What is lighting power density measured in?

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试卷: LEED GA模拟题D[查看]
What is lighting power density measured in?
A: Footcandles per floor area
B: The quantity of light trespass on adjacent sites, measured in watts
C: Installed lighting power per unit area
D: Number of luminaires per unit area

参考答案: C

本题解释:
Notes:

Reference: LEED 2009 for New Construction and Major Renovations Rating System
A/B/D: This is incorrect.

Lighting power density is the installed lighting power per unit area (the amount of electrical power used to illuminate a space). It is usually expressed in Watts per unit of area.

Reducing the lighting power density can reduce energy use.