Skip to main content

Home/ qmstech2/ Group items tagged cells

Rss Feed Group items tagged

Filter: All | Bookmarks | Topics Simple Middle

fuel cells - 3 views

started by carrowluk99 on 22 Oct 12 no follow-up yet
1More

How Fuel Cells Work - 1 views

www.fueleconomy.gov/...fcv_pem.shtml hydrogen convert
shared by combspat98 on 22 Oct 12 - No Cached
    • combspat98
      combspat98 on 22 Oct 12
       
      pictue and descripiton of how fuel cells work

is the supply of fuel cells resources limited by its location? - 1 views

started by carrowluk99 on 23 Oct 12 no follow-up yet
3More

HowStuffWorks "How Solar Cells Work" - 0 views

science.howstuffworks.com/...solar-cell.htm solar
shared by smithcol98 on 13 Mar 12 - Cached
  • ough light, they seem to work forever. Y
  • ong as there's
    • smithcol98
      smithcol98 on 13 Mar 12
       
      hi max
1More

Fossil Fuel Alternatives for Cars | eHow.com - 0 views

www.ehow.com/il-fuel-alternatives-cars.html hydrogen cost sustainable
shared by stamperdyl98 on 15 Mar 12 - No Cached
  • Hydrogen Hydrogen can be produced domestically through electrolysis (the process of splitting the hydrogen and oxygen particles apart in a water molecule). When used in automobiles, a hydrogen-powered car will emit only water vapor from its tailpipe. Hydrogen vehicles use fuel cells as their source of power, and currently this technology is too expensive for most consumers. If the costs of fuel cell technology and hydrogen production can decrease, hydrogen may become one of the most environmentally friendly and sustainable sources of energy available.
1More

Electricity from Fuel Cells - Technology Review - 0 views

www.technologyreview.com/...27010 hydrogen cost
shared by stamperdyl98 on 13 Mar 12 - No Cached
  • because the cost of fuel cells has dropped significantly over the last few years.
2More

Biofuel Facts, Biofuel Information - National Geographic - 0 views

environment.nationalgeographic.com/...biofuel-profile
shared by stockmanchl99 on 13 Mar 12 - Cached
  • Biofuels have been around as long as cars have. At the start of the 20th century, Henry Ford planned to fuel his Model Ts with ethanol, and early diesel engines were shown to run on peanut oil.
  • stockmanchl99 on 08 Mar 13
     
    "On the face of it, biofuels look like a great solution. Cars are a major source of atmospheric carbon dioxide, the main greenhouse gas that causes global warming. But since plants absorb carbon dioxide as they grow, crops grown for biofuels should suck up about as much carbon dioxide as comes out of the tailpipes of cars that burn these fuels. And unlike underground oil reserves, biofuels are a renewable resource since we can always grow more crops to turn into fuel. Unfortunately, it's not so simple. The process of growing the crops, making fertilizers and pesticides, and processing the plants into fuel consumes a lot of energy. It's so much energy that there is debate about whether ethanol from corn actually provides more energy than is required to grow and process it. Also, because much of the energy used in production comes from coal and natural gas, biofuels don't replace as much oil as they use. For the future, many think a better way of making biofuels will be from grasses and saplings, which contain more cellulose. Cellulose is the tough material that makes up plants' cell walls, and most of the weight of a plant is cellulose. If cellulose can be turned into biofuel, it could be more efficient than current biofuels, and emit less carbon dioxide. "
1More

NOVA | How Fuel Cells Work - 0 views

www.pbs.org/...fuel-cell-work.html hydrogen how
shared by plattjak98 on 13 Mar 12 - No Cached
  • Think of them as big batteries, but ones that only operate when fuel—in this case, pure hydrogen—is supplied to them.
2More

Hydrogen Fuel - 0 views

www.fueleconomy.gov/...hydrogen.shtml fuel cell cost
shared by olearydev99 on 19 Mar 12 - No Cached
  • Fuel Cost & Availability. Hydrogen is currently expensive to produce and is only available at a handful of locations, mostly in California. Vehicle Cost & Availability. Fuel cell vehicles are currently far too expensive for most consumers to afford, and they are only available to a few demonstration fleets.
  • olearydev99 on 13 Mar 13
     
    "It is an environmentally friendly fuel that has the potential to dramatically reduce our dependence on imported oil, but several significant challenges must be overcome before it can be widely used."
4More

Fuel Cells - Electrochemical Power - 1 views

www.fuelcell.no/hydrogen_mainpage_eng.htm Hydrogen what future
shared by dpurdy on 03 Nov 11 - No Cached
  • Hydrogen as the Main Fuel of the Future Over the last decades hydrogen, (H2) has gained more and more attention as an environmentally friendly fuel and storage medium. Combustion of pure hydrogen produces only water as exhaust. Hydrocarbon and carbon oxide emissions can only come from motor oil in the combustion chamber. Nitrous oxide emissions result from the nitrogen content in the air and increase exponentially with the combustion temperature. By using H2 in fuel cells, practically no pollution occurs. In this respect, hydrogen offers emission levels that are much lower than existing and future standards.
  • Hydrogen is the most common of all elements in the universe.
  • The desire for a long-term transition to a hydrogen society is mainly based on the need to reduce polluting and climate-affecting emissions and the concern about depletion of fossil fuel resources. Today about 90 % of the world's energy consumption is covered by fossil fuels, and most of this comes from a limited number of regions in the world. Even if hydrogen will be used on a large scale in the future, there is still a need for an energy source to produce it. Renewable energy technology such as hydro electricity, wind, wave and solar power are in principle available, but are not yet mature for mass production and/or fully developed. 
  • anonymous on 02 Oct 13
     
    Most quality online stores. Know whether you are a trusted online retailer in the world. Whatever we can buy very good quality. and do not hesitate. Everything is very high quality. Including clothes, accessories, bags, cups. Highly recommended. This is one of the trusted online store in the world. View now www.retrostyler.com
1More

Fuel Cells 2000 : Fuel Cell Basics : Benefits - 2 views

www.fuelcells.org/...benefits.html Hydrogen pollution
shared by dpurdy on 03 Nov 11 - No Cached
  • anonymous on 02 Oct 13
     
    Most quality online stores. Know whether you are a trusted online retailer in the world. Whatever we can buy very good quality. and do not hesitate. Everything is very high quality. Including clothes, accessories, bags, cups. Highly recommended. This is one of the trusted online store in the world. View now www.retrostyler.com
1More

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! 
2More

NREL: Learning - Solar Photovoltaic Technology Basics - 1 views

www.nrel.gov/...re_photovoltaics.html solar history
shared by bolendev99 on 03 Nov 11 - Cached
  • The PV effect was discovered in 1954, when scientists at Bell Telephone discovered that silicon (an element found in sand) created an electric charge when exposed to sunlight.
  • bolendev99 on 08 Mar 13
     
    "The PV effect was discovered in 1954, when scientists at Bell Telephone discovered that silicon (an element found in sand) created an electric charge when exposed to sunlight. Soon solar cells were being used to power space satellites and smaller items like calculators and watches. Today, thousands of people power their homes and businesses with individual solar PV systems. Utility companies are also using PV technology for large power stations. "
2More

World_energy_consumption_by_type_2006.png (763×277) - 4 views

upload.wikimedia.org/...y_consumption_by_type_2006.png world energy consumption fossil current
shared by dpurdy on 07 Nov 11 - No Cached
  • carrowluk99 on 22 Oct 12
     
    about 6.27% of energy is generated by hydrogen fuel cells
1More

Cheap fuel cells real soon? - Democratic Underground - 0 views

www.democraticunderground.com/10023006104 fuel cell sustainable
shared by gaworeckilog99 on 20 Sep 13 - No Cached
  • Scientists have come up with a more efficient way to split ocean water and turn it into sustainable, clean hydrogen fuel. They created a flexible plastic film that acts as the catalyst to begin splitting ocean water, without requiring the high energy input that current methods need.
1More

How Solar Works in 4 Steps « Energy4Home - 0 views

blogs.constellation.com/...how-solar-works-in-4-steps solar steps convert
shared by charlesjos00 on 27 Sep 13 - No Cached
  • 1) Individual silicon based (most commonly) cells called photovoltaics (PV) make up the modern day solar panel. These PV cell clusters perform the task of converting incoming sunlight directly into electricity. 2) Wires attached to the panels transport the converted electricity to a piece of equipment called an inverter. The job of the inverter is to convert the solar generated Direct Current (DC) electricity into the type of power your home can use, which is called Alternating Current (AC). 3) After the electricity travels through the inverter, the AC electricity is then transported via wire to your breaker panel to meet your home’s electric demands. 4) The process doesn’t end there, though. There are times when your panels will generate more power than you consume and times when you aren’t generating enough electricity (night times and periods of low light). When your panels are not generating enough solar electricity, you will continue to get power from your local utility. However, when you’re generating a surplus of solar electricity, that excess clean energy will be “net metered” to your local utility grid and you may earn a credit on your power bill for that net metered electricity.
« First ‹ Previous 101 - 120 of 165 Next › Last »
Showing 20▼ items per page