Gas turbine installation

A gas turbine installation including an air compressor, a combustor for burning fuel together with the air discharged from said compressor, and a turbine driven by combustion gas generated by said combustor, said gas turbine installation comprising:

• a spraying apparatus provided on an upstream side of said compressor for spraying water droplets to air to be supplied to said compressor;
• a water adding apparatus provided in a first path leading said compressed air discharged from said compressor to said combustor for adding water to said compressed air flowing in said first path;
• a regenerator for heat-exchanging between the compressed air passed through said water adding apparatus and exhaust gas discharged from the gas turbine;
• a water recovery apparatus for recovering moisture from exhaust gas having passed through said regenerator;
• a second water supply path for supplying water recovered by said water recovery apparatus to said water adding apparatus;
• and
• a spray water supply path through which spray water is led from an external source outside the system to said spraying apparatus.

An efficiency increasing apparatus, provided in a gas turbine installation, for recovering thermal energy of gas turbine exhaust gas, thereby improving power generating efficiency, said gas turbine installation including a compressor for compressing air, a combustor for burning fuel together with the air discharged from said compressor, and a turbine driven by combustion gas generated by said combustor;

• said efficiency increasing apparatus comprising;
• a spraying apparatus provided on an upstream side of said compressor for spraying water droplets to air to be supplied to said compressor;
• a water adding apparatus provided in a first path leading said compressed air discharged from said compressor to said combustor for adding water to said compressed air flowing in said first path;
• a heat exchanger provided in said first path on a 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;
• a water recovery apparatus for recovering moisture from exhaust gas having passed through said heat exchanger;
• a second water supply path for supplying water recovered by said water recovery apparatus to said water adding apparatus;
• and
• a spray water supply path through which spray water is led from an external source outside the system to said spraying apparatus.

An efficiency increasing apparatus, provided in a gas turbine installation, for recovering thermal energy of gas turbine exhaust gas, thereby improving power generating efficiency, said gas turbine installation including a compressor for compressing air, a combustor for burning fuel together with the air discharged from said compressor, and a turbine driven by combustion gas generated by said combustor;

• said efficiency increasing apparatus comprising;
• a spraying apparatus provided on an upstream side of said compressor for spraying water droplets to air to be supplied to said compressor;
• a water adding apparatus provided in a first path leading said compressed air discharged from said compressor to said combustor for adding water to said compressed air flowing in said first path;
• a regenerator for heat-exchanging between the compressed air passed through said water adding apparatus and exhaust gas discharged from the gas turbine;
• a water recovery apparatus for recovering moisture from exhaust gas having passed through said regenerator;
• a second water supply path for supplying water recovered by said water recovery apparatus to said water adding apparatus;
• and
• a spray water supply path through which spray water is led from an external source outside the system to said spraying apparatus.