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| How does a wind-powered device function? | ||
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The rotor blades catch the wind and pass the performance on the hub. The hub is connected with a slow-running drive shaft (the following sections are appropriate in a so-called gondola = housing). This wave contains hydraulic lines, which supply the air brakes. The transmission between the slow-running and the high-speed drive shaft causes that the high-speed wave runs approx. 50times faster than the first wave. The high-speed drive shaft propels an electrical generator, which brings an output of 500 - 1500kWh. The high-speed wave is also equipped with a mechanical disc brake, which is used, if the air brake fails or the system must be repaired. The tower of the wind-powered device carries the gondola and the rotor. Usually a high tower is used as with rising height the wind velocity increases. A modern wind power station has a tower of 40-60 meters height. The gondola is not fix connected with the tower. It can align itself and the rotor after the wind and thus always profit from the optimal wind. |
 Wind power station (CH)
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| Behind a wind tower develops a wind tail, which indicates a smaller wind velocity than the wind before the tower. This wind tail is called also wake. So that the rear towers in a wind power station (wind park) can produce electricity much as the front, they must be rather far from each other stationed because of the wake. |
Wind energy generallyMode of operationThe historyThe wind |
| Power stations: Wind energy: How does a wind-powered device function? |
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A ThinkQuest Project by Team 26663 |