Method and Apparatus for Generating Chilled Water for Air-Conditioning

Abstract

Any one of heat medium, hot water, steam, and high-temperature gas generated by solar heat collected in a solar thermal collector ( 68 ), and geotherm, or waste heat from co•generation system or other power plant is used as the driving heat source of a multiple-effect absorption chiller ( 58 ) of triple effects or more. The multiple-effect absorption chiller includes at least an absorber, an evaporator, a condenser, a solution heat exchanger, and n stages (n≧3) of regenerators, and has multiple effects. By constructing in this manner, the invention presents a system of generating chilled water for air-conditioning reduced in the CO 2 emission by utilizing solar heat, earth's heat, and waste heat from co•generation system or power plant.

1 . A method of generating chilled water for air-conditioning relating to a multiple-effect absorption chiller comprising at least an absorber, an evaporator, a condenser, a solution heat exchanger, and n stages (n≧3) of regenerators, wherein any one of heat medium, hot water, steam, and high-temperature gas generated by solar heat collected in a solar thermal collector, geotherm or waste heat from co•generation system or other power plant is used as the driving heat source of the multiple-effect absorption chiller. 
     
     
         2 . The method of generating chilled water for air-conditioning according to  claim 1 , wherein any one of heat medium, hot water, steam, and high-temperature gas generated by solar heat collected in a solar thermal collector, geotherm or waste heat from co•generation system or other power plant is used directly, and is used as the driving heat source of the multiple-effect absorption chiller. 
     
     
         3 . The method of generating chilled water for air-conditioning according to  claim 1 , wherein in order to compensate for the solar heat collected in a solar thermal collector, geotherm or waste heat from co•generation system or other power plant, the heat source of a back-up device is also used as the driving heat source of the multiple-effect absorption chiller. 
     
     
         4 . The method of generating chilled water for air-conditioning according to  claim 1 , wherein the temperature of any one of heat medium, hot water, steam, and high-temperature gas generated by solar heat collected in a solar thermal collector, geotherm or waste heat from co•generation system or other power plant is 200° C. or more. 
     
     
         5 . The method of generating chilled water for air-conditioning according to  claim 1 , wherein the solar thermal collector is of condenser type. 
     
     
         6 . The method of generating chilled water for air-conditioning according to  claim 1 , wherein in order to control integrally depending on the chilled water users, systems excluding the solar thermal collector, geothermal generating equipment, the waste heat generating devices such as co•generation system, or power plant are packaged as one system. 
     
     
         7 . The method of generating chilled water for air-conditioning according to  claim 1 , wherein a system is composed by containing a solar thermal collector, and not containing geothermal generating equipment, waste heat generating devices such as co•generation system, or power plant, and one system may be packaged. 
     
     
         8 . The method of generating chilled water for air-conditioning according to  claim 1 , wherein it is designed to monitor by remote observation. 
     
     
         9 . The method of generating chilled water for air-conditioning according to  claim 8 , wherein it is designed to control by remote control. 
     
     
         10 . The method of generating chilled water for air-conditioning according to  claim 1 , wherein depending on the chilled water load, it is designed to control at least one of cooling tower control, cooling water circulation control, and chilled water circulation control. 
     
     
         11 . An apparatus of generating chilled water for air-conditioning comprising at least a multiple-effect absorption chiller including at least an absorber, an evaporator, a condenser, a solution heat exchanger, and n stages (n≧3) of regenerators, a cooling tower for cooling the cooling water from this multiple-effect absorption chiller, a cooling water pump for supplying the cooling water from the cooling tower of this multiple-effect absorption chiller, and a chilled water pump for circulating the chilled water in the multiple-effect absorption chiller, wherein a high-temperature regenerator, and a solar thermal collector, geothermal generating equipment, waste heat generating device such as co•generation system, or power plant are connected by way of driving heat source supply tubes for supplying any one of heat medium, hot water, steam, and high-temperature gas generated by solar heat, geotherm, or waste heat from co•generation system or other power plant to the high-temperature regenerator as the driving heat source. 
     
     
         12 . The apparatus of generating chilled water for air-conditioning according to  claim 11 , wherein the driving heat supply tubes are connected and provided with a buffer tank for storing any one of the heat medium, hot water, steam, or high-temperature gas heated by a heat source in a back-up device. 
     
     
         13 . The apparatus of generating chilled water for air-conditioning according to  claim 11 , wherein the solar thermal collector is of condenser type. 
     
     
         14 . The apparatus of generating chilled water for air-conditioning according to  claim 11 , further comprising control means for controlling the load by remote control depending on the chilled water load. 
     
     
         15 . The apparatus of generating chilled water for air-conditioning according to  claim 11 , further comprising any one of cooling tower control means for controlling the fan of the cooling tower, cooling water circulation control means for controlling the circulation amount of the cooling water, and chilled water circulation control means for controlling the circulation amount of the chilled water.