当前在食品冷库的双级压缩制冷中,大都采用一次节流完全中间冷却、节流阀前液体再冷循环系统。中间温度取决于高低压机的容积比及蒸发温度和冷凝温度。如其中一个因素改变时,中间温度也随之改变。当工作条件和容积比确定后,中间压力和相应的温度也是确定的。前些时笔者应邀去邻县冷库帮助工作,却遇到和分析处理过一次中间冷却温度和压力极 Currently in the food refrigeration two-stage compression refrigeration, most of the use of a full throttle after the intermediate cooling, throttle valve before the liquid recirculation system. The intermediate temperature depends on the volume ratio of the high and low pressure machine and evaporation temperature and condensation temperature. As one of the factors changes, the intermediate temperature also changes. When the working conditions and volume ratio is determined, the intermediate pressure and the corresponding temperature is also determined. Some time ago I was invited to work in neighboring counties to help work, but encountered and analyzed an intermediate cooling temperature and pressure