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The use of carbon dioxide (CO2) as a refrigerant dates back more than a century, but CO2 fell out of favor in the air-conditioning and refrigeration industry with the development and commercialization of chlorofluorocarbons (CFCs) in the 1930s. Shortly thereafter, hydrochlorofluorocarbons (HCFCs), such as HCFC-22, were developed. HCFC-22 eventually became the primary refrigerant for stationary air-conditioning systems. When concerns grew about the depletion of the stratospheric ozone layer in the 1970s, countries enacted agreements to phase out CFCs and HCFCs.
Citation: ASHRAE Journal, Vol. 46, No. 11
Product Details
- Published:
- 2004
- Number of Pages:
- 2
- File Size:
- 1 file , 190 KB
- Product Code(s):
- D-22930
