Harnessing Wind

1 Posts
May 13, 2009 06:08 am
Harnessing Wind

The wind is a natural source of energy and power. Wind blows when the land gets heated up by the sun unevenly making the air just above the land, rise and expand. When the hot air above the land expands, its place is filled in by the heavier and cooler air above it. This makes the wind blow. So as long as the sun shines, the wind will continue to blow.

The wind energy can be tapped with the help of wind turbines. The winds created as a result of the temperature difference flows over the blades of the Windmill or wind turbine to make it rotate. The rotating wind turbine helps in turning the generator that produces the electricity. The wind mill or turbine generates wind power by conversion of wind kinetic energy into mechanical.
The wind energy industry has been growing at the rate of 28% a year for the past five years, and if growth trends continue at this pace as is expected, wind capacity will double about every three or four years. By 2010, the World Wind Energy Association expects 160GW of capacity to be installed worldwide, up from 73.9 GW at the end of 2006, implying an anticipated net growth rate of more than 21% per year. All this has led to a huge increase in the wind investments

May 15, 2009 03:07 pm
Re: Harnessing Wind

For thousands of years the human race did not need all of these energies to live on the planet Earth. It has only been in the last 150 years that this has occurred. What happen to the human race? Its been said that good mental health is relative time and place. For example In his own time and place Hitler was perfectly sane even though the rest of the world believed him to be insane. We believe George W. Bush to be perfectly sane but I doubt thats true of Osama bin Laden and the members of al-Qaeda. I wonder what Hitler would think of George W. Bush? Take these men at out of their time and places, change them around and you can imagine what would happen to each.

Pity about Earth.
49 Posts
May 18, 2009 10:23 pm
Re: Harnessing Wind

for thousands of years people went to the bathroom outside and took 8 months to cross America. Doesn't make it better.
with one solar flare the earth can heat up to more than we could take. We can't control the sun or the temp. of the earth. Only in our homes with the least expensive energy as possible.

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