Earth is composed mainly of bodies of water---about 71 percent of the earth's surface is water. Ninety-seven percent of that is found in the oceans. Because the earth's surface is curved, the sun heats it unevenly. This causes winds to blow across the water and generate waves. The sun and moon also exert their gravitational pull on the earth, triggering wave-producing tides. Wave motion energy can be harnessed and generated into electricity.
Solar Power International 2012 - 0 views
Wind power - Wikipedia, the free encyclopedia - 0 views
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Sailboats and sailing ships have been using wind power for thousands of years, and architects have used wind-driven natural ventilation in buildings since similarly ancient times. The use of wind to provide mechanical power came somewhat later in antiquity. The windwheel of the Greek engineer Heron of Alexandria in the 1st century AD is the earliest known instance of using a wind-driven wheel to power a machine.[15][16].
Solar energy 'cheaper than fossil fuels in 5 years' - 0 views
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Speaking to Silicon.com, the author of The Age of Intelligent Machines, said that nanotechnology could help solve the world's energy crisis and make solar technology cheaper.
Tidal Power - 0 views
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A dam-like structure is constructed across an estuary to trap a high tide of water and then let it pass through turbines to generate electricity. The water flow can generate electricity on the falling tide only, or on the falling and rising tide.
Soymet to distribute biofuels for engines - 0 views
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All Soymet biofuel products have zero petroleum toxins and lower emissions. Primary byproducts are carbon dioxide and water vapor. These biodiesel fuels burn cleanly and produce the same amount of energy as conventional diesel fuels.
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Supposedly cleaner but still gives off emissions
File:World energy consumption by type 2006.png - Wikimedia Commons - 3 views
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Great graph on energy use in each area.
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current
Biofuels | BP - 0 views
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Biofuels
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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
Group items tagged pollution - qmstech2 | Diigo Groups - 0 views
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read this
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The major challenge to using wind as a source of power is that it is intermittent and does not always blow when electricity is needed. Wind cannot be stored (although wind-generated electricity can be stored, if batteries are used), and not all winds can be harnessed to meet the timing of electricity demands. Further, good wind sites are often located in remote locations far from areas of electric power demand (such as cities).
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Although wind power plants have relatively little impact on the environment compared to fossil fuel power plants, there is some concern over the noise produced by the rotor blades, aesthetic (visual) impacts, and birds and bats having been killed (avian/bat mortality) by flying into the rotors. Most of these problems have been resolved or greatly reduced through technological development or by properly siting wind plants.
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Energy Resources: Biomass - 0 views
Group items matching "history geothermal" in title, tags, annotations or url - qmstech2... - 0 views
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The word geothermal comes from the Greek words geo (earth) and therme (heat). So, geothermal energy is heat from within the Earth. We can recover this heat as steam or hot water and use it to heat buildings or generate electricity. Geothermal energy is a renewable energy source because the heat is continuously produced inside the Earth. ... Cancel
How Fuel Cells Work | ClearEdge Power - 1 views
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About the size of a refrigerator, the ClearEdge Plus fuel system hooks up to your natural gas supply and through its fuel processor, draws the hydrogen molecules out. Then, through an electrochemical process that combines the hydrogen molecules with oxygen, the unit generates up to 5kW of electricity for use throughout your entire home and allows you the control to select specific critical circuits you want to remain "up" even when the grid is "down."
World_energy_consumption_by_type_2006.png (763×277) - 0 views
about 6.27% of energy is generated by hydrogen fuel cells
Hydrogen FAQ - 0 views
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The cost of hydrogen per mile to power a fuel cell electric vehicle is approximately competitive with the cost of gasoline at $2.30/gallon. This assumes that the hydrogen is made by reforming natural gas at the fueling station with existing commercial hydrogen fueling equipment in low production volumes (10 units). With larger scale production, we estimate that hydrogen will cost less per mile than gasoline selling at $1.50/gallon.
Fuel Cell Vehicles - 0 views
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FCVs run on hydrogen gas rather than gasoline and emit no harmful tailpipe emissions.
Biofuels | What are bio fuels and how are biofuels made - 0 views
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Bio fuels are a viable alternative to fossil fuels.
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Some examples are that of biodiesel, which entails growing crops that contain high amounts of natural oil then through a process of hydrogenation or refining a more compatible bio diesel, substitute is created.
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These are examples of first generation biofuels and due to their nature they may or may not be long-term economically or environmentally viable.
Climate Inc. » Cleantech's Unsung Heroes - 0 views
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graph
fuel cells - 3 views
fuell cells
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