ASTM-E971 › Standard Practice for Calculation of Photometric Transmittance and Reflectance of Materials to Solar Radiation
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Scope
1.1 This practice describes the calculation of luminous (photometric) transmittance and reflectance of materials from spectral radiant transmittance and reflectance data obtained from Test Method E903.
1.2 Determination of luminous transmittance by this practice is preferred over measurement of photometric transmittance by methods using the sun as a source and a photometer as detector except for transmitting sheet materials that are inhomogeneous, patterned, or corrugated.
1.3 This standard does not purport to address all of the safety concerns, if any, associated with its use. It is the responsibility of the user of this standard to establish appropriate safety and health practices and determine the applicability of regulatory limitations prior to use .
Keywords
Celestories; Fenestration; Glazed apertures; Photometric reflectance; Photometric transmittance; Reflectance and reflectivity;emsolar devices; Seals/sealants; Skylights; Solar energy; Solar spectral irradiance; Transmittance and reflectance;emsolar devices; Windows/window assemblies; photometric transmittance/reflectance of materials to solar radiation,; practice,;
To find similar documents by ASTM Volume:
12.02 (Nuclear (II), Solar, and Geothermal Energy)
To find similar documents by classification:
27.160 (Solar energy engineering Including photovoltaic energy systems)
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Document Number
ASTM-E0971-11R19
Revision Level
2011 R19 EDITION
Status
Current
Modification Type
Reapproval with Ed Change
Publication Date
Oct. 1, 2019
Document Type
Practice
Page Count
5 pages
Committee Number
E44.20