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R22 is one of the most popular refrigerants used in number of refrigeration and air conditioning
applications. Unfortunately, it has to be phased out since it causes depletion of ozone layer in the atmosphere. Let us see why the refrigerant is being phased out, time-line of phase out etc.
Why Phase out R22 or Freon 22?
Refrigerant R22 is used in
number of refrigeration and air conditioning systems. R22 is the halocarbon compound named monochlorodifluoromethane with chemical formula CHClF2 and it is the hydrochlorofluorocarbon (HCFC). R22 is
one of the most popular refrigerants used in cooling systems, but unfortunately, the halocarbons (chlorine and fluorine) present in these compounds have the potential to cause depletion of the ozone
layer in the atmosphere leading to greenhouse effect. The ozone layer destroying potential of R22, which is HCFC is much lesser than the other chlorofluorocarbons (CFCs), still in the long-term they
do have detrimental effects on the atmosphere.
The depletion of ozone layer from
the upper layers of atmosphere results in ultraviolet rays of the sun to reach the surface of the earth. This leads to high temperature on the earth and the ultraviolet ray themselves are very
harmful to the skin of human beings. To avoid the long-term dangers of the R22 and other CFCs, it has been decided to phase out the use and production of R22 completely along with other CFC