Latent heat - Import export

The application characteristics of R134a are analyzed as follows: 1.R134a has a global warming potential (GWP) of 0.25 and R22 of 0.36, both of which are greenhouse gases. 2.the ozone depletion potential (ODP) of R134a is 0 and R22 is 0.06. This is the reason why R134a has become an environmentally friendly refrigerant. 3.the specific volume of R134a is 1.47 times that of R22, and the latent heat of evaporation is small, so the refrigeration capacity of R134a unit is only 60% of that of R22 unit. Calculated according to the price of unit cooling capacity, the price of the R22 unit is about 60% of that of the R134a unit. 4. the thermal conductivity of R134a is 10% lower than that of R22, so the heat exchange area of the heat exchanger of the R134a unit needs to be larger. 5.R134a has strong water absorption, which is 20 times that of R22, so the dryer in the unit system has higher requirements to avoid ice blocking.

R134a is a new type of refrigerant, its standard boiling point is -26.5°C; R134a is safe, colorless, odorless, non-flammable, non-explosive, basically non-toxic, and chemically stable; R134a has a large latent heat of vaporization and is more stable Large autoclave capacity and good refrigeration capacity; large saturated gas volume, small mass flow of refrigerant in the same displacement compressor; high thermal conductivity, good heat transfer performance; low viscosity, good fluidity; no effect on the ozone layer The damage and greenhouse effect are smaller than R22. R134a has a relatively small corrosive effect on metals, good stability, and is insoluble in water, but R134a is insoluble in mineral oil, so POE or PAG lubricants are required.