ASTM-E1918 › Historical Revision Information
Standard Test Method for Measuring Solar Reflectance of Horizontal and Low-Sloped Surfaces in the Field
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Scope
1.1 This test method covers the measurement of solar reflectance of various horizontal and low-sloped surfaces and materials in the field, using a pyranometer. The test method is intended for use when the sun angle to the normal from a surface is less than 45°.
Significance and Use
5.1 Solar reflectance is an important factor affecting surface and near-surface ambient air temperature. Surfaces with low solar reflectance (typically 30 % or lower), absorb a high fraction of the incoming solar energy which is either conducted into buildings or convected to air (leading to higher air temperatures). Use of materials with high solar reflectance may result in lower air-conditioning energy use and cooler cities and communities. The test method described here measures the solar reflectance of surfaces in the field.
Keywords
pyranometer; solar energy; solar reflectance;; ICS Number Code 17.180.20 (Colours and measurement of light)
To find similar documents by ASTM Volume:
04.04 (Roofing and Waterproofing)
To find similar documents by classification:
17.180.20 (Colours and measurement of light)
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Document Number
ASTM-E1918-06(2015)
Revision Level
2006 R15 EDITION
Status
Superseded
Modification Type
Reapproval
Publication Date
Feb. 15, 2015
Document Type
Test Method
Page Count
4 pages
Committee Number
D08.18