Water augmented regeneration (WAR) turbine system and cycle

摘要

A gas turbine system ( 100 ) includes a compressor ( 110 ) for receiving air and producing compressor discharge air, a combustor ( 120 ) for combusting an oxygen comprising gas flow including the discharge air and a fuel into a hot gas flow, and a turbine expander ( 130 ) generating output power from the hot gas flow and providing a hot exhaust gas flow. An extractor ( 135 ) is provided for splitting the discharge air into a direct flow portion ( 121 ) which directly reaches the combustor ( 120 ) and an indirect flow portion ( 122 ). A mixing device ( 140 ) receives the indirect flow portion ( 122 ) and mixes it with a water flow ( 145 ), either in the form of water or steam, to produce a water enhanced indirect flow portion ( 150 ). A recuperative heat exchanger ( 155 ) heats the water enhanced indirect flow portion ( 150 ) using heat from at least a portion of the hot exhaust gas flow. The heated water enhanced indirect flow portion ( 158 ) is then reintroduced into the oxygen comprising gas flow.