What alternatives to HFCs exist?

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Multiple Choice

What alternatives to HFCs exist?

Explanation:
Focusing on reducing the climate impact of cooling systems, the alternatives to HFCs are refrigerants with low global warming potential. The reason this is the best choice is that the goal is to minimize the GWP of the refrigerant while maintaining performance and safety. Low-GWP refrigerants include natural options like carbon dioxide, ammonia, and hydrocarbons, as well as synthetic low-GWP options such as hydrofluoroolefins. The other options miss the point: high-GWP refrigerants would increase climate impact; having no refrigerants would stop cooling; combustion byproducts of HFCs are not used as refrigerants and do not serve as viable alternatives.

Focusing on reducing the climate impact of cooling systems, the alternatives to HFCs are refrigerants with low global warming potential. The reason this is the best choice is that the goal is to minimize the GWP of the refrigerant while maintaining performance and safety. Low-GWP refrigerants include natural options like carbon dioxide, ammonia, and hydrocarbons, as well as synthetic low-GWP options such as hydrofluoroolefins. The other options miss the point: high-GWP refrigerants would increase climate impact; having no refrigerants would stop cooling; combustion byproducts of HFCs are not used as refrigerants and do not serve as viable alternatives.

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