ASTM-E781 › Standard Practice for Evaluating Absorptive Solar Receiver Materials When Exposed to Conditions Simulating Stagnation in Solar Collectors With Cover Plates
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Scope
1.1 This practice covers a test procedure for evaluating absorptive solar receiver materials and coatings when exposed to sunlight under cover plate(s) for long durations. