Posted on 06 April 2010
Tags: Aerodynamics, airfoil, airplane, alternate energy sources, alternative energy equipment, atmosphere, blades, downwards, drag, Electricity, energy, force, generate, ground, height, lift, pressure, Renewable Electricity, renewable energy, renewable source of power, renewable technology, renewable wind energy, size, sun, turbine, Wind Energy, wind turbine basics, wind turbines, windmill
Nowadays, windmills don’t just rely on the wind’s force to push the blades into motion in order to produce energy. Modern turbines use more complicated and refined aerodynamic principles to make use of the wind’s energy most efficiently.
The two basic aerodynamic forces that work together in wind-turbine rotors are lift, which acts perpendicular to the direction of wind flow; and drag, which acts parallel to the direction of wind flow.
The blades of a turbine are shaped just like airplane wings, using an airfoil design. One surface of the blade is a little rounded, whereas the other side is quite flat.
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Posted on 17 February 2010
Tags: Green Electricity, land, noise, Renewable Electricity, renewable energy generation, Wind Energy, wind energy industry, wind energy resource, wind energy source, wind energy system, wind energy turbines, wind farms, wind generator, Wind turbine engineers, wind turbines, windmill
Wind energy is being used as a reliable source of energy for a long time. The Babylonians and Chinese used wind power to pump water for irrigating crops 4,000 years ago, and sailing boats were around long before that.
Wind power was used in the Middle Ages, in Europe, to grind corn, which is where the term “windmill” comes from. Following are some of the advantages and disadvantages of wind energy:
Advantages
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Wind is absolutely free and wind farms need no fuel to generate electricity.
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Wind energy produces no waste or greenhouse gases.
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The land beneath the wind turbines can usually still be used for farming.
Posted on 24 December 2009
Tags: California, Cape Cod, China, Denmark, Electricity, Europe, germany, Lowa, Massachusetts, Minnesota, Mojave Desert, Montana State, Offshore Wind Power, Oklahoma, Pacific Ocean, power plant, spain, Tehachapi, Tehachapi Mountain, Texas, United States, Wind Power Plants, Wind Production, Wind Speed Variation, windbreaks, windmill, windy place
Careful Planning is needed for Wind Power Plants. Just building a windmill in a windy place doesn’t mean that operating of wind power plant is simple. It’s necessary for wind power plant owners to plan carefully where to locate their machinery and also to check out that how fast and how much wind blows at proposed locations.
As it’s a rule that wind speed increases with altitude and over open areas that have no windbreaks. Good places for wind plants are the smooth rounded hills, open plains or shorelines and mountain gaps that produce wind funneling.
Wind Speed Variation
Throughout the United States wind speed varies and it also varies from season to season. As in Tehachapi, California, from April to October wind blows more than winter season. Wind blowing between those months is more because of the extreme heating of the Mojave Desert during the summer months. The hot air in desert rises and the cooler air from Pacific Ocean with great speed passes the Tehachapi Mountain to replace the vacuum. While in Montana State its totally different there wind blows more in winter.
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