INTAKE AIR COOLING DEVICE FOR GAS TURBINE, GAS TURBINE AND GAS TURBINE COMBINED CYCLE POWER GENERATION PLANT EQUIPPED THEREWITH, AND OUTPUT INCREASING METHOD

摘要

PROBLEM TO BE SOLVED: To provide an intake air cooling device for gas turbine which can appropriately respond to electricity demand while efficiently cooling sucked air, and a gas turbine combined system power generation plant.;SOLUTION: An intake air cooling device for a gas turbine which is employed for a gas turbine consisting of a compressor, a combustor and a turbine, includes a heat exchange means which can cool sucked air sucked into the compressor from the outside and a cooling control part 40 which cools the sucked air by the heat exchange means according to demand output W_PR of the gas turbine for power generation. The cooling control part 40 compares the demand output W_PR with the dew-point output W_PDT when the compressor inlet temperature T_IN of the sucked air in the compressor inlet is operated at the dew-point temperature T_d, and sets the compressor inlet temperature T_IN lower than the dew-point temperature T_d on condition that balance associated with power generation satisfies a prescribed standard on the basis of a set fuel price P_F when the demand output W_PR is larger.;COPYRIGHT: (C)2011,JPO&INPIT