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Wind energy is the new energy technology today. It is considered to be the most cost competitive type of energy out there against the cost of fossil fuel. With prices soaring in the fossil fuel world of energy it is more feasible to go with the natural use of wind energy.
Wind is a power of simple air in motion. It is natural energy that is developed by the sun heating the earth’s uneven surface. The earth’s surface is made of different types of land and water. The suns heat is absorbed by the land and water and is heated at various rates
Long ago people have used wind as energy to generate machines or even use as transportation on sailing ships. Windmills were used to grind wheat and other grains, to pump water, and cut wood at saw mills back in time.
Wind energy is used today, mainly for electricity.
How is wind energy made?
There are wind machines that are much like windmills that are used. The wind generates electricity by the use of turbines. Turbines are wind machines that collect the kinetic energy from wind. The towers range with various heights. There are two to three blades that are attached to a hub that is mounted on a shaft that forms a rotor. There is a gear transmission box that the shaft goes through this helps with the turning speed to increase. There is a high speed shaft that turns a generator that the transmission is attached to. There is a process called lift that is a major role in making the turbine rotate. As the wind blows there is a low pressure air pocket that is at the downwind side of the blade in return the blades are turned by the pulling of the air pocket. The force against the front of the blade is called a drag. To have both the lift and drag makes the rotor to spin and then shaft will then spin a generator that will produce the electricity.
If there is a high speed gust of wind there is a brake that will help the blades not to turn to fast and get damaged.
Today there are two kinds of turbines that are used. The difference between the two is the direction of the rotating shaft. Vertical axis turbine and horizontal axis turbine. The horizontal wind turbines use angled propeller blades that create friction when the wind is blown on them which makes them turn. Vertical turbines are as the same design as the horizontal it just has a different form of propellers and are tipped on their axis.

More and more people are looking toward wind energy since it is such a good source for renewable electricity. Some turbines are used to power homes or businesses and there are many wind farms that are used to supply electricity for a small community. Wind energy is a natural way to have electricity without the high cost of fossil fuel. Jason Grace on behalf of the BascoTec Internet Limited Technologie Park 13 33100 Paderborn Germany

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