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Abstract: The
wind loss denotes the energy lost due to the friction between the
rarefied gas in the vacuum chamber and the energy storage flywheel
rotating at a super high speed. The theoretical formula is deduced to
draw the wind loss at the cylindrical side wall and the end side of the
flywheel. The method of cut ting down the wind loss is presented
according to the calculation and analysis on the wind loss. The
calculated wind loss is accordance with the test result from the
experiments on the flywheel energy storage system. The wind loss of the
composites flywheel in test would be small enough to be ignored on the
condition that the pressure is lower than 0.01 Pa in the vacuum chamber
containing the flywheel.
Key word: Energy
storage flywheel Wind loss
CLC No: TH133
清华大学基础研究基金资助项目(JC1999030).
Received 20040422, received in revised form 20041220
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