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由于蒙特利尔协定的签署发生了限制和停止使用破坏大气臭氧层工质的问题。对制冷技术和制冷机制造业而言,首先反映在要重新审查和确定由化学工业提供的对臭氧层很少侵害作用的氟氯烃工质。现在的主要任务是大大减少最普遍使用的、对臭氧层有侵害作用的制冷剂 R12。局部地减少使用R12可以扩大利用最通用和最常用的对臭氧层很少侵害作用的制冷剂 R22。在建立工作于冷凝温度 t_k低于55℃和蒸发温度 t_o 高于-70℃的新的制冷机和压缩机时转向 R22(包括替代 R12)实际上是可能和合理的。在全世界包括苏联在内的制冷机制造业的实践中已看清了这个方向。例如在上述的温度
As a result of the Montreal Protocol’s signing, restrictions and the cessation of the use of atmospheric ozone-depleting substances have been imposed. For the refrigeration and refrigeration manufacturing industries, the first is reflected in the need to re-examine and identify HCFC-based refrigerants provided by the chemical industry that are less harmful to the ozone layer. The main task now is to significantly reduce the most commonly used refrigerant R12, which has an ozone-layer effect. The partial reduction in the use of R12 can expand the utilization of the most versatile and most commonly used refrigerant R22, which is less harmful to the ozone layer. It is actually possible and reasonable to set up R22 (including replacing R12) when setting up a new refrigerator and compressor operating at condensing temperature t_k below 55 ° C and evaporating temperature t_o above -70 ° C. This direction has been seen in the practice of the refrigerator manufacturing industry in the world, including the Soviet Union. For example at the above temperature