LEMVIG GAS DISTRIBUTION A/S - European supplier of gas

R404A refrigerant gas is a kind of environment protective refrigerant, As the long-term substitute for R-twenty-two and R502,It is used mainly in refrigeranting systems of low & moderate temperature.

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.

It is mainly used to replace R22 and R502 refrigerants in low-temperature refrigeration equipment; because R290 refrigerant is flammable, it is usually only used in low-temperature refrigeration equipment with a small amount of liquid, or as a component of low-temperature mixed refrigerant; R290 is compatible with traditional refrigeration oil. High-purity R290 is used as a temperature-sensing working fluid; premium and first-grade R290 can be used as a refrigerant to replace R22, R502, compatible with the original system and lubricating oil, and used for central air conditioning, heat pump air conditioning, household air conditioning and other small refrigeration equipment . R290 is a hydrocarbon refrigerant; it has no damage to the ozone layer and has a very small greenhouse effect.