Why do natural refrigerants have greater global warming potential than refrigera

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试卷: LEED GA模拟题E[查看]
Why do natural refrigerants have greater global warming potential than refrigerants that can damage the ozone layer?
A: They produce more sulfur dioxide in the refrigeration process
B: They are less efficient
C: They require water use
D: They have higher leakage rates

参考答案: B

本题解释:
Notes:

Reference: The Treatment by LEED of the Environmental Impact of HVAC Refrigerants
A:This is not correct.
B:Thermodynamic properties make the HFCs (and natural refrigerants) slightly less efficient refrigerants than the HCFCs given idealized equipment design, so the same amount of cooling may require more electricity and thereby causes the indirect release of more CO2 in generating that electricity. The dilemma, therefore, is that some refrigerants cause more ozone depletion than others, but the most ozone-friendly refrigerants cause more global warming.
C:This is not correct.
D:Natural refrigerants have no more or less leakage rates than other refrigerants.