![]() How vapor absorption refrigeration system (VARS) works? Absorber: Absorber receives low pressure ammonia vapor from evaporator and weak ammonia solution from the generator and mixes them well to form a strong solution of aqua-ammonia. Here, the refrigerant absorbs heat from material which is to be cooled and gets evaporated. ![]() Evaporator: The evaporator is otherwise called cold chamber. While passing through this valve, liquid ammonia gets expanded into low pressure and low temperature ammonia.Ĥ. Expansion valve: This valve is otherwise called throttling valve, since the expansion which takes place here is throttling. This condensation is done by means of circulating water.ģ. ![]() Condenser: The condenser converts high pressure ammonia vapor received form generator into high pressure ammonia liquid. Because of its heating, the aqua –ammonia solution gets separated into ammonia vapor at high pressure and hot weak ammonia solution which contains mostly water.Ģ. Generator: The generator receives the strong solution of aqua- ammonia from the absorber and heats it. The vapor absorption refrigeration system has following componentsġ. Construction of vapor absorption refrigeration system:
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