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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.
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Benefits of Fuel Cell Technology - 1 views

www.fuelcellenergy.com/efits-fuel-cell-technology.php benifits fuel cell cost
shared by camptif97 on 03 Nov 11 - No Cached
  • With low emissions of pollutants such as nitrogen oxides (NOx), sulfur oxides (SOx), and particulate matter as well as dramatically lower emissions of carbon dioxide (CO2),
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HowStuffWorks "How the Hydrogen Economy Works" - 0 views

auto.howstuffworks.com/...hydrogen-economy2.htm pollution location sustainable co2
shared by dpurdy on 03 Nov 11 - No Cached
  • The elimination of pollution caused by fossil fuels - When hydrogen is used in a fuel cell to create power, it is a completely clean technology. The only byproduct is water. There are also no environmental dangers like oil spills to worry about with hydrogen. The elimination of greenhouse gases - If the hydrogen comes from the electrolysis of water, then hydrogen adds no greenhouse gases to the environment. There is a perfect cycle -- electrolysis produces hydrogen from water, and the hydrogen recombines with oxygen to create water and power in a fuel cell. The elimination of economic dependence - The elimination of oil means no dependence on the Middle East and its oil reserves. Distributed production - Hydrogen can be produced anywhere that you have electricity and water. People can even produce it in their homes with relatively simple technology.
  • anonymous on 28 Sep 13
     
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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.
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HowStuffWorks "Hydrogen Fuel Economy" - 0 views

auto.howstuffworks.com/...hydrogen-vehicle-benefit3.htm hydrogen fuel economy fuel cell sustainable pollution
shared by geczyluk99 on 23 Sep 13 - No Cached
  • If hydrogen extraction is performed using electricity from a coal-driven power plant, it doesn't matter that the fuel cell doesn't pollute because the pollution occurred when the hydrogen was extracted. If hydrogen is to be a true nonpolluting power source, the electricity used to extract the hydrogen will need to be produced by a nonpolluting method such as solar power.
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What is a Fuel Cell - 0 views

www.electrictv.net/...fuel-cell-energy fuel cell pollution
shared by geczyluk99 on 25 Sep 13 - No Cached
  • Because they don’t go through the combustion process, there’s none of the pollution that’s associated with pollution, there’s no nox, there’s no particulate formation.
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First production hydrogen fuel cell cars hit the market, from Hyundai | ExtremeTech - 0 views

www.extremetech.com/...rs-hit-the-market-from-hyundai fuel cell pollution
shared by gaworeckilog99 on 23 Sep 13 - No Cached
  • rather than burning hydrogen in place of gasoline as BMW has done with its internal combustion hydrogen cars. Either way, the only emission is water vapor.
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FCT - FAQ - 0 views

www.fuelcelltoday.com/...faq fuel cell cost
shared by gaworeckilog99 on 24 Sep 13 - No Cached
  • Technological developments are continually lowering the material and component cost of fuel cells and production is being ramped up and automated, allowing economies of scale to be realised.
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The Disadvantages Of A Solar Generator | LIVESTRONG.COM - 1 views

www.livestrong.com/...dvantages-of-a-solar-generator cost
shared by ackleysam99 on 22 Oct 12 - No Cached
  • Solar power generators offer a no-emission alternative to ones that use fossil fuel. These generators come in small, portable sizes for temporary power or larger arrays for permanent energy production.
  • availability of sunlight given local weather conditions and the resilience of the photovoltaic cells when purchasing a solar generator.
  • Most photovoltaic cells rely on silicon crystals to generate power. Demand for silicon has driven its price higher, meaning a solar generator can require a sizable initial investment. In fact, SolarBuzz notes that 45 percent of solar cell cost comes from the silicon wafer. Typical 2 kilowatt solar generators cost from $16,000 to $20,000.
  • ...2 more annotations...
  • Solar generators powerful enough to supply electricity for a whole home also require a lot of space, with roof-mounted panels needing at least 50 square feet and possibly as much as
  • 1,000 square feet. Lack of Durability
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Hydrogen Basics | Fuel Cells 2000 - 0 views

www.fuelcells.org/...hydrogen-basics hydrogen infrastructure
shared by dpurdy on 14 Nov 12 - No Cached
  • .  To store hydrogen in liquid form, hydrogen must be cooled to -423 °F, requiring a tremendous amount of energy.
  • Hydrogen vehicle fueling stations may generate hydrogen on-site or receive deliveries of trucked-in hydrogen.
  • Hydrogen’s energy density is 52,000 Btu/lb., which is three times greater than that of gasoline.
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Quick Facts about Solar Energy | Solarbuzz - 0 views

