Refrigerant is the refrigerant synthetic halocarbons group because it does not exist in nature directly. These refrigerants have one or more halogen atoms of the group; chlorine, fluorine and bromine.
Although in terms of technique this refrigerant has good properties, such as high stability, non-flammable and non-toxic, it includes ODS refrigerants. If the CFC gas which has two chlorine atoms released into the air and exposed to ultraviolet light to decompose. Atomic chlorine (Cl) are released and react with ozone (O3) takes the oxygen atom from ozone to form chlorine monoxide and oxygen.
Chlorine monoxide will react with other oxygen atom to form molecular oxygen to form oxygen and chlorine atoms. Chlorine atom only act as a catalyst in the reaction. Therefore, the chlorine atom is able to continuously change the ozone into oxygen through thousands of similar reactions.
With the depletion of the ozone layer, the protective layer is located at an altitude of about 15-50 km above the earth's surface, ultraviolet radiation from the sun will be directly down to the earth that can cause health problems and impaired balance of the ecosystem.
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