Patent ID: 8006499

Claim:
A humid air turbine having a compressor for compressing air, a humidificator for generating humid air by adding moisture to compressed air supplied from the compressor, a combustor for generating combustion gas by allowing the humid air and fuel to mix and burn, a turbine driven by the combustion gas, a recuperator for effecting heat exchange between exhaust from the turbine and the humid air, an economizer for effecting heat exchange between exhaust from the recuperator and water, and a system for supplying the water heated by the economizer to the humidificator, the humid air turbine comprising: a control device for adjusting an amount of water to be supplied from the economizer to the humidificator so that a temperature of the combustion gas in the combustor remains substantially constant at a preset load increase rate, when the water supply to the humidificator begins.