Clean Air act (CAA)
Scientists all over the world came to the conclusion that the R-12 CFCs and other ozone-depleting. As a result, more than 150 countries signed a Treaty called the Montreal Protocol on the protection of the ozone layer of the earth, as mentioned earlier. For example, the Protocol was implemented in the United States CAA law as amended by the U.S. Congress in 1990 and regulations issued on the basis of the act ended the production of R-12 Air conditioning and refrigeration uses on 31 December 1995. Yeah directs US
EPA ozone layer protection through several regulatory and voluntary programmes and covers the production of ODS, processing and handling of ODS substitutes assessment, and efforts to educate the public. A detailed list of class I and class II substances with their ODPs, GWP, and CAS numbers given in the Table. Class I any chemical substance with an ODP of 0.2 or more. Class II substances include all HCFCs. These connections are numbered according to ASHRAE Standard 34 scheme. In fact, CFCs are numbered according to the standard scheme.
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Refrigerants