Why are CFCs being phased out in refrigeration applications?

CFCs, or chlorofluorocarbons, are being phased out in refrigeration applications primarily because of their ozone-depleting potential. During their use, CFCs can release chlorine atoms into the atmosphere, which have damaging effects on the ozone layer that protects the Earth from harmful ultraviolet (UV) radiation. The depletion of the ozone layer can lead to increased rates of skin cancer, cataracts, and other health issues, as well as negative impacts on the environment and ecosystems.

The global response to the environmental threat posed by CFCs has resulted in international agreements such as the Montreal Protocol, which aims to reduce and eliminate substances that deplete the ozone layer. Transitioning away from CFCs to more environmentally friendly alternatives is essential for protecting the ozone layer and addressing climate change.

While factors like cost, efficiency, and corrosion control are important in selecting refrigerants, they do not capture the critical reason behind the phase-out of CFCs, which is directly related to their harmful impact on atmospheric ozone.