| 摘要 |
In a compression refrigeration cycle employing a mixture of refrigerants and a single compressor wherein low temperatures are reached by one or more vapor-liquid separations in which the expanded and cooled liquid from each separation stage is evaporated and used to condense the vapors from that stage, high starting discharge pressures are avoided and rapid cool down to low temperature is achieved by incorporating a by-pass system for the throttling device feeding the evaporator which is responsive to predetermined operating characteristics of the cycle.
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