Which of the following is a natural refrigerant?

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试卷: LEED AP BD+C模拟题B[查看]
Which of the following is a natural refrigerant?
A: CO2
B: CFC
C: HFC
D: HCFC

参考答案: A

本题解释:
Carbon Dioxide (CO2) is classified as a natural refrigerant.
The Montreal Protocol banned CFCs. Developing nations signed on to phase
out the use of CFCs, while some other nations still produce and use CFCs.
Under the Montreal Protocol, CFC production in the United States ended in
1995. To implement the Montreal Protocol, the EPA established Section 608
of the EPA Clean Air Act for regulating the use and recycling of
ozone-depleting compounds.

HFCs typically have a negligible impact on the ozone layer, but many have a
significant global warming potential.

HCFCs are being phased out in the United States.

Reference: The Treatment by LEED of the Environmental Impact of HVAC Refrigerants