| 摘要 |
PROBLEM TO BE SOLVED: To improve the efficiency of an absorption type water cooling and heating apparatus, variably setting a preset temperature of load fluid. SOLUTION: An absorption refrigerating cycle is formed by connecting the followings: regenerators 12, 16 for heating a diluted solution to generate refrigerant steam and a concentrated solution; a condenser 18 for condensing the refrigerant steam generated in the regenerators; an evaporator 20 for performing heat exchange between the refrigerant liquid condensed by the condenser and load fluid to cool the load fluid; an absorber 22 for absorbing the refrigerant evaporated in the evaporators in the concentrated solution generated in the regenerators; and a solution circulating pump 24 for sending the diluted solution generated in the absorber to the regenerators. A refrigerant passage 36 connecting the condenser and the evaporator to each other is provided with a liquid refrigerant proportional valve 38 for adjusting a refrigerant flow rate. A control means 40 controls the valve opening of the liquid refrigerant proportional valve so that the detected temperature of the evaporator reaches a target temperature of the evaporator, and variably sets the target temperature of the evaporator according to the preset temperature of the load fluid. COPYRIGHT: (C)2009,JPO&INPIT
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