Power augmentation of combustion turbines with compressed air energy storage and additional expander
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United States of America Patent
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app pub date -
Jul 11, 2008
filing date -
Jan 25, 2007
priority date (Note) -
Abandoned
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Abstract
A combustion turbine power generation system (10) includes a combustion turbine assembly (11) including a main compressor (12) constructed and arranged to receive ambient inlet air, a main expansion turbine (14) operatively associated with the main compressor, combustors (16) constructed and arranged to receive compressed air from the main compressor and to feed the main expansion turbine, and an electric generator (15) associated with the main expansion turbine for generating electric power. A compressed air storage (18) stores compressed air. A heat exchanger (24) is constructed and arranged to receive a source of heat and to receive compressed air from the storage so as to heat compressed air received from the storage. An air expander (28) is associated with the heat exchanger and is constructed and arranged to expand the heated compressed air to exhausted atmospheric pressure for producing additional electric power via an electric generator associated with the expander and to permit only a portion of airflow expanded by the air expander to be injected, under certain conditions, into the combustion turbine assembly.
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