JPS57122107A - Combined cycle generator - Google Patents

Abstract

PURPOSE:In a system where a gas turbine power generating equipment and a cold heat power generating equipment are combined, to increase the output of the gas turbine by making the temperature of the suction air of the gas turbine coolable while to save the energy by constituting each equipment in the heat exchange relation. CONSTITUTION:A heat exchanger 16 is provided in an LNG system for delivering LNG in an LNG tank 9 through a pump 10 at the air suction port of a gas turbine 1 thus to make the atmospheric air to be sucked in mass to the gas turbine 1 coolable. As the heat exchanger corresponding to the carburetor and the heater in a cold heat power generating system, heat exchangers 17 and 18 are provided at the exhaust gas exit of the gas turbine 1 to make the thermal energy in the exhaust gas utilizable as the heat medium. When starting, the minimum flow of LNG is extracted from a tank 9 through a pump 19 and boosted then fed to a heat exchanger 20. Said heat exchanger 20 will extract the high temperature air by the compressor 3 to use as the heat medium then the vaporized gas is fed to the gas turbine 1 and fired.