Power generation plant with compressed air energy system
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United States of America Patent
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Jun 8, 2004
Grant Date -
Jul 17, 2003
app pub date -
Jan 11, 2002
filing date -
Jan 11, 2002
priority date (Note) -
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Abstract
A power generation plant with a compressed air energy storage system comprises a means to reduce the pressure of air extracted from a compressed air storage cavern for the use in a combustion turbine. The means to reduce the air pressure comprises at least one expansion turbine and means to control the size of pressure reduction. Furthermore, the expansion turbine is arranged on a rotor shaft that drives a generator. The means for pressure redact, according to the invention, avoid power losses and provide an increased overall efficiency of the power generation plant.
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