Patent ID: 8069646

Claim:
A gas turbine system comprising a compressor for compressing air, a compressor inlet guide vane for adjusting a flow rate of the air taken into the compressor, a humidification tower for humidifying the air compressed by the compressor, a combustor for combusting a fuel with the air humidified by the humidification tower to generate a combustion gas, a turbine driven by the combustion gas, a recuperator for performing a heat exchange between an exhaust gas discharged from the turbine and the humidified air to be supplied from the humidification tower into the combustor, and a controller for controlling an opening degree of the compressor inlet guide vane in accordance with a load of the system to keep a temperature of the exhaust gas high during a partial load operation of the system, wherein the system further comprises an intake bypass system for introducing a part of the air compressed by the compressor directly to the combustor while preventing said part of the air compressed by the compressor from passing through the humidification tower and the recuperator, and wherein the system further comprises a discharge bypass system for introducing a part of the humidified air after the heat exchange between the exhaust gas and the humidified air is performed by the recuperator into an exhaust duct while preventing said part of the humidified air from passing through the turbine.