What is the substitute for R290 refrigerant?

R290 is a hydrocarbon refrigerant, also known as propane, chemical formula: CH3CH2CH3, boiling point: -42.12 degrees, freezing point: -187.1 degrees, critical temperature: 96.8 degrees. The performance is close to R502 refrigerant, and close to R22 refrigerant. R502 refrigerant: boiling point: -45.6 degrees, freezing point: no standard, critical temperature: 90.2 degrees R22 refrigerant: boiling point: -40.8 degrees, freezing point: -160 degrees, critical temperature: 96 degrees.

R290 is classified as a flammable refrigerant. In the next few years, it will replace the excessive product of R22. You can change the refrigerating oil to 22. Can be replaced by R22. Near the primary physical properties of R290 and R22, there is no need to replace the compressor and refrigerating oil of the system.

However, if the latent heat of vaporization of R22 is less than that of R290, the amount of refrigerant perfusion needs to be added. Since R22 and R290 refrigerants are very similar in use, the two products can be substituted for each other.

R290: a potential refrigerant substitute

With the use and development of international refrigeration and air conditioning technology, demand for refrigerants is also emerging The trend is increasing year by year, reaching hundreds of thousands of tons of consumption each year. Therefore, from the perspective of long-term impact, reusing the natural working fluids that exist in nature is an aspirational choice to complete the sustainable development of the environment and resources.

The refrigerant R290, compared with the synthetic refrigerant such as Freon, the natural refrigerant R290 does not contain chlorine atoms in the molecule, so the ODP value If it is zero, it has no damaging effect on the ozone layer. In addition, compared with the same HFC substance that has no effect on the ozone layer, the GWP value of R290 is close to 0, which has no effect on the greenhouse effect. R290 is now used in domestic water heaters and air conditioning systems in Germany. At present, some air conditioner manufacturers have produced R290 refrigerant air conditioners.

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