制冷装置的供液系统,型式很多。最常用的有直接膨胀供液、重力供液和液泵强制循环供液等型式。六十年代中期又出现了气泵供浓系统。这些制冷系统各有所长,也均有所短。目前,国内大、中型冷库中应用最广的仍然是用机械泵的液泵循环供液系统。 Refrigeration equipment for the liquid system, many types. The most commonly used direct expansion of liquid, gravity and liquid pump forcibly circulating liquid supply and other types. In the mid-1960s there was a pump for the concentration system. These refrigeration systems have their own strengths and shortnesses. At present, the domestic large and medium-sized cold storage is still the most widely used mechanical pump liquid circulation system.