Wind Turbines

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There are two common types of wind turbines, Vertical Axis wind Turbines (VAWT) and Horizontal Axis Wind Turbines (HAWT). A vertical axis turbine looks like a helical sweep and spins on a vertical axis to generate its energy, A HAWT rotates on a horizontal axis and will commonly have either two blades or three.

In its simplest form a wind turbine operates the opposite of a fan. Instead of using electricity to power a set of fans or blades to create a flow of air to cool, a wind turbine (generator) will use the winds kinetic energy in order to produce mechanical power, which in turn can be converted into usable electricity.

The blades on a wind turbine are specifically designed to capture the winds kinetic energy in such a way that it causes the blades to rotate, turning a shaft that runs through the nacelle (turbine head), rotating a generator.

Unknown to many, wind is a form of solar energy and is a bi product of the uneven heating of the atmosphere by the sun. Other factors that cause its creation are the irregularities of the earth’s surface, and its rotation.

Wind turbines have been used for more than two millennia by man to pump water and grind grain. In the last decade wind turbines have been more readily used for the generation of electricity to power motors, light our houses and create a sustainable energy source.

Vertical Axis Wind Turbine (VAWT)

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Horizontal Axis Wind Turbine (HAWT)

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