Intake-air cooling type gas turbine power equipment and combined power plant using same

Claim 1

An intake-air cooling type gas turbine power equipment, comprising: a refrigeration system including an evaporator and a refrigerant compressor; an intake-air cooling chamber for cooling air taken in from the atmosphere by said evaporator of said refrigeration system; an intake air heating system that heats the cooled air to thereby obtain dry, low temperature air; an air compressor for compressing the dry, low temperature air to thereby produce compressed air; a combustor for burning a fuel supplied from an external system with the compressed air produced by said air compressor to thereby produce a combustion gas; a gas turbine driven rotationally under the action of said combustion gas produced by said combustor; and an electric generator operatively coupled to a rotor shaft of said gas turbine for generating electric energy, being driven through rotation of said rotor shaft; wherein the refrigerant vapor leaving said evaporator of said refrigeration system is compressed by said refrigerant compressor to be transformed to a pressurized refrigerant vapor, and wherein heat carried by said pressurized refrigerant vapor is supplied to the intake air heating system.

Claim 6

A method of operating gas turbine power equipment comprising the steps of: providing gas turbine power equipment comprising an evaporator, a refrigerant compressor, an intake air cooling chamber, an intake air heating system, an air compressor, a combustor, a gas turbine and an electric generator; cooling air taken in from the atmosphere by the evaporator in the intake air cooling chamber; heating the cooled air to thereby obtain dry low temperature air; compressing the dry low temperature air in the air compressor to thereby produce compressed air; burning a fuel with the compressed air to thereby produce a combustion gas; rotationally driving the gas turbine under the action of the combustion gas; and generating electric energy by the electric generator being driven through rotation of a rotor shaft of the gas turbine coupled to the electric generator; wherein refrigerant vapor leaving said evaporator is compressed by said refrigerant compressor to be transformed to a pressurized refrigerant vapor, and wherein, in the intake heating system, heat carried by said pressurized refrigerant vapor the cooled air to obtain the dry, low temperature air.

Claim 7

A method of operating gas turbine power equipment comprising the steps of: providing gas turbine power equipment comprising an evaporator, a refrigerant compressor, an intake air cooling chamber, an intake air heating system, an air compressor, a combustor, a gas turbine and an electric generator; cooling air taken in from the atmosphere by the evaporator in the intake air cooling chamber; heating the cooled air to thereby obtain dry low temperature air; compressing the dry low temperature air in the air compressor to thereby produce compressed air; burning a fuel with the compressed air to thereby produce a combustion gas; rotationally driving the gas turbine under the action of the combustion gas; and generating electric energy by the electric generator being driven through rotation of a rotor shaft of the gas turbine coupled to the electric generator; wherein refrigerant vapor leaving said evaporator is compressed by said refrigerant compressor to be transformed to a pressurized refrigerant vapor, and wherein, in the intake heating system, heat carried by said pressurized refrigerant vapor the cooled air to obtain the dry, low temperature air.