GAS TURBINE COOLING SYSTEM, GAS TURBINE PLANT WITH GAS TURBINE COOLING SYSTEM, AND METHOD OF COOLING GAS TURBINE HIGH-TEMPERATURE PART

摘要

PROBLEM TO BE SOLVED: To effectively use heat of compressed air while cooling a high temperature part of a gas turbine, using the compressed air extracted from a compressor of the gas turbine.;SOLUTION: A gas turbine cooling system 40 includes: an organic Rankine cycle 50 including a turbine 52, a cycle medium CM circulating in the organic Rankine cycle 50 while repeating condensation and evaporation, the turbine 52 being driven by the evaporated cycle medium CM in the organic Rankine cycle 50; an extraction line 41 extracting compressed air CA from a compressor 11 of a gas turbine 10; a cooling device 60 cooling the compressed air CA while heating and evaporating the cycle medium CM condensed in the organic Rankine cycle 50 using heat of the compressed air CA passing through the extraction line 41; and a cooling air line 42 introducing the compressed air CA cooled by the cooling device 60 to a high temperature part of the gas turbine 10.;COPYRIGHT: (C)2015,JPO&INPIT