Vertical Axis Wind Generators (VAWT's)
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Main rotor shaft in vertical direction.
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Operates with wind from any direction.
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Designed for low wind speed.
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Operates at a low RPM.
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Lower Vibration levels.
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Small noise levels.
Horizontal Axis Wind Generator's (HAWT's)
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Main rotor shaft in the horizontal direction.
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Small generators are pointed into the wind by a simple wind vane.
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Requires a relatively high wind speed.
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Operates at a high RPM.
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Higher vibration levels.
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Can be noisy.