System to cool the nacelle and the heat generating components of an offshore wind turbine
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United States of America Patent
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Sep 8, 2015
Grant Date -
Oct 25, 2012
app pub date -
Apr 19, 2011
filing date -
Apr 19, 2011
priority date (Note) -
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Abstract
A system to cool the air inside a nacelle and the heat generating components housed in the nacelle of an offshore wind turbine is presented. An upper cooling circuit is disposed in the nacelle. A reservoir is disposed below the upper cooling circuit and has a lid that freely rotates about a vertical axis of the reservoir along with an inlet and an outlet pipe of the upper cooling circuit as the nacelle yaws, the vertical axis of the reservoir being coincident with a yaw axis of the nacelle. A lower cooling circuit is disposed below the reservoir. Coolant is circulated through the upper cooling circuit using a cooling pump disposed between the nacelle and the upper cooling circuit. The upper cooling circuit carries heat from the heat generating components and from the air inside the nacelle to the reservoir. The lower cooling circuit carries heat from the reservoir to the bottom of the tower and dissipates the heat to the sea water through a heat exchanger that is cooled by the sea water.
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