Standard Historical Last Updated: Oct 11, 2021 Track Document
ASTM E1918-16

Standard Test Method for Measuring Solar Reflectance of Horizontal and Low-Sloped Surfaces in the Field

Standard Test Method for Measuring Solar Reflectance of Horizontal and Low-Sloped Surfaces in the Field E1918-16 ASTM|E1918-16|en-US Standard Test Method for Measuring Solar Reflectance of Horizontal and Low-Sloped Surfaces in the Field Standard new BOS Vol. 04.04 Committee D08
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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.

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°.

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Details
Book of Standards Volume: 04.04
Developed by Subcommittee: D08.18
Pages: 5
DOI: 10.1520/E1918-16
ICS Code: 17.180.20