1. Vapor-liquid heat exchangers are often used to superheat the suction vapor of compressor and to subcool the inlet liquid of throttle valves in refrigerating system.
制冷循环中往往采用回热器，使压缩机吸气过热和膨胀阀入口液体过冷。
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2. Vapor-liquid heat exchangers are often used to superheat the suction vapor of compressor and to subcool the inlet liquid of throttle valves in refrigerating system.
