To provide an absorption refrigerating plant which has enhanced a result coefficient when viewed as a device on the whole by enriching the refrigerant concentration of a refrigerant vapor to be given to a condensation functional area.
A first heat operation fluid (cooling water) 35a is divided into a pipeline 20A and a pipeline 30B, thereby cooling an absorption function area (an absorber) 1 and a condensation function area (condenser) 11. The first operation fluid 35a after the condensation functional area 11 is cooled, is branched into a pipeline 20C3 and a pipeline 20C4 so that the fluid may be provided to a heat exchanger tube of a reflux area 205F adapted to cool the refrigerant vapor 7a to be given to the condensation function area 11 from a generating functional area (generator) 5. The flow rate of the first operation fluid 35a, which is given to the reflux area 205F is controlled with a temperature control valve 241 so that the temperature of the refrigerant vapor passing through the pipeline 10 may be turned to a specified value, which makes it possible to enrich the concentration of the refrigerant. Preferably, the reflux area 205F should be formed with a heat exchanger which is different from the generating function area 5. This construction makes it possible to enhance the performance coefficient viewed as the device on the whole without hindering the absorption functional area 1 by the first heat operation fluid 31a.
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NOMURA KAZUO
MURAYAMA SHIGERU
KATOU TOMOHIKO
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