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Sources of Clean Energy - Essay Example

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Nowadays the problem of environment protection and rational use of its resources has become a question of vital importance. According to McGee, 'sustainable alternative energy is becoming attractive as oil costs rise and the negative side effects of traditional energy systems begin to become apparent1'…
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Sources of Clean Energy

Download file to see previous pages... So the point is that the only way to avoid the global power crisis in future is to follow the policy of natural recourses saving and to use renewable sources of energy, such as solar energy, geothermal energy, wind power, water power, and biofuel. So renewable energy is 'energy derived from resources that are regenerative or for all practical purposes can not be depleted2'.
Wind - is one of the renewable energy sources. The wind is considered by experts as one of the most perspective energy sources, capable to replace not only traditional sources, but also nuclear power. Production of the electric power by means of wind has a number of advantages:
But as well as in other sources of energy usage, we can find some negative aspects in usage of wind power. The essential defect of a wind power is its intermittency. Moreover the usage of wind power may lead to a kind of environmental pollution, which existence and importance are often undervalued. It is a noise pollution. In Ohio one of the leading American companies has constructed the world's largest wind power plant with rating power 10 MW. This massive construction with the general height over hundred meters has worked just for some days and after has been sold for demolition at the price of 10 dollars per ton. The thing is that the life in radius of several kilometers has become just impossible. And question is not only in audible noise and vibrations. There is a very strong infrasonic, low frequency component in this noise. The point is that an infrasound on the frequency of 7 Hz conterminous with an alpha rhythm of a human's brain at sufficient intensity is very harmful. It may cause the strongest health disorders. Moreover the usage of wind turbines may result desertification of the grounds and in this case animals would have to leave their traditional areas of living. So the biodiversity may be decreased.
Solar Power
The leading clean energy source is the solar power. The energy of a solar radiation coming on the surface of our planet, almost in 40 times exceeds all energy consumed by the mankind. Every second the Sun gives the Earth 80 thousand billion kilowatt of energy, that in some thousand times more, than all the power stations of the world produce all together.
Now mankind use only insignificant part of a solar energy, as existing solar batteries have rather low efficiency and are very expensive to produce. However we should not refuse from this practically inexhaustible source of clean energy. According to the statements of experts, this source could cover all needs of mankind for energy thousand years forward. The solar power is the most powerful and accessible of all kinds of non-traditional, renewable energy sources. Sunlight is not only inexhaustible, but also absolutely clean energy source having enormous energy potential. Nevertheless the usage of solar power also has own disadvantages.
Solar energy is distributed on the big area, or in other words, has low density. That is why any plant for direct use of solar ...Download file to see next pagesRead More
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