Which of the following is the average payback period for the commissioning of ne

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试卷: LEED v4 GA模拟题C卷[查看]
Which of the following is the average payback period for the commissioning of new buildings?

A: 1.5 years
B: 2.6 years
C: 3.9 years
D: 4.8 years

参考答案: A

本题解释:
正确答案：A
系统解析: D:Commissioning can be expensive but, compared to the savings it achieves over time, it’s one of the best investments a building owner can make. There are many studies that show the benefits of commissioning with examples of installation errors that cost building owners thousands of dollars a year unnecessarily.

A study by the Lawrence Berkeley National Laboratory found the following: ’For existing buildings, we found median commissioning costs of $0.27/ft2, whole-building energy savings of 15 %, and payback times of 0.7 years. For new construction, median commissioning costs were $1.00/ft2 (0.6 % of total construction costs), yielding a median payback time of 4.8 years (excluding quantified non-energy impacts).’