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在主要由热能来驱动的吸收式制冷系统中,目前普遍使用的有氨—水、水—溴化锂双组分吸收式制冷及氨—水—氢三组分连续扩散吸收制冷。前两者已广泛用于大型的制冷和空调系统;扩散吸收制冷循环在三十、四十年代,则以煤气冰箱型式得到过广泛的应用。这种制冷方式的特点是在系统中采用氨为致冷剂,水为吸收剂,并加入一定压力的惰性气体—氢。在装置中,氨、水蒸汽和氢的总压力在各个部分都相等。而在蒸发器
In the absorption refrigeration system that is mainly driven by thermal energy, ammonia-water, water-lithium bromide two-component absorption refrigeration and ammonia-water-hydrogen three-component continuous diffusion absorption refrigeration are commonly used at present. The first two have been widely used in large refrigeration and air conditioning systems; diffusion absorption refrigeration cycle in the thirties and forties, then the gas refrigerator type has been widely used. This cooling method is characterized by the use of ammonia in the system as a refrigerant, water as an absorbent, and add a certain pressure of inert gas - hydrogen. In the installation, the total pressure of ammonia, water vapor and hydrogen is equal in all parts. And in the evaporator