Wind Power, Equipment Types:
Axes
There are two primary types of wind turbines: horizontal and vertical.
Equipment Types:
Horizontal-Axis
Horizontal-axis wind turbines have blades that spin in a vertical plane like
airplane propellers. The blades have a special shape so that when wind passes
over them, it moves more rapidly over one side, creating a low pressure area
behind the blade and a high pressure area in the front it. The difference
between these two pressures creates a force which causes the blades to spin.
Vertical-Axis
The blades of vertical-axis wind machines work on the same principle as
horizontal-axis machines: the shape of the blades causes a pressure difference
when the wind blows over them and this causes the blade assembly to spin. In
a vertical-axis machine, however, the blades spin in a plane that is parallel
to the ground, like an eggbeater.
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Applications