For LEED, if a project has an existing CFC-based refrigeration system and it is

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试卷: LEED GA模拟题E[查看]
For LEED, if a project has an existing CFC-based refrigeration system and it is not economically feasible to replace the system, what maximum annual leakage of the existing system is allowed?
A: 3%
B: 0%
C: 1%
D: 5%

参考答案: D

本题解释:
Notes:

Reference: LEED 2009 for New Construction and Major Renovations Rating System
For buildings with existing systems that use CFC-based refrigerants, the systems must be phased out within 5 years after the project is completed, unless a third-party audit shows the simple payback for retrofitting/replacement is more than 10 years.

For such projects, the refrigerant leakage rate must be reduced to no more than 5% each year.