ASTM International - ASTM E971-11(2019)

Standard Practice for Calculation of Photometric Transmittance and Reflectance of Materials to Solar Radiation

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Organization: ASTM International
Publication Date: 1 October 2019
Status: active
Page Count: 5
ICS Code (Solar energy engineering): 27.160
significance And Use:

5.1 Glazed apertures in buildings are commonly utilized for the controlled admission of both light and solar radiant heat energy into the structure. Other devices may also be used to reflect light... View More

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 The values stated in SI units are to be regarded as standard. No other units of measurement are included in this standard.

1.4 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, health, and environmental practices and determine the applicability of regulatory limitations prior to use.

1.5 This international standard was developed in accordance with internationally recognized principles on standardization established in the Decision on Principles for the Development of International Standards, Guides and Recommendations issued by the World Trade Organization Technical Barriers to Trade (TBT) Committee.

Document History

ASTM E971-11(2019)
October 1, 2019
Standard Practice for Calculation of Photometric Transmittance and Reflectance of Materials to Solar Radiation
5.1 Glazed apertures in buildings are commonly utilized for the controlled admission of both light and solar radiant heat energy into the structure. Other devices may also be used to reflect light...
August 15, 2011
Standard Practice for Calculation of Photometric Transmittance and Reflectance of Materials to Solar Radiation
Glazed apertures in buildings are commonly utilized for the controlled admission of both light and solar radiant heat energy into the structure. Other devices may also be used to reflect light and...
January 1, 1996
Standard Practice for Calculation of Photometric Transmittance and Reflectance of Materials to Solar Radiation
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...
August 26, 1988
Standard Practice for Calculation of Photometric Transmittance and Reflectance of Materials to Solar Radiation
Glazed apertures in buildings are commonly utilized for the controlled admission of both light and solar radiant heat energy into the structure. Other devices may also be used to reflect light and...
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