The working environment of the air conditioner and the refrigerator freezer is different

The working environment of the air conditioner and the refrigerator freezer is different, which causes inconsistency in the variety of refrigerant used, and also affects the structure of the compressor. Household refrigerators are of low back pressure type (evaporation temperature -35～-15℃). The cooler, milk cooler, etc. are of medium back pressure type (evaporation temperature -20～0℃). Household air conditioners, heat pumps, etc. are of high back pressure type (evaporation temperature -5~15℃). Corresponding piston compressors for refrigerators and freezers, while rotor compressors for household air conditioners, turbo compressors are used for central air conditioners. Of course, the structure of the compressor is mainly limited by the cooling capacity, the efficiency of the piston with a small displacement is high, and the turbine with a large displacement is more economical. Different working environments result in different heat and pressure resistance of components under this temperature and pressure, and the compatibility and corrosion of refrigerants and lubricants as well as the materials of each component are also different, requiring complicated and cumbersome The result of repeated tests is not to use whatever you want.

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The working environment of the air conditioner and the refrigerator freezer is different

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