most all biofuels used today cause more greenhouse gas emissions than conventional fuels if the pollution caused by producing these "green" fuels is taken into account, two studies published Thursday have concluded.
2 studies conclude that biofuels are not so green after all - The New York Times - 0 views
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The benefits of biofuels have come under increasing attack in recent months as scientists have evaluated the global environmental cost of their production. The new studies, published by the journal Science, are likely to add to the controversy.
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When you take this into account, most of the biofuel that people are using or planning to use would probably increase greenhouse gasses substantially," sai
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Alternative Fuels Data Center: Biodiesel Production and Distribution - 0 views
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great photo on the production of biodeisels
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he production process converts oils and fats into chemicals called long-chain mono alkyl esters, or biodiesel. These chemicals are also referred to as fatty acid methyl esters, and t
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Biodiesel is produced from vegetable oils, yellow grease, and tallow.
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good website to find most information on biofuels
My Library - 0 views
Wave (geography) - GCSE Wiki - 0 views
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Wave energy is generally affected by three main factors: Wind speed - higher wind speed means more wave energy, because the energy is transfered from the wind to the wave. Fetch - the distance of open water over which the wave has travelled across makes a big differenece on wave height and wave energy, as a longer fetch gives the waves longer to 'grow'. Wind duration - with a longer storm, the waves will be bigger.
Uses of Wind Energy | eHow.com - 2 views
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For hundreds of years mankind has been making use of the energy and power generated by wind. Whether it has been to travel the world, manufacture products, or in the modern age to generate electricity, wind has provided the means. And while there have been dozens of different methods over the years, new technology is still being invented to make even further use of this ancient power source.
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Windmills were one of the second most widespread uses of wind energy. The variety of uses that windmills were put to included grinding grain, as well as pumping water, up until the industrial revolution where the windmill was mostly replaced by the steam engine.
Wind Energy - 0 views
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Cons:
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The purchase and set-up of wind turbines can be expensive
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Wind turbines require certain constant speeds to be productive (13 mph for large turbines, 9 mph for small turbines)
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Research Report: Is there pollution from tidal energy - 0 views
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it offers almost unlimited potential at low costs and with no pollution.
qmstech's Websites on BonzoBox - 0 views
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hols
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Research Report: does solar power contribute to global warming - 1 views
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But only about 12 percent gets turned into electricity, and the rest is reradiated as heat--which contributed to Global Warming
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solar panels trap a greater amount of energy from the sun than the natural terrain (since it is black) and consequently retains that energy on earth contributing to the rising temperatures on the planet.
Wind Turbines Impact - 2 views
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The most noticeable impact a wind turbine places upon the environment is noise pollution.
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This is down to the noise, and many people compare the sound output of a wind turbine to a small jet engine.
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Another disadvantage regarding a wind turbine and it's impact on the surrounding environment can be expressed with the term "visual impact" or "visual pollution".
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Tidal Wave Energy - Quick Guide to Costs,Investment and How Tidal Generators Produce Ti... - 1 views
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.In this form of Tidal Power,a Barrage is built near the coast where water is collected during the periods of high tides.During low tide the barrage allows the water from the reservoir to move towards the ocean or sea.The potential energy of the water at a higher level is converted to electricity using Turbines.
Research Report: does solor powers pollution than CO2 when compared to fossil fuels? - 0 views
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But as much as it poses a health risk, a group of researchers from the National Renewable Energy Laboratory point out that the relative risks are still light when compared to the use of fossil fuels
Energy waves lesson - 0 views
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Here’s rule one when it comes to waves....the waves move, the particles don’t. The wave moves from place to place. The wave carries the energy from place to place.
Wind Development - 0 views
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Negotiating power purchase agreements
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In some states, where the electricity market has been deregulated, it is possible for the owner of a wind project to sell electricity directly to customers. However, wind developers usually sell their electricity to electric utilities, which sell the electricity to customers. T his is usually done by negotiating a power purchase agreement, which is a contract requiring a utility to buy the electricity from a wind farm at a certain price over a certain period of time. In some cases, an alternative arrangement is reached, in which the developer owns a share of the project long enough to mak
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In some states, where the electricity market has been deregulated, it is possible for the owner of a wind project to sell electricity directly to customers. However, wind developers usually sell their electricity to electric utilities, which sell the electricity to customers. T his is usually done by negotiating a power purchase agreement, which is a contract requiring a utility to buy the electricity from a wind farm at a certain price over a certain period of time. In some cases, an alternative arrangement is reached, in which the developer owns a share of the project long enough to make a specified amount of money. After this point, the ownership in the project “flips,” and the utility ends up owning the project.
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Infrastructure Battle: Renewable Tidal Energy vs. Telecommunications - 1 views
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first tidal energy turbines
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Both technologies require room for periodic ship-borne maintenance and repair access, with subsurface equipment which could impinge on the other facility if they're too close. And if one of the turbines breaks, as happened in 2010 with an earlier tidal turbine in the Bay of Fundy, PC Landing worries it could damage the nearby cable.
Research Report: what are the best uses for solar power - 1 views
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A quick search on TreeHugger shows that ' solar power ' most often occurs in connection with producing electricity and only secondarily in connection with solar water heaters
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Compared to electrically heated Water , Solar Water Heating is 57% of the internal rate of return, the scientists found
Wind Energy | Energy and Global Climate Change in New England | US EP - 0 views
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Winds are caused by the interaction of the uneven heating of the atmosphere with the uneven surface of the earth, and the earth’s rotation
Biofuels: Journey to Forever - how to make your own clean-burning biofuel - 0 views
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history on bio fuels
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but if everyone had cars like ours, there'd be no need for roads."
Solar Power - 0 views
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