ABSORPTION REFRIGERATING MACHINE

PROBLEM TO BE SOLVED: To upgrade performance by improving a cooling water supply system in an absorption refrigerating machine. SOLUTION: An absorption refrigerating machine includes a circulation cycle provided by operatively connecting a condenser C, an evaporator E, an absorber A, and regenerators Gn to G1 each of which has a different operating temperature by means of a solution piping system and a refrigerant piping system. The absorption refrigerating machine concentrates absorption solution sequentially from the regenerator Gn on the highest temperature side to the regenerator G1 on the lowest temperature side, and uses the refrigerant steam that is generated in the regenerator Gn on the highest temperature side as a heat source of the regenerator Gn-1 on the lower temperature side. In this absorption refrigerating machine, cooling water Wa is made to flow into the absorber A and the condenser C in parallel and the cooling water that cooled the absorber A is combined with the cooling water that is supplied to the condenser C. With this configuration, in the condenser C, the high condensation performance is achieved by assuring the flow rate and the low temperature of the cooling water, and accordingly the working pressure of the regenerators is reduced. By the reduction of the working pressure, the inner pressure of the absorption refrigerating machine is reduced and the reliability on the operation is improved.