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BP Alternative Energy - wind power - how it works - 0 views

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    An interactive video about wind energy.
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Discover Solar Energy ADVANTAGES DISADVANTAGES | PROS and CONS of Solar Energy - 4 views

  • Solar Energy systems are virtually maintenance free and will last for decades.
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Biofuels - climate hit or climate hype? - Climate Action Programme - 0 views

  • Biofuels are renewable liquid or gaseous transport fuels derived from biomass (bacterial, plant or animal material).
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STELR :: wind ENERGY - 1 views

  • STEP 1: Moving air pushes against the blades of the turbine, which are tilted to the direction of the wind. This makes the blades spin. In the process, some of the kinetic energy of the moving air is transformed into the mechanical energy of the spinning blades. (The wind still has some kinetic energy as it flows away from the turbine.) STEP 2: The shafts and the gears inside the gear box transfer the mechanical energy of the turbine to the generator. (The gears make the drive shaft to the generator spin faster than the shaft connected to the blade hub.) STEP 3: The generator transforms mechanical energy into electrical energy.
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    steps to converting win power to electricty
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Ch 12 Page 73: Sustainable Energy - without the hot air | David MacKay - 0 views

  • In open water, waves are generated whenever the wind speed is greater than about 0.5 m/s.
  • First, let’s clarify where waves come from: sun makes wind and wind makes waves.
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    "First, let's clarify where waves come from: sun makes wind and wind makes waves."
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Lockheed Martin · Wave and Tidal Energy - 0 views

  • Tremendous potential exists for clean energy in waves and tides. Lockheed Martin Mission Systems and Sensors (MS2) is leveraging decades of experience in designing and developing maritime systems into wave and tidal power systems. To do that, we have strategic relationships with key wave and tidal power technology providers. They will provide the technology to convert waves and tides into energy, and MS2 will provide the expertise to help make the systems work in harsh ocean environments and scalable for large-scale production. Wave power generates electricity using special buoys that use the rising and falling of ocean waves to generate electricity. MS2 is partnering with Ocean Power Technologies, Inc. (OPT) and WaveBob LLC to develop their respective wave energy systems for use in future utility-scale power generation projects. MS2 provides its expertise in systems integration, lean manufacturing, and test and optimization analysis to enhance OPT's and Wavebob’s wave power generation technology to utility-scale. Tidal power generating systems use underwater turbines designed to capture the kinetic motion of ebbing and surging ocean tides to produce power. MS2 provides design and manufacturing support to Singapore-based Atlantic Resources Corporation (ARC), which is testing its tidal turbines at the European Marine Energy Centre in Orkney, Scotland. MS2 is also exploring related technologies that can be adapted to shallow and low-rate tidal flows.
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    what is used to make it work
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Fuel Cell Vehicles - 0 views

  • 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 long has biofuels been around - Google Search - 0 views

  • Biofuels have been around as long as cars have. At the start of the 20th century
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How Are Hydrogen Fuel Cells Affecting the Environment? | eHow.com - 0 views

  • por and a small amou
  • Unlike internal combustion and the burning of fossil fuels, hydrogen fuel cells do not produce particulates or emissions other than water vapor and a small amount of carbon dioxide.
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    "hydrogen fuel cells do not produce particulates or emissions other than water vapor and a small amount of carbon dioxide."
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Solar power - Sustainable green energy to protect our economy and environment | PARTHA ... - 2 views

  • A Solar Energy system can operate entirely independently, not requiring a connection to a power or gas grid at all. Systems can therefore be installed in remote locations, making it more practical and cost-effective than the supply of utility electricity to a new site.
  • A Solar Energy system can operate entirely independently, not requiring a connection to a power or gas grid at all. Systems can therefore be installed in remote locations, making it more practical and cost-effective than the supply of utility electricity to a new site.
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    "It offers much more self-reliance than depending upon a power utility for all electricity."
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Tidal Energy Ltd » The Technology - 0 views

  • Tidal energy is a form of hydropower that converts the energy of the tides into electricity or other useful forms of power. The tide is created by the gravitational effect of the sun and the moon on the earth. Tidal energy is therefore a predictable form of renewable energy, which can be harnessed in two forms:
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    what it is.
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Tidal Energy for Kids - 0 views

  • As far as producing electricity goes, tidal energy is one of the cheapest kinds.
  • Since the tidal cycle repeats itself every 24 hours, there is a guarantee that power can be produced this way every day of the year.
  • can help protect delicate coastal areas from storm damage, as well
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  • can protect against erosion
  • Even though tidal energy does not produce any kind of pollution, the barrages completely change the coastline. Many animals and birds make their homes on the mudflats around tidal basins. When the tidal energy plants flood these areas, the habitats of these animals are destroyed. Holding the water back also causes silt to build up inside the tidal basin and can cause the released water to take longer to clear from dirt and materials. This can keep the water around the coastline from settling and becoming clear as quickly as it usually does. There is also evidence that using tidal power plants can change the migration patterns of many ocean creatures.
  • Other people think that since tidal energy plants can only produce electricity for about ten hours every day,
  • it is not worth the danger to plants, animals, and ecosystems.
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Tidal Power - 1 views

  • Tidal power is a means of electricity generation achieved by capturing the energy contained in moving water mass due to tides. Two types of energy can be extracted: kinetic energy of currents between ebbing and surging, and potential energy from the difference in height (or head) between high and low water marks.
  • Tidal power schemes do not produce energy 24 hours a day. A conventional design, in any mode of operation, would produce power for 6 to 12 hours in every 24 and will not produce power at other times
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Biodiesel Fuel Car, Biofuels Car, Biodiesel Fuel | GreenStudentU.com - 0 views

  • using biodiesel fuel reduces carbon dioxide emissions by 78% when compared to regular petroleum fuel.
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STEP - Heating houses by sunlight-How sustainable is solar power generally? - 0 views

  • Solar energy does little to harm the environment.
  • Even when the sun does not shine because of cloud or dust, its diffuse rays can still be used to produce electricity or heat.
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The Biofuels FAQs: The Facts About Biofuels: Ethanol - 0 views

  • Biodiesel consumption was much lower, about 250 million gallons in 2006
  • which requires an annual increase in biofuels use to 7.5 billion gallons by 2012.
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