What substance did the Clean Air Act limit the production of in chillers due to its contribution to ozone depletion?

The Clean Air Act specifically targeted chlorofluorocarbons (CFCs) due to their significant role in stratospheric ozone depletion. CFCs are a class of compounds that were commonly used as refrigerants in chillers, among other applications. When CFCs are released into the atmosphere, they can rise to the stratosphere, where they are broken down by ultraviolet rays, releasing chlorine atoms that destroy ozone molecules. This degradation of the ozone layer increases UV radiation reaching the Earth, which has harmful effects on human health and ecosystems.

In the context of managing sport facilities, the impact on chillers is particularly relevant since these systems rely heavily on refrigerants. The phase-out and regulation of CFCs prompted facility managers to seek alternative substances that are less harmful to the environment while maintaining efficiency and performance in refrigeration systems. This understanding is vital in ensuring compliance with environmental regulations and promoting sustainable facility management practices.