A museum project is undergoing a major renovation and is being modeled for energ

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试卷: LEED AP BD+C模拟题D[查看]
A museum project is undergoing a major renovation and is being modeled for energy use.
The baseline building project has an energy cost of $221,632 / year. The proposed
building has an energy cost of $140,683 / year. How much additional energy must be
saved to earn a point in the Innovation in Design category for optimizing energy
performance?
A: $12,641
B: $29,867
C: $21,001
D: $19,682

参考答案: C

本题解释:
Notes:
The following minimum energy cost savings will earn an additional point in the Innovation
in Design category:
New buildings: 50%
Existing building renovation: 46%
In this example the project was a major renovation. To earn an ID point the project must
use 46% less electricity from the baseline.
The percent improvement is a calculation of:
100 X (1 - (proposed building performance / baseline building performance) =
100 X (1 - (140,683 / 221,632)) = 36.53%
Currently the project uses $140,683 / year
To use 46% less electricity the proposed building must use:
$221,632 X 0.46 = $101,950
$221,632 - $101,950 = $119,682
The project must save an additional:
$140,683 - $119,682 = $21,001 / year
To prove the numbers we can plug in our results.
The proposed building performance that would earn an ID point is $140,683 - $21,001 =
$119,682
100 X (1 - ($119,682 / $221,632) = 46%