ABSORPTIVE WATER COOLER-HEATER, AND ITS CONTROL METHOD

PROBLEM TO BE SOLVED: To achieve energy saving and perform the stable continuous operation of an absorptive water cooler-heater. SOLUTION: This is an absorptive water cooler-heater where a boiler 10 and an absorption freezer 48 are united, and this detects the temperature change on load side by means of a cold/hot water temperature sensor 102, and performs the efficient operation of the boiler 10 by increasing/decreasing the fuel to be supplied to the boiler 10 by the control signal from an operation panel 114 for operation control and safety control based on the temperature change and increasing/decreasing the quantity of fuel of a burner 18, and this has a pipe for circulation flow of liquid by which the continuous operation becomes possible by driving each liquid absorptive pumps 82, 85, and 93 of the absorption freezer 48 concurrently thereby stably supplying absorbent different in the rate of inclusion of water, 8 pipe 95 which branches 8 part of the absorbent flowing in an absorbent pump 85 for supplying liquid to a regenerator, that is, a hightemperature regenerator 84 placed above a tow-temperature regenerator 84 and bypassing it to a return pipe, and a pipe 96 which concurrently branches a part of the liquid flowing in a water/absorbent supply pump 93 from the high- temperature regenerator 87 and bypasses it to a return pipe, and adjusts the power load falling on the pumps 85 and 93 by adjusting the quantity of supplied water/ absorbent.