Wind Power - By: Anna Williams

Wind energy might be invisible to the eye, but it can powerful as well as useful, when correctly harnessed.

Wind has been a source of energy for a long time. It was used by the Chinese and by the Babylonians 4,000 years ago, to power pumps for irrigation. In The Middle Ages, Europeans use windmills to grind corn.

At present, wind power can be harnessed to produce electricity.

This is basically done by erecting a tall tower, with a propeller on top. The wind makes the propeller rotate, and the rotating mechanisms then in turn generate electricity.

A wind farm is an area with several such towers operating, which, combined, produce enough energy to provide power to a whole area. The more wind towers there are, the more electricity is produced.

Location is key to maintaining a productive wind farm. The area should have steady, strong winds, blowing at all times. Ideal regions include coastal areas, open plains, hills tops, and mountain gaps. Some wind farms are located offshore. The average wind velocity should be approximately 25 km per hour.

Aside from the location, the size of the propeller is an essential factor as well. The bigger the propeller, the larger the volume of wind that can be harnessed, in order to extract energy. The blades can be angled, so as to cope best with the wind speed.

Some wind towers are designed to turn their propellers with the direction of the wind. There designs utilize vertical turbines.

The height of the towers should also be set to the wind's strongest point. In some areas, the land below is used as farmland. That maximizes the space and productivity of the area and ensures that the land is not be wasted at all.

Pros and Cons of Using Wind Power

There are advantages as well as disadvantages to using wind power.

When the wind isn't blowing, a wind farm won't produce power. Another disadvantage is that many suitable areas have a high real estate value, especially in the case of coastal lots. Some don't like it when the wind towers block scenery, and consider windmills as eyesores. Wind generators are noisy, which can be very disturbing to some.

Wind power has its advantages as well. Some wind farms are tourist attractions and bring visitors into an area. Remote areas which are off the main energy grids can use the wind, for a supply of electricity to their communities. The power itself is free, and the turbines don't any fuel power in order to operate. It produces no damaging side effect, and emits no dangerous gases into the air.

While it is true that there are drawbacks to using this form of energy, however, it is also true that the disadvantages involved with the uses of polluting fossil fuels are far more harmful and problematic in the long run.

About the Author

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