www.solarbuzz.com/...quick-facts solar solar power facts
shared by butlerlex99 on 12 Mar 13 - No Cached
  • Quick and interesting facts related to solar energy.  For more terms and explanations, consult our solar glossary. One kilowatt equals 1,000 watts. One kilowatt-hour (kWh) equals the amount of electricity needed to burn a 100 watt light bulb for 10 hours. A sunny location (like Los Angeles, California, US) receives an average of 5.5 hours of sunlight per day each year. A cloudy location (like Hamburg, Germany) receives 2.5 hours per day of sunlight each year. A 1 kilowatt peak solar system generates around 1,600 kilowatt hours per year in a sunny climate and about 750 kilowatt hours per year in a cloudy climate. A solar energy system can provide electricity 24 hours a day when the solar electric modules are combined with batteries in one integrated energy system. Solar modules produce electricity even on cloudy days, usually around 10-20% of the amount produced on sunny days. The typical components of a solar home system include the solar module, an inverter, a battery, a charge controller (sometimes known as a regulator), wiring, and support structure. A typical silicon cell solar module will have a life in excess of 20 years Monthly average residential consumption of electricity in the US in 2008 was 920 kilowatt hours. (Source: US DOE) Monthly average residential electricity bill in the US in 2008 was $103.67. (Source: US DOE)  
  • One kilowatt equals 1,000 watts. One kilowatt-hour (kWh) equals the amount of electricity needed to burn a 100 watt light bulb for 10 hours. A sunny location (like Los Angeles, California, US) receives an average of 5.5 hours of sunlight per day each year. A cloudy location (like Hamburg, Germany) receives 2.5 hours per day of sunlight each year. A 1 kilowatt peak solar system generates around 1,600 kilowatt hours per year in a sunny climate and about 750 kilowatt hours per year in a cloudy climate. A solar energy system can provide electricity 24 hours a day when the solar electric modules are combined with batteries in one integrated energy system. Solar modules produce electricity even on cloudy days, usually around 10-20% of the amount produced on sunny days. The typical components of a solar home system include the solar module, an inverter, a battery, a charge controller (sometimes known as a regulator), wiring, and support structure. A typical silicon cell solar module will have a life in excess of 20 years Monthly average residential consumption of electricity in the US in 2008 was 920 kilowatt hours. (Source: US DOE) Monthly average residential electricity bill in the US in 2008 was $103.67. (Source: US DOE)
  • butlerlex99 on 12 Mar 13
     
    ddid you knows about solar energy
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SOLAR POWER BENEFITS - 0 views

www.vivasolar.com/solarpowerbenifits.html solar sustainable cost pollution
shared by dextereli99 on 12 Mar 13 - No Cached
  • Advantages of solar power are many. Although solar power is an energy source that we have only recently tapped into, it may easily become the most important energy source of the future. • Solar power is a renewable and natural resource. • Solar power is non-polluting. Unlike oil, solar power does not emit greenhouse gases or carcinogens into the air. • Light and energy from the sun costs nothing. Once you purchase the equipment to collect and convert energy from the sun, it costs you nothing to run. • Solar cells require little maintenance. • Solar cells can last a lifetime. • Solar power is silent.
  • • Solar energy can be used to heat water, dry clothes, heat swimming pools, power attic fans, power small appliances, produce light for both indoors and outdoors, and even to power cars, among other things.
  • • Solar energy products can be very expensive. The initial cost is, perhaps, the main disadvantage of solar energy. • To reach maximum level of efficiency you need a relatively large area to install solar panels. • Depending where you live (Arizona vs. Alaska, around many shady trees or in the desert, etc.), you will get different results with solar energy systems.
  • ...3 more annotations...
  • • If you have a really good solar energy system, one that produces even more energy than you use, your utility company might buy that extra energy from you. • When you use solar energy, you and your home become independent on foreign or other sources of energy which raise costs quickly. • To run solar water pumps, you do not even need to connect to a gas or power grid. • Solar energy cannot be produced at night or if there is a lot of pollution in the air or clouds over the sun.
  • • Of course, realize you can have a battery backup system for your solar energy system that will take care of the problems that could arise when the sun does not. • You can install solar energy in remote locations. • If there is a power outage, but you run on solar, you will still have electricity! • As your energy needs grow, you can add more solar panels
  • • Technology for solar energy is constantly improving.
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Fuel Cell Vehicles - 0 views

www.consumerenergycenter.org/...index.html fuel cell form
shared by freedenjoh99 on 11 Mar 13 - Cached
  • Currently, most hydrogen is made from natural gas through a process known as reforming. Reforming separates hydrogen from hydrocarbons by adding heat. Hydrogen can also be produced from a variety of sources including water and biomass.
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How Do PV Solar Panels Work - Solar - 0 views

www.reuk.co.uk/ow-Do-PV-Solar-Panels-Work.htm convert
shared by coreyemi99 on 20 Mar 13 - No Cached
  • When a visible light photon strikes a solar cell it can do one of three things: pass straight through, be reflected, or be absorbed. If the photon is absorbed, its energy is absorbed by an electron in an atom of the solar cell enabling it to escape from its normal position (photon excitation), cross the junction and fill a hole. Since electrons are physically moving across the PN junction, the positive charge carrying holes are effectively moving in the opposite direction around the load circuit (a rechargeable battery or light bulb etc). This completes the circuit providing more holes for the electrons to combine with and providing usable electricity.
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Fuel cell - Wikipedia, the free encyclopedia - 1 views

en.wikipedia.org/...Fuel_cell
shared by smithree98 on 29 Oct 12 - No Cached
  • There were 140,000 fuel cell stacks shipped globally in 2010
  • although, as of 2010, no public company in the industry had yet become profitable
  • smithree98 on 29 Oct 12
     
    actually a pretty decent site to find info on hydrogen
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MIT's artificial leaf is ten times more efficient than the real thing (Wired UK) - 0 views

www.wired.co.uk/...artificial-leaf solar hydrogen how sustainable
shared by dpurdy on 24 Oct 12 - No Cached
  • The device is an advanced solar cell, no bigger than a typical playing card, which is left floating in a pool of water. Then, much like a natural leaf, it uses sunlight to split the water into its two core components, oxygen and hydrogen, which are stored in a fuel cell to be used when producing electricity.
  • dpurdy on 24 Oct 12
     
    This is an amazing breakthrough in developing hydrogen.
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