What would a project team use to compare different product”s abilities to rejec

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试卷: LEED GA模拟题A[查看]
What would a project team use to compare different product”s abilities to reject solar heat?
A: Solar Reflectance Index (SRI)
B: Emissivity
C: Perviousness
D: Albedo

参考答案: A

本题解释:
Solar Reflectance Index (SRI) indicates a material\\\'s ability to reject solar heat and is the combined value of reflectivity and emittance. Measurements vary from 100 (standard white surface, most reflective) to 0 (standard black surface, least reflective). Materials with the highest SRI values are the coolest choices for paving.



LEED requires materials with certain SRI values to meet the requirements of some credits. Materials come with SRI values to allow comparison;The emissivity of a material is the ratio of energy radiated by a particular material to energy radiated by a black body at the same temperature. It is a measure of a material\\\'s ability to radiate absorbed energy;Perviousness is how much water a material allows through; Albedo (or solar reflectance) is a material\\\'s ability to reflect sunlight measured on a scale of 0 (black) to 1 (white). A value of 0.0 indicates that the surface absorbs all solar radiation and a value of 1.0 represents total reflectivity.

Reference: LEED for Existing Buildings: Operations & Maintenance Reference Guide, Glossary