Patent ID: 7278255

Claim:
A gas turbine installation comprising: air compressor means, a combustor for burning fuel together with air discharged from said compressor, a turbine driven by combustion gas generated by said combustor, a water adding apparatus provided in a path leading said compressed air discharged from said compressor to said combustor for adding water to said compressed air flowing in said path, and a heat exchanger provided in said path on the downstream side of said water adding apparatus for heating the compressed air passed through said water adding apparatus by exhaust gas discharged from the gas turbine, characterized in that the air compressor means are formed by a single non-intercooled air compressor, and a spraying apparatus is provided on the upstream side of said compressor for spraying water droplets to air to be supplied to said compressor, said spraying apparatus having means for controlling the spray of water droplets to air to be supplied to said compressor whereby a part of the sprayed water droplets is evaporated before being led into said compressor and the remaining part of the non-evaporated water droplets is fed together with air into said compressor and evaporated during the flow through the compressor.