Absorption Refrigeration Systems. Single-effect ARS

As noted earlier, in ARS, extractor hood, generator, pump and recuperative heat exchanger replace the compressor. As a mechanical refrigeration unit, as shown in Fig. 3.49, the cycle begins when the high-pressure liquid refrigerant from the condenser, passes through a metering unit (1) in the lower pressure and evaporator (2) and collects in the evaporator pan or Carter. As before, flashing that occurs at evaporator inlet cools the remaining liquid refrigerant. Similarly, the transfer of heat from a relatively warm water system, now-cold refrigerant causes the latter to evaporate (2), and the resulting refrigerant vapor migrate to lower the pressure-relief (3). No, he absorbed the absorbent lithium bromide solution. This process not only creates a low pressure area that attracts a steady stream of refrigerant vapour at the outlet of the evaporator absorber, but also causes the vapor condenses (3), as it releases the heat of vaporization took in the evaporator. This heatРІР‚together with the heat of dilution produced as a refrigerant condensate is mixed with absorbentРІР‚is rejected to the cooling water and released in the tower. Of course, the development of refrigerant dilutes the lithium bromide solution and reduces the attachment to the refrigerant vapor. To maintain refrigeration cycle, the decision must be reconcentrated. This is achieved by constantly pumping (4) a dilute solution of the absorber of generator (5)when adding heat to boiling of refrigerant from the absorbent. After the refrigerant is removed, reconcentrated lithium bromide solution returns to the absorber, ready to resume the process of absorption. Meanwhile, the refrigerant vapor released generator migrate to cooler condenser (6). There, the refrigerant is returned in the liquid state, as the cooling water raises the heat of vaporization is the pair. The liquid refrigerant, back to the metering unit (1) terminates the loop.

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