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Energy from Wind Power - 0 views

  • Wind energy is a pollution-free, infinitely sustainable form of energy. It doesn’t use fuel; it doesn’t produce greenhouse gasses and it doesn’t produce toxic or radioactive waste.
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Wind farms can cause climate change, finds new study - Telegraph - 0 views

  • Wind farms can cause climate change, according to new research, that shows for the first time the new technology is already pushing up temperatures.
  • Usually at night the air closer to the ground becomes colder when the sun goes down and the earth cools. But on huge wind farms the motion of the turbines mixes the air higher in the atmosphere that is warmer, pushing up the overall temperature.
    • dpurdy
       
      What this means is that close to the wind farm there is a local warming, not a global impact.
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How Fuel Cells Work - 1 views

    • combspat98
       
      pictue and descripiton of how fuel cells work
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Reducing the Cost of Fuel Cells - 0 views

  • Most folks don’t realize the depth of the economic problem that fuels cells pose for mass adoption.  Often there are price quotes running in the tens or hundreds of thousands of dollars.  That’s because the catalysts of choice are the noble metals platinum or palladium.  These are very rare metals, more so than gold and have considerable market presence already in the automotive field.
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Group items matching "change future" in title, tags, annotations or url - qmstech2 | Di... - 0 views

  • We are working to produce biofuels that are low cost, low carbon, sustainable and able to fulfil the world’s transportation fuel needs on a large scale without compromising food production
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Biodiesel Fuel Uses - 0 views

  • There already many biodiesel fuel uses, and as technology continues to develop, so do the opportunities to replace traditional fossil fuels with this viable alternative.
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How is Wind Formed? - Answers.Ask.com - 0 views

  • Wind is formed when heats over a large area, causing the air to expand and causing a pressure change. When a low pressure system runs into a high pressure system, it causes a change in the air resulting in wind
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Fuel-Cell Vehicles | Union of Concerned Scientists - 0 views

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    A fuel cell produces electricity directly from the reaction of hydrogen and oxygen. The only byproduct is water. A fuel-cell vehicle utilizes the electricity produced by the fuel cell to power motors at the vehicle's wheels. Fuel-cell vehicles are similar to battery-electric vehicles in that they are powered by electricity, but they do not have to be recharged like battery vehicles.
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Solar Energy Facts - 0 views

  • he energy from the sun  varies from place to place and is very dependent on weather conditions. Without an atmosphere 1.4 KW/m2 per hour is available, but with an atmosphere we can only count on 1KW/m2 per hour in the absence of clouds. So, if asked how much 3 hours of sunlight on one square meter is worth what would you say?
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Discover the true FACTS about Solar Energy | INTERESTING Solar Energy FACTS - 0 views

  • Solar Energy is better for the environment than traditional forms of energy.
  • Solar energy can also be used to heat swimming pools, power cars, for attic fans, calculators and other small appliances. It produces lighting for indoors or outdoors.
  • Accounting for only 5 percent of the world's population, Americans consume 26 percent of the world's energy.
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Industry:Biofuels - 0 views

  • Biofuel, based on fuel derived from organic biomass from recently living animals or plants or their byproducts, has transformed from a niche alternative to fossil fuels (e.g., gasoline, diesel) to become a booming industr
  • The term “biofuels” encompasses a wide range of fuels, including vegetable oils, animal fats, ethanol, biodiesel (any oil or fat that undergoes transesterification to more closely resemble mineral-based fuel), and synfuel (fuel made from gasified organic matter, then liquefied to form fuel). The main common trait of all these fuels is that they are derived from organic biomass, rather than minerals.
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Biodiesel.org - FAQ - 0 views

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    Biodiesel (mono alkyl esters) is a cleaner-burning diesel fuel made from natural, renewable sources such as vegetable oils. Because it is renewable and domestically produced, biodiesel fits well under the Energy Policy Act of 1992, which is in place to help ensure national energy security through replacing imported petroleum products with domestic alternative fuels.
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Solar Panels: Tomorrow's Toxic Waste? | Mother Jones - 0 views

