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制冷装置的节能一直是人们所关心和致力于研究的课题之一。但长期以来,人们的注意力主要放在制冷装置的能量调节,制冷装置的结构,换热器的效率以及制冷压缩机的改进上,而对于传输能量的工质——制冷剂,则没有给予应有的注意。目前,在我国制冷装置中(主要指小型制冷裝置)所选用的制冷剂主要还是100多年来所普遍使用的单一制冷剂氟里昂12、氟甲昂22、氟里昂11、氟里昂13等,而国外已经普遍使用的共沸制冷剂如R 500、R 502等在我国还没有成为商品。诚然,这些单一制冷剂(在应用上,共沸混合制冷剂也可看成是
Energy-saving of refrigeration equipment has always been one of the topics that people are concerned with and devoted to researching. However, attention has long been focused on the energy conditioning of refrigeration units, the structure of refrigeration units, the efficiency of heat exchangers, and the improvement of refrigeration compressors, but not on the refrigerant-energy transfer medium Due attention. At present, the refrigerants used in refrigeration units of our country (mainly referred to as small-scale refrigeration units) are mainly the single refrigerants Freon 12, Fluorocarbon 22, Freon 11, Freon 13 which are commonly used for over 100 years. Foreign countries have been widely used azeotropic refrigerants such as R 500, R 502, etc. in our country has not yet become a commodity. It is true that these single refrigerants (in the application, azeotropic refrigerant mixture can also be seen as