Ammonia refrigerant code

The code of ammonia refrigerant is R7 17, and the pressure of ammonia refrigerant in condenser and evaporator is moderate (the condensation pressure is generally 0.98 1MPa, and the evaporation pressure is generally 0.098-0.49 MPa); ); The refrigerating capacity per unit volume is greater than CFC- 12 and HCFC-22；; The latent heat of vaporization is large, and the refrigeration heat release coefficient is high. At the same temperature and refrigeration capacity, the volume of ammonia compressor is the smallest.

Expansion: The synthetic process of ammonia refrigerant is mature, easy to prepare, low in price, without destroying the ozone layer and greenhouse effect. The refrigeration system with ammonia as refrigerant should have two characteristics: safety, perfect sealing system, leak detection system and perfect alarm system; Corrosion resistance, in ammonia refrigeration equipment, its pipes, instruments, valves, etc. It cannot be made of copper and copper alloy materials.