, which can flow around the globe to even out differences, is noticably affected.
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dpurdy

What is wave energy? | Pelamis Wave Power - 4 views

www.pelamiswave.com/...what-is-wave-energy

wave what pollution sustainable co2 form

shared by dpurdy on 03 Nov 11 - No Cached
  • What is wave energy? Waves are generated by the passage of wind across the surface of the sea.  Energy is transferred from the wind to the waves.  Waves travel vast distances across the ocean and at great speed and the energy is concentrated near the water surface.  The energy within a wave is proportional to the square of the wave height.  Therefore a two-meter high wave has four times the power of a one-meter high wave. The longer and stronger the wind blows over the surface of the sea, the higher, longer, faster and more powerful the sea is.
  • Although wave energy is a form of concentrated wind energy, as it has often travelled over large distances it is regularly out of phase with the local wind conditions.  Wave energy can therefore help to balance output variability from other renewable sources and maximise the efficient use of the electricity networks.   Wave energy is also more predictable than many other forms of renewable energy, such as wind or solar, and can be forecast accurately up to five days in advance.
  • Wave energy is clean and renewable!  It is one of the last renewable energy forms which mankind has yet to harness, and its potential is huge.
  • ...1 more annotation...
  • Wave energy could play a major part in the world’s efforts to combat climate change, potentially displacing 1 – 2 billion tonnes of CO2 per annum from conventional fossil fuel generating sources.
rascoekat00

Hydropower: Generate Energy with Rivers and Ocean Tides - For Dummies - 0 views

www.dummies.com/...y-with-rivers-and-ocean-t.html

tide energy electricity

shared by rascoekat00 on 20 Sep 13 - No Cached
  • When water flows toward the shore with the incoming tide, it flows through a tidal energy system, turning a turbine that generates electricity. When the tide shifts and flows in the opposite direction, away from shore, the tidal energy system again captures the energy with a turbine and converts it into electricity.
  • An important source of alternative energy is hydropower: converting the flow of rivers and ocean waves and tides into electricity through dams and turbines. The best part about both of these water sources is that they’re 100 percent renewable.
  • The main advantage of using ocean tides for energy is that tides and waves are a constant, unchanging, clean source of energy. The main disadvantage is that tidal energy systems may impact the environment by changing the flow of water into shoreline and estuarine ecosystems.
dylan purner

Business Opportunities Assessment for Solar Photovoltaic (PV) Market in Brazil - 0 views

www.prweb.com/...prweb11130878.htm

photovoltaic solar cost opportunities business

shared by dylan purner on 20 Sep 13 - No Cached
  • The Brazilian government still awaits a reduction in solar prices to create a specific auction by the end of 2013 or the beginning of 2014. However, the Ministry of Mines and Energy (MME) does not demonstrate any signs of this happening.
  • In 2013, however, revenue and capacity installed are expected to double: projects will be delivered, the resolution 482/2012 will have a major impact, and X% of the National Association of Electric Energy’s (ANEEL’s) research and development (R&D) will conclude. Capacity installed expectations in 2013 will near X megawatts (MW); in 2014, X MW; in 2015, X MW; and beyond, faster expansion is expected. Currently, capacity installed for the solar market is X MW, but it is expected to reach X MW by 2017. The total possible capacity installed for Brazil is close to X gigawatts (GW). This market revenue will have a X% compound annual growth rate (CAGR) during the forecast period (2012–2017) due to ANEEL´s R&D, international events, and the resolution 482/2012 cost reductions. Now, market revenue is close to $X million and can reach $X million by 2017.
  • Distributed generation could grow faster with financial support, better service from energy concessionaries, and cost reductions; nonetheless, it will grow considerably.
  • ...2 more annotations...
  • Distributed microgeneration: electricity generating system, with capacity installed less than or equal to
  • kilowatts (kW); uses solar energy connected to the distribution network through facilities of consumer units Distributed minigeneration: electricity generating system with a capacity installed greater than 100 kW and less than or equal to X MW for the same sources; connected to the distribution network through facilities of consumer units
gaworeckilog99

Fuel cell - Simple English Wikipedia, the free encyclopedia - 0 views

simple.wikipedia.org/...Fuel_cell

fuel cell co2

shared by gaworeckilog99 on 20 Sep 13 - No Cached
  • t has to be produced first, and if this is done by burning fossil fuels, it does not help against climate change. But, the hydrogen fuel cell will help against climate change in future, because scientists are trying to find new ways to make hydrogen without using fossil fuels.
charlesjos00

Where Does Solar Energy Come from - Ask.com - 0 views

www.ask.com/...re-does-solar-energy-come-from

form

shared by charlesjos00 on 20 Sep 13 - No Cached
  • Solar Energy comes from Sun. Sun is a hot ball of Hydrogen & Helium. Due to fission reaction of Hydrogen molecules, energy is emitted which is known as Solar Energy.
  • Solar thermal energy transfers heat directly from the sun to heat air or water for residential or commercial use.
  • Solar energy comes from the lowest point of the sun. The sun bears a constant stream of thermonuclear explosions as hydrogen atoms are merged into helium atoms. The Sun is like a humongous power station that constantly does a reaction that lets out light.
  • ...1 more annotation...
  • Solar energy comes from the lowest point of the sun.
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