Why R22 Refrigerant Gas Is Still an Inevitable Option in Cooling System?

Why R22 Refrigerant Gas Is Still an Inevitable Option in Cooling System?

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R22 is a chlorodifluoromethane refrigerant that is extensively used in air conditioning systems and other refrigeration applications.

If your air conditioning unit is older than ten years, it’s likely that it uses R22, often known as “Freon.” R22 is an air conditioning refrigerant (a chemical used to cool air conditioners) that was previously widely utilized in both households and businesses. 

After years of use in air conditioning systems of all sizes, it was determined that R22 is a harmful chemical that contributes considerably to ozone layer thinning. However, R22 refrigerant gas still holds immense importance in the refrigeration industry.

The Importance of R22 Refrigerant Gas in The UAE and Middle East

High vaporization latent heat

In R22 refrigerant, a high latent heat of vaporization is desirable. It produces a high refrigerating effect with a modest refrigerant circulation rate. In each refrigeration cycle, more heat can be received and expelled.

Low compression ratio and a high suction gas density

Because of the high suction gas density at the compressor suction, a smaller compressor and a lower-powered compressor motor are required. The R22 expansion after passing through the evaporator is not particularly high, i.e., fluid to gas expansion is modest.

The larger mass flow rate of the refrigerant resulted in a low rate of circulation within the system, resulting in a low compression ratio for the compressor.

It’s non-flammable, non-corrosive, and non-toxic

Refrigeration refrigerant must not be toxic or harmful to air conditioning, human health, or food. When in touch with metal parts such as pipelines and compressors, electrochemical corrosion must be avoided.

Non-metallic parts, such as nitrile rubber tubes and O-rings, must be compatible (used for sealing purposes).

The refrigerant must not produce an explosion or catch fire within the system when it is compressed under high pressure and temperature inside the compressor, and it must maintain its non-flammable qualities.

Moisture in the system can allow extremely corrosive chemicals (often acids) to develop, which can react with compressor lubricating oil and other elements in the system, including metals.

Important Uses and Application of R22

  • Due to its low ozone depletion potential of 0.055, which is among the lowest among chlorine-containing haloalkanes, R-22 is frequently employed as a substitute to the severely ozone-depleting CFC-11 and CFC-12. Even this lesser ozone depletion potential.
  • Furthermore, R-22 is a potent greenhouse gas with a global warming potential of 1810 degrees Fahrenheit (which indicates 1810 times as powerful as carbon dioxide).
  • Because of their reduced Ozone Depletion Potential, hydrofluorocarbons (HFCs) are frequently used in place of R-22, although they also have a significant global warming potential.

Summing It Up

R-22 is an important intermediate in commercial organofluorine chemistry, serving as a precursor to tetrafluoroethylene, for example. R-22 cylinders are bright green in color. 

Due to the compound’s ozone depletion potential (ODP) and high global warming potential (GWP), R-22 applications are being phased out in developed countries. However, the global use of R-22 continues to grow due to increasing demand in the UAE and Middle East countries. 



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