A project\\\'s annual DHC pumping energy exceeds 3.5% of the systems\\\' annual

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试卷: LEED AP ND模拟题D[查看]
A project\'s annual DHC pumping energy exceeds 3.5% of the systems\' annual thermal output. By what percent must the DHC system be more efficient than the prescriptive requirements of ASHRAE 90.1-2007 to qualify for GIB Credit District Heating and Cooling?

A: 11%
B: 13.5%
C: 12.5%
D: 10%

参考答案: A

本题解释:
Any excess beyond 2.5% must be offset beyond the minimum 10% improvement over the prescriptive requirements.

The question stated the DHC system exceeded the 3.5% of the system\'s annual thermal output. It is allowed to exceed it by 2.5%. Since the difference is 1%, that amount must be made up over the minimum 10% improvement. 10% + 1% = 11%.