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

Abstract

In an intake-air refrigeration system of intake-air cooling type gas turbine power equipment, heat discharged to the atmosphere heretofore is recovered for further utilization. A refrigerant vapor discharged from an evaporator ( 05 ) of the refrigeration system is compressed by a refrigerant compressor ( 02 ) to be transformed to pressurized refrigerant vapor. Heat carried by the pressurized refrigerant vapor is supplied to a heat utilization system ( 80 ) to be recovered therein.

What is claimed is:  
     
         1 . 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 air compressor for compressing the air cooled in said intake-air cooling chamber 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 means of said refrigerant compressor to be transformed to a pressurized refrigerant vapor, and    wherein heat carried by said pressurized refrigerant vapor is supplied to a heat utilization system to be recovered for utilization.    
     
     
         2 . Intake-air cooling type gas turbine power equipment according to    claim 1   , 
 wherein said pressurized refrigerant vapor itself that leaves said refrigerant compressor is circulated through said heat utilization system so that the heat carried by said pressurized refrigerant vapor can be supplied to said heat utilization system for recovery.    
     
     
         3 . Intake-air cooling type gas turbine power equipment according to    claim 1   , in which said refrigeration system further includes a condenser, 
 wherein said pressurized refrigerant vapor leaving said refrigerant compressor is fed to said condenser in which said pressurized refrigerant vapor undergoes heat exchange with a heat transfer medium which circulates through said condenser and said heat utilization system, and    wherein heat carried by said compressed refrigerant vapor is supplied to said heat utilization system through the medium of said heat transfer medium to be recovered for utilization in said heat utilization system.    
     
     
         4 . Intake-air cooling type gas turbine power equipment according to    claims 1    to    3   , 
 wherein a heater for heating and drying the air cooled by said intake-air cooling chamber is disposed within said intake-air cooling chamber at a cooled-air outlet side thereof, and  
 wherein heat carried by said pressurized refrigerant vapor leaving said refrigerant compressor is utilized as a source of heat for said heater.  
 
     
     
         5 . A combined power plant, comprising: 
 intake-air cooling type gas turbine power equipment;    a heat-recovery type steam generation boiler;    steam turbine power generation equipment; and    a condenser,    said 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 air compressor for compressing the air cooled in said intake-air cooling chamber 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,    said heat-recovery type steam generation boiler serving for recovering a quantity of heat carried by the combustion exhaust gas discharged from said gas turbine of said gas turbine power equipment;    said steam turbine power generation equipment comprising:    a steam turbine driven rotationally under the action of a high-temperature/high-pressure steam produced by said heat-recovery type steam generation boiler; and    an electric generator operatively coupled to a rotor shaft of said steam turbine for generating electric energy, being driven through rotation of said rotor shaft; and    said condenser serving for condensing to water the steam discharged from said steam turbine of said steam turbine power generation equipment,    wherein the condensed water is used in said evaporator of said refrigeration system,    refrigerant vapor generated by said evaporator is pressurized by said refrigerant compressor, and    heat carried by said pressurized refrigerant vapor may be utilized for heating feed water of said heat-recovery type steam generation boiler utilized for recovering by said steam turbine as power.    
     
     
         6 . A combined power plant according to    claim 5   , 
 wherein said evaporator of said refrigeration system is disposed within said intake-air cooling chamber of said intake-air cooling type gas turbine power equipment for cooling the intake air, and    wherein said refrigerant vapor leaving said evaporator is compressed by said refrigerant compressor to thereby be transformed to a pressurized refrigerant vapor.    
     
     
         7 . A combined power plant, comprising: 
 intake-air cooling type gas turbine power equipment;    a heat-recovery type steam generation boiler;    steam turbine power generation equipment; and    a condenser,    said 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 air compressor for compressing the air cooled in said intake-air cooling chamber 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,    said heat-recovery type steam generation boiler serving for recovering a quantity of heat carried by the combustion exhaust gas discharged from said gas turbine of said gas turbine power equipment;    said steam turbine power generation equipment comprising:    a steam turbine driven rotationally under the action of a high-temperature/high-pressure steam produced by said heat-recovery type steam generation boiler; and    an electric generator operatively coupled to a rotor shaft of said steam turbine for generating electric energy, being driven through rotation of said rotor shaft; and    said condenser serving for condensing to water the steam discharged from said steam turbine of said steam turbine power generation equipment,    wherein refrigerant vapor discharged from said evaporator of said refrigeration system is pressurized to a pressurized refrigerant vapor by said refrigerant compressor, said pressurized refrigerant vapor being fed to said condenser of said refrigeration system where said pressurized refrigerant vapor undergoes heat exchange with said condensate water produced by said condenser to thereby heat said condensed water while said pressurized refrigerant vapor itself is condensed to a refrigerant liquid to be fed back to said evaporator, whereas said condensed water as heated is fed to said heat-recovery type steam generation boiler.    
     
     
         8 . A combined power plant according to    claim 7   , 
 wherein said evaporator of said refrigeration system is disposed within said intake-air cooling chamber of said intake-air cooling type gas turbine power equipment for cooling the intake air, and    said refrigerant vapor leaving said evaporator is compressed by said refrigerant compressor to thereby be transformed to the pressurized refrigerant vapor.