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ASTM E1918-21
Standard Test Method for Measuring Solar Reflectance of Horizontal and Low-Sloped Surfaces in the Field
NORMA vydaná dňa 1.10.2021
Informácie o norme:
Označenie normy: ASTM E1918-21
Dátum vydania normy: 1.10.2021
Kód tovaru: NS-1038063
Počet strán: 5
Približná hmotnosť: 15 g (0.03 libier)
Krajina: Americká technická norma
Kategória: Technické normy ASTM
Kategórie - podobné normy:
Anotácia textu normy ASTM E1918-21 :
Keywords:
pyranometer, solar energy, solar reflectance,, ICS Number Code 17.180.20 (Colours and measurement of light)
Doplňujúce informácie
| Significance and Use | ||||
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5.1?Solar reflectance is an important factor affecting the temperature of a sunlit surface and that of the near-surface ambient air temperature. The test method described herein measures the solar reflectance of surfaces in natural sunlight. |
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| 1. Scope | ||||
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1.1?This test method covers the measurement of solar reflectance of various horizontal and low-sloped surfaces and materials in the field, using an albedometer or pyranometer. The test method is intended for use when the sun angle to the normal from a surface is less than 45?. 1.2?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. |
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| 2. Referenced Documents | ||||
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