The paper summarizes research actuality of on-offoperation of small refrigeration system, and explains and analyzes the whole on-off process and its influence.
本文综述了小型制冷系统启停过程的研究现状，详细说明和分析了制冷系统整个启停过程及由此造成的影响。
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Installed in a mainline it prevents upstream pressure from dropping below a preset minimum. Solenoid override of the sustaining function allows for electrical on-offoperation.