碳氢冷媒即碳氢制冷剂，其特点是只有碳和氢且不含卤元素的化合物；因此碳氢类冷媒对臭氧层无破坏，对地球温室效应很低且无毒，完全符合国际节能环保减排的标准，是目前国际理想的冷媒。制冷剂分为单一制冷剂和混合制冷剂。其中以R433b为代表，相对于传统冷媒R22制冷效果稍差但比R22节能；混合制冷剂分为共沸混合制冷剂、近共沸混合制冷、非共沸混合制冷剂。而非共沸混合制冷以中炜r433b为代表，相对于传统冷媒R134a.R22制冷效果和节能效果都表现明显提升。不管是单一制冷剂和混合制冷剂其主要成份都是烷烃类。
Hydrocarbon refrigerants are hydrocarbon refrigerants, which are characterized by only carbon and hydrogen and no halogenated compounds; therefore, hydrocarbon refrigerants have no damage to the ozone layer, have low and non-toxic greenhouse effect on the earth, fully meet the international standards for energy conservation and environmental protection and emission reduction, and are currently the ideal refrigerants in the world. Refrigerant is divided into single refrigerant and mixed refrigerant. Among them, r433b, as the representative, has a slightly worse refrigeration effect than the traditional refrigerant R22, but is more energy-saving than R22; the mixed refrigerant is divided into azeotropic mixed refrigerant, near azeotropic mixed refrigerant and non azeotropic mixed refrigerant. Compared with the traditional refrigerant r134a.r22, the non azeotropic hybrid refrigeration, represented by Zhongwei r433b, has significantly improved the refrigeration effect and energy saving effect. Whether it is a single refrigerant or a mixed refrigerant, its main components are alkanes.
非共沸混合制冷剂的编号为R4XX，其在蒸发器中的蒸发过程及在冷凝器中的冷凝过程都是非理想混合过程。这两种非理想混合过程使得混合制冷剂在制冷系统中冷凝压力降低，蒸发压力升高，压缩机的排气温度降低。这就使得制冷机的压比降低，制冷系数提高，从河北立体车库 消防报警器塑料配件 电缆接地箱 电缆保护接地箱 塑料土工格栅 消弧线圈装置 而提高了制冷系统的能量效率。采用非共沸溶液作工质的制冷装t ，其冷凝压力较低，燕发温度较高，循环耗功t 较小，而冷凝器排放的热t 较多。因此，非共沸溶液特别适用于热泵系统。
The number of non azeotropic mixed refrigerant is r4xx. The evaporation process in evaporator and the condensation process in condenser are all non ideal mixed processes. These two non ideal mixing processes make the condensation pressure of the mixed refrigerant decrease, the evaporation pressure increase, and the exhaust temperature of the compressor decrease. This will reduce the pressure ratio of the refrigerator and improve the refrigeration coefficient, thus improving the energy efficiency of the refrigeration system. When the non azeotropic solution is used as refrigerant T, the condensation pressure is low, the temperature of Yanfa is high, the cycle power consumption is small, and the heat t discharged from the condenser is more. Therefore, non azeotropic solution is especially suitable for heat pump system.