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Hydrogen fuel - Wikipedia, the free encyclopedia - 0 views

en.wikipedia.org/...Hydrogen_fuel hydrogen fuel form
shared by dpurdy on 24 Oct 12 - No Cached
  • Because pure hydrogen does not occur naturally, it takes energy to manufacture it. There are different ways to manufacture it, such as, electrolysis and steam-methane reforming process.
  • In electrolysis, electricity is run through water to separate the hydrogen and oxygen atoms. This method can be used by using wind, solar, geothermal, hydro, fossil fuels, biomass, and many other resources.
  • The more natural methods of making electricity (wind, solar, hydro, geothermal, biomass), rather than fossil fuels, would be better used as to continue the environment-friendly process of the fuel. Obtaining hydrogen from this process is being studied as a viable way to produce it domestically at a low cost. Steam-methane reforming process extracts the hydrogen from methane. However, this reaction causes a side production of carbon dioxide and carbon monoxide which are greenhouse gases and contribute to global warming.
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HowStuffWorks "How Fuel Cells Work" - 1 views

auto.howstuffworks.com/...fuel-cell1.htm hydrogen future potential uses history
shared by dpurdy on 26 Oct 12 - Cached
  • The fuel cell will compete with many other energy­ conversion devices, including the gas turbine in your city's power plant, the gasoline engine in your car and the battery in your laptop. Combustion engines like the turbine and the gasoline engine burn fuels and use the pressure created by the expansion of the gases to do mechanical work. Batteries convert chemical energy back into electrical energy when needed. Fuel cells should do both tasks more efficiently.
  • Sir William Grove invented the first fuel cell in 1839. Grove knew that water could be split into hydrogen and oxygen by sending an electric current through it (a process called electrolysis). He hypothesized that by reversing the procedure you could produce electricity and water. He created a primitive fuel cell and called it a gas voltaic battery. After experimenting with his new invention, Grove proved his hypothesis. Fifty years later, scientists Ludwig Mond and Charles Langer coined the term fuel cell while attempting to build a practical model to produce electricity.
  • carrowluk99 on 26 Oct 12
     
    " Combustion engines like the turbine and the gasoline engine burn fuels and use the pressure created by the expansion of the gases to do mechanical work. Batteries convert chemical energy back into electrical energy when needed. Fuel cells should do both tasks more efficiently."
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Home - BioFuel Information - 0 views

biofuel.org.uk biofuels what how future
shared by bureaumar98 on 15 Mar 12 - No Cached
  • The most important advantage of using liquid as fuel is that they can be easily pumped and can also be handled easily.
  • Biofuels are the best way of reducing the emission of the greenhouse gases.
  • Some of the major producers and users of biogases are Asia, Europe and America. Theoretically, biofuel can be easily produced through any carbon source; making the photosynthetic plants the most commonly used material for production. Almost all types of materials derived from the plants are used for manufacturing biogas. One of the greatest problems that is being faced by the researchers in the field is how to covert the biomass energy into the liquid fuel
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Hydrogen Fuel Cells | INTUITECH - Intuitive Technologies - 1 views

intuitech.biz/?p=7666 hydrogen current use
shared by dpurdy on 15 Mar 12 - No Cached
  • Thirty-eight nationally recognized companies in the United States, including eleven Fortune 500 corporations, are collectively saving millions of dollars in electricity costs while reducing carbon emissions by tens of thousands of tons per year by using fuel cells, according to a new report by Fuel Cells 2000, a non-profit education and outreach organization. 
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Wind power in the United States - Wikipedia, the free encyclopedia - 0 views

en.wikipedia.org/...ind_power_in_the_United_States current
shared by rutalil00 on 21 Mar 12 - Cached
  • The use of wind power in the United States has expanded quickly over the last several years. Construction of new wind power generation capacity in 2011 totaled 6810 megawatts
  • The use of wind power in the United States has expanded quickly over the last several years.
  • Wind power in the United States is a branch of the energy industry, expanding quickly over the last several years. Construction of new wind power generation capacity in the fourth quarter of 2012 totaled 8,380 megawatts (MW) bringing the cumulative installed capacity to 60,007 MW.[1] This capacity is exceeded only by China.[2] For the 12 months until July 2013, the electricity produced from wind power in the United States amounted to 157.8 terawatt-hours, or 3.91% of all generated electrical energy.[3]
  • pondalb98 on 12 Mar 13
     
    "The use of wind power in the United States has expanded quickly over the last several years."
  • crumnic00 on 24 Sep 13
     
    cumulative installed capacity to 60,007 MW.[1]
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EIA Energy Kids - Hydropower - 1 views

www.eia.gov/...energy.cfm what how location
shared by dpurdy on 03 Nov 11 - No Cached
  • Tides are caused by the gravitational pull of the moon and sun, and the rotation of the Earth. Near shore, water levels can vary up to 40 feet due to tides. Dam of the Tidal Power Plant on the Estuary of the Rance River, Bretagne, France Source: Stock photography (copyrighted) Tidal power is more predictable than wind energy and solar power. A large enough tidal range — 10 feet — is needed to produce tidal energy economically.
  • The United States has no tidal plants and only a few sites where tidal energy could be produced economically. France, England, Canada, and Russia have much more potential to use this type of energy.
  • Tidal turbines are basically wind turbines in the water that can be located anywhere there is strong tidal flow. Because water is about 800 times denser than air, tidal turbines have to be much sturdier than wind turbines. Tidal turbines are heavier and more expensive to build but capture more energy.
  • ...2 more annotations...
  • Waves are caused by the wind blowing over the surface of the ocean. There is tremendous energy in the ocean waves. It's estimated that the total potential off the coasts of the United States is 252 billion kilowatthours a year, about 6% of the United States' electricity consumption in 2010. The west coasts of the United States and Europe and the coasts of Japan and New Zealand are good sites for harnessing wave energy.
  • Many more ways to capture wave energy are currently under development. Some of these devices being developed are placed underwater, anchored to the ocean floor, while others ride on top of the waves. The world's first commercial wave farm using one such technology opened in 2008 at the Aguçadora Wave Park in Portugal.
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Wind Program: Frequently Asked Questions about Wind Energy - 2 views

www1.eere.energy.gov/...faqs.html Wind cons
shared by jack wells on 03 Nov 11 - No Cached
  • What is wind energy? Wind energy (or wind power) refers to the process by which wind turbines convert the movement of wind into electricity. Winds are caused by the uneven heating of the atmosphere by the sun, the irregularities of the earth's surface, and rotation of the earth. Humans use this wind flow for many purposes: sailing boats, pumping water, and also generating electricity. Wind turbines convert the kinetic energy of the moving wind into electricity.
  • Birds and bats are occasionally killed in collisions with wind turbines. Like any form of development, wind projects can also negatively impact wildlife by altering habitat. Over the past two decades, the impact of wind development on birds has been greatly reduced by improvements in turbine design and particularly through improved project and turbine siting.
  • dpurdy on 03 Nov 11
     
    How do wind turbines work? A wind turbine works like a fan, but in reverse: instead of using electricity to make wind, like a fan, wind turbines use wind to make electricity. The wind turns the turbine's blades, which spin a shaft connected to a generator to make electricity.
  • jack wells on 11 Mar 13
     
    wind energy facts.
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Energy Resources: Wind power - 0 views

home.clara.net/...wind.htm Wind location what how history
shared by dpurdy on 03 Nov 11 - Cached
  • The Sun heats our atmosphere unevenly, so some patches become warmer than others. These warm patches of air rise, other air blows in to replace them - and we feel a wind blowing. We can use the energy in the wind by building a tall tower, with a large propellor on the top. The wind blows the propellor round, which turns a generator to produce electricity.
  • he best places for wind farms are in coastal areas, at the tops of rounded hills, open plains and gaps in mountains - places where the wind is strong and reliable. Some are offshore.
  • The best places for wind farms are in coastal areas, at the tops of rounded hills, open plains and gaps in mountains - places where the wind is strong and reliable. Some are offshore.
  • ...4 more annotations...
  • Advantages Wind is free, wind farms need no fuel. Produces no waste or greenhouse gases. The land beneath can usually still be used for farming
  • Suitable areas for wind farms are often near the coast, where land is expensive.
  • Can be noisy. Wind generators have a reputation for making a constant, low, "swooshing" noise day and night, which can drive you nuts.
  • Wind power is renewable. Winds will keep on blowing, it makes sense to use them.
  • anonymous on 02 Oct 13
     
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NREL: Learning - Wind Energy Basics - 0 views

www.nrel.gov/...re_wind.html wind uses
shared by dpurdy on 03 Nov 11 - Cached
  • Applications These wind turbines near Lamar, Colorado, are part of the 162-MW Colorado Green Wind Farm. Each turbine produces 1.5 megawatts of electricity. Wind turbines can be used as stand-alone applications, or they can be connected to a utility power grid or even combined with a photovoltaic (solar cell) system. For utility-scale (megawatt-sized) sources of wind energy, a large number of wind turbines are usually built close together to form a wind plant. Several electricity providers today use wind plants to supply power to their customers.
  • anonymous on 02 Oct 13
     
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PowerPedia:Solar Energy - PESWiki - 2 views

peswiki.com/...PowerPedia:Solar_Energy solar pollution location grid
shared by dpurdy on 03 Nov 11 - No Cached
  • Solar power is pollution free during use. Production end wastes and emissions are manageable using existing pollution controls.
  • In situations where connection to the electricity grid is difficult, costly, or impossible (such as island communities, areas not served by a power grid, illuminated roadside signs, and ocean-going vessels) harvesting solar power is often an economically competitive alternative to energy from traditional source
  • Intermittency: It is not available at night and is reduced when there is cloud cover, decreasing the reliability of peak output performance or requiring a means of energy storage.
  • ...1 more annotation...
  • Locations at high latitudes or with frequent substantial cloud cover offer reduced potential for solar power use.
  • anonymous on 02 Oct 13
     
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How Solar Works | Solar Panel Installation Los Angeles - 0 views

www.gosolarcenter.com/How-Solar-Works.aspx sustainable co2 cost solar
shared by kilburnzac00 on 23 Sep 13 - No Cached
  • Solar energy is an infinitely renewable resource that uses the sun's rays to generate electricity for use in your home. By going solar, you can reduce your energy costs and lower your dependence on fossil fuels, thereby making your own contribution to a cleaner environment. Generally, the solar energy systems we use work as follows:
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reich-chemistry - Donovan.Norberg.Fall.2010 - 0 views

reich-chemistry.wikispaces.com/Donovan.Norberg.Fall.2010 biofuel pollution form
shared by hollale00 on 24 Sep 13 - No Cached
  • Biodiesel is a type of bio-fuel which is used to fuel cars and other vehicles. Biodiesel is used as alternative petroleum oil. Biodiesel is special because it is a clean resource and is safe to use in our environment, compared to other fuels that pollute the planet. Biodiesel is made from renewable resources which make it easier to produce. Biodiesel also lubricates car engines, which decreases engine wear, making the engine last longer. Speaking of engines, biodiesel is compatible with most car engines that run on diesel. According to researchers, biodiesel can reduce the risk of cancer, which the emitting of petroleum oil have been known to cause.
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Converting Wind Energy Into Electricity - 0 views

www.envirocitizen.org/...1056.html convert wind electricity
shared by justice colvin on 24 Sep 13 - No Cached
  •  The process of converting wind energy to electric energy uses a wind turbine. The wind turbines convert the kinetic energy in the wind into mechanical power. The mechanical power can be used for many things. In the past this meant pumping water, creating ventilation, or grinding food sources. While these things still occur, wind power is also used to generate electricity.      The wind turbine is a tall shaft with several horizontal rectangular blades attached to it. These blades are often covered with stiff material or ratting material. When turned they push against the air, causing pressure, and turning the inner shaft. This shaft connects to a generator which then creates energy.
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History of Geothermal Energy | Clean Energy Ideas - 0 views

www.clean-energy-ideas.com/...history-of-geothermal-energy geothermal history
shared by hardingmar00 on 24 Sep 13 - No Cached
  • It is believed that the first geothermal energy use in industry was during the late 18th century near Pisa, Italy. This history of geothermal shows energy been used to extract boric acid from the Larderello Fields through the use of steam
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Oregon DEQ: Bioiesel air quality - 0 views

www.deq.state.or.us/...reducepollution.htm biofuel pollution
shared by schmettererdav00 on 30 Sep 13 - No Cached
  • Biodiesel can result in significant reductions in a number of air pollutants. In general, reductions are greater as more biodiesel is used, depending on the type of biodiesel (soybean, rapeseed or animal fats) and on the conventional diesel used in the blend.

fossil fuels BP - 0 views

started by blackmerbru98 on 03 Oct 13 no follow-up yet
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Geothermal Energy and the Environment - Energy Explained, Your Guide To Understanding E... - 1 views

www.eia.gov/...index.cfm geothermal pollution
shared by dpurdy on 11 Nov 12 - No Cached
  • eothermal power plants do not burn fuel to generate electricity, so their emission levels are very low. They release less than 1% of the carbon dioxide emissions of a fossil fuel plant. Geothermal plants use scrubber systems to clean the air of hydrogen sulfide that is naturally found in the steam and hot water.
  • Geothermal plants emit 97% less acid rain-causing sulfur compounds than are emitted by fossil fuel plants. After the steam and water from a geothermal reservoir have been used, they are injected back into the Earth.
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