在评价材料对降低热岛效应的效果时，下列哪项材料属性最重要？

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试卷: LEED v4 GA模拟题A卷中文[查看]
在评价材料对降低热岛效应的效果时，下列哪项材料属性最重要？When evaluating materials that would help with heat-island reduction, which of the following is the MOST important material attribute?
A: An SRI
B: An SR
C: 三年期SRI或SR值（A three-year aged SRI or SR value）
D: 热辐射（Thermal emittance）

参考答案: C

本题解释:
正确答案：C
系统解析: 暂无解析
C:New in LEED v4 is the three-year aged SRI value as a performance measurement of roofing/hardscape materials. The three-year aged SR or SRI value is ’a solar reflectance or solar reflectance index rating that is measured after three years of weather exposure.’ - USGBC
What this indicates is how good the product is going to be performing after three years outside. Consider a highly reflective white roof. When it’s installed, it’s clean and bright white, but the sun beats down on it day after day, it gets rained on, dust in the air collects on it, etc. After a period of time, it’s no longer as bright, and thus performs less optimally. The three-year aged rating takes this into account.