In refrigerant selection, which combination best reflects environmental considerations?

In refrigerant selection, which combination best reflects environmental considerations?

• A. Always choose the one with the lowest GWP, regardless of ODP.
• B. ODP is the only factor to consider in environmental impact.
• C. Ideal refrigerants have zero ODP and low GWP.
• D. GWP is not used in regulatory decisions.

Answer: (C)

Environmental considerations for refrigerants focus on two main effects: ozone layer protection and climate impact. ODP (ozone depletion potential) indicates how a substance could harm the ozone layer, while GWP (global warming potential) shows its long-term contribution to climate warming. The best choice is a refrigerant with zero ODP and low GWP because it protects the ozone layer and minimizes warming, addressing both environmental concerns at once. If you only chase the lowest GWP, you might still use a substance that harms the ozone layer; if you look only at ODP, you could ignore significant climate impact. And GWP does factor into regulatory decisions, so it’s a relevant consideration in choosing refrigerants.

Environmental considerations for refrigerants focus on two main effects: ozone layer protection and climate impact. ODP (ozone depletion potential) indicates how a substance could harm the ozone layer, while GWP (global warming potential) shows its long-term contribution to climate warming. The best choice is a refrigerant with zero ODP and low GWP because it protects the ozone layer and minimizes warming, addressing both environmental concerns at once. If you only chase the lowest GWP, you might still use a substance that harms the ozone layer; if you look only at ODP, you could ignore significant climate impact. And GWP does factor into regulatory decisions, so it’s a relevant consideration in choosing refrigerants.