JPS6428453A - Absorption refrigerating machine - Google Patents

Abstract

PURPOSE: To simplify an overall refrigerator by providing a unit for sprinkling water on a heat transfer surface of an absorber to cool the absorber by a vaporization heat of water, thereby eliminating a necessity of using fluorocarbon containing chlorine as an operating medium. CONSTITUTION: A lithium bromide aqueous solution, for example, in a generator 14 is, for example, heated by a combustion energy of a gas, kerosene or the like via a piping L2, a water of a refrigerant is evaporated to generate a steam. A concentrated lithium bromide aqueous solution heats lithium bromide aqueous solution (dilute solution) fed from an absorber 12 by a heat exchanger 20. At this time, the concentrated solution itself is cooled, fed to the absorber 12 to absorb the steam and to be heated. Meanwhile, the steam generated from a generator 14 is fed to a condenser 16, the water scattered from a sprinkling tube 22 is evaporated and cooled. The refrigerant vapor in the condenser 16 is pressure reduced by a pressure reducing unit 36, sprayed into the evaporator 18, heated by cold fluid flowing through a cold fluid passage 38, and evaporated. The cold fluid is derived of an evaporation heat to be cooled for use in cooling.