Patent ID: 6357218
Filing Date: 2002-03-19
Classification: F01K

Abstract:
A gas turbine cycle comprising:a gas turbine system including a compressor for compressing air, a combustion system for receiving compressed air from the compressor and a turbine for converting the energy of the combustion mixture that leaves the combustion system into work; a heat recovery system for receiving exhaust gas from the gas turbine; a first flow path for at least one of water and steam at elevated pressure including a first heat exchange flow path disposed in heat exchange relation to said exhaust gas flowing through said heat recovery system, thereby to produce an at least partly evaporated fluid stream; a second flow path for at least one of water and steam defining a power augmenting flow path operatively coupled to said first flow path for receiving flow therefrom, said second flow path including a second heat exchange flow path disposed in heat exchange relation to said exhaust gas flowing through said heat recovery system, thereby to produce superheated steam, said second flow path being operatively coupled to at least one of the gas turbine compressor discharge and the combustion system of the gas turbine for increasing the mass flow of fluid thereinto; a third flow path for water defining a recirculating flow path operatively coupled to said first flow path for receiving fluid therefrom and for recirculating said fluid to said first heat exchange flow path; and a heat rejector system for selectively cooling fluid flowing through said third flow path thereby to reduce a temperature of said fluid upstream of said first heat exchange flow path.