  • their products contain lead, a potent neurotoxin
  • contain cadmium, a known carcinogen.
  • nitrogen triflouride, a potent greenhouse gas
  • ...1 more annotation...
  • 1.5 billion pounds of solar panel waste containing 2 million pounds of lead and 600,000 pounds of cadmium will be disposed of in California alone.
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how wind energy works - 2 views

    • krolnik98
       
      good moving diagram
  • How Does Wind Energy Work? The diagram below shows a simplified version how a wind turbine converts the kinetic energy in the wind to electrical energy around the country. If you can't see the diagram you will need to download flash to see it. The wind blows on the blades and makes them turn. The blades turns a shaft inside the nacelle (the box at the top of the turbine) The shaft goes into a gearbox which increases the rotation speed enough for... The generator, which uses magnetic fields to convert the rotational energy into electrical energy. These are similar to those found in normal power stations. The power output goes to a transformer, which converts the electricity coming out of the generator at around 700 Volts (V) to the right voltage for distribution system, typically 33,000 V. The national grid transmits the power around the country.
  •  
    cool pics plus good info
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Environment « myFC - 0 views

  • Through the use of hydrogen together with fuel cell technology it is possible to achieve a radical decrease in local pollution of carbon dioxide, nitrogen oxides and particles from the transportation sector. Although the production of hydrogen from fossil fuels affects the environment it is an advantage that the carbon dioxide emissions can be separated already on the production site. This becomes evident when hydrogen is used as vehicle fuel, avoiding pollution from every individual vehicle.The only emission from a fuel cell reacting with hydrogen is pure water. The environmental gains are high, provided that pollution in the hydrogen production process is kept low. A fuel cell is approximately twice as energy efficient as a combustion engine if used in a regular car. The effect is that, using the same amount of energy, a fuel cell car can drive twice as far as a car with a combustion engine can.
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First Solar to build new solar plant for NRG | Reuters - 0 views

  • t is expected to be completed by the end of 2012, and will sell its output to UniSource Energy Corp's Tucson Electric Power under a 20-year contract
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New Platinum Could Mean Cheaper, More Efficient Fuel Cells - 0 views

  • Fuel cells are electrochemical devices that transform the chemical energy of a fuel into electricity generating water as a by-product.
  • Fuel cells use hydrogen and oxygen to complete their energy-producing reactions.
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Long Island, New York City Offshore Wind Project - 0 views

  • Advantages of Wind Power
  • goal for the State to meet 45 percent of its electricity needs through improved energy efficiency and renewable sources by the year 2015
  • renewable resource that could provide a significant amount of clean energy to consumers
  • ...1 more annotation...
  • Wind's relative low-energy density
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Wind Power News - The New York Times - 0 views

  • It is popular because it is abundant and provides many communities with a clean, local source of electricity
  • wind power could account for 20 percent of the nation’s electricity supply by 2030
  • two main problems. First, the wind does not blow all the time, so there must be backup power plants
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  • second problem with wind is that it sometimes blows the hardest in remote plains, far from cities that need the energy
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The Energy Story - Chapter 16: Wind Energy - 2 views

    • shannonlan97
       
      inside of turbine picture
  • Farmers have been using wind energy for many years to pump water from wells using windmills like the one on the right
  • When a boat lifts a sail, it is using wind energy to push it through the water. This is one form of work.
  • ...6 more annotations...
  • Wind is also used to turn large grinding stones to grind wheat or corn, just like a water wheel is turned by water power.
  • Wind can be used to do work. The kinetic energy of the wind can be changed into other forms of energy, either mechanical energy or electrical energy
  • n Holland, windmills have been used for centuries to pump water from low-lying areas.
  • Blowing wind spins the blades on a wind turbine – just like a large toy pinwheel.
  • If the wind gets too high, the turbine has a brake that will keep the blades from turning too fast and being damaged.
  • You can use a single smaller wind turbine to power a home or a school. A small turbine makes enough energy for a house.
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    "The blades of the turbine are attached to a hub that is mounted on a turning shaft. The shaft goes through a gear transmission box where the turning speed is increased. The transmission is attached to a high speed shaft which turns a generator that makes electricity."
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