| 摘要 |
PROBLEM TO BE SOLVED: To improve the performance of refrigerating cycle by reducing a heat exchanging temperature difference between a high-temperature evaporator and a low-temperature absorber of a two-stage absorption refrigerator. SOLUTION: This two-stage absorption refrigerator comprises a high- temperatrue absorber 21, a high-temperature evaporator 11, a low-temperature absorber 22, and a low-temperature evaporator 12. Heat transfer tube s15, 29 are respectively disposed at the high-temperature evaporator and the low- temperature absorber, and a circulating passage for a heat exchanging fluid is formed together with a pump 20. This passage is circulated alternately through the high-temperature evaporator and the low-temperature absorber and are passed at least twice or more number of times.
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