GAS TURBINE APPARATUS

摘要

A gas turbine apparatus (2) has an air compressor (20) for compressing air, a combustor (21) for combusting the compressed air, a turbine (22) rotatable by a gas discharged from the combustor (21), and a recuperator (23) for exchanging heat between the air supplied from the air compressor (20) and an exhaust gas discharged from the turbine (22). The gas turbine apparatus (2) includes a fuel supply system (24) having a first fuel supply device (50) for supplying a fuel (HG) to the combustor (21), a second fuel supply device (51) for supplying a gas (LG) having a small heating value to the combustor (21), and a switching device (56) operable to switch the first fuel supply device (50) and the second fuel supply device (51) based on a temperature of the air compressed by the air compressor (20) or the exhaust gas discharged from the turbine (22).