Usually according to the standard evaporation temperature of refrigerant, it is divided into high, medium and low temperature. Standard evaporation temperature refers to the evaporation temperature at standard atmospheric pressure, that is, the boiling point.
Low pressure high temperature refrigerant:
Evaporation temperature is higher than 0℃, condensation pressure is lower than 29.41995×104Pa. This kind of refrigerant is suitable for centrifugal refrigeration compressor of air conditioning system.
Medium pressure medium temperature refrigerant:
Medium pressure medium temperature refrigerant: evaporation temperature -50 ~ 0℃, condensation pressure (196.113 ~ 29.41995) ×104Pa. This refrigerant is commonly used in common single - stage compression and double - stage compression piston refrigeration systems.
High pressure low temperature refrigerant:
High pressure low temperature refrigerant: the evaporation temperature is lower than -50 ° C, and the condensation pressure is higher than 196.133 x 104Pa. This kind of refrigerant is suitable for the low temperature part of the repetitive refrigeration device or the low temperature device below -70℃.
