为工业制冷盘管除霜的常用方法之一是使用来自压缩机排气口或高压接收器的高压气体。除霜过程现在是制冷设备运行中众多节能目标之一。R-22系统的实验室试验和氨系统的现场试验已经确定了一些可能降低与热气除霜相关的能源需求的功能，即（1）仍然达到满意除霜效果的最小热气压力，（2）从盘管中排出冷凝液体制冷剂的方法，以及（3）结束除霜点的关键性质。 试验表明，盘管两端的压差比通常采用的压差能达到满意的除霜效果，排水控制应尽可能快地从盘管中排出液体，但随后防止蒸汽流回吸入管线。引文:ASHRAE Transactions，1983年，第89卷，pt。华盛顿特区2A。

One of the popular methods of defrosting industrial refrigeration coils is through the use of high-pressure gas from the compressor discharge or the high-pressure receiver. The defrost process is now one of the numerous targets for energy conservation in the operation of refrigeration plants. Laboratory tests of an R-22 system and field tests of an ammonia system have identified sorry features that could reduce the energy requirements associated with hot-gas defrost, namely (1) the minimum hot-gas pressures that still achieve satisfactory defrost, (2) the method of draining condensed liquid refrigerant from the coil, and (3) the crucial nature of the point at which to terminate defrost. The tests show that pressure differences across the coil lover than typically employed will achieve a satisfactory defrost, and that the control of the drainage should eliminate liquid from the coil as rapidly as possible but then prevent vapor from passing back to the suction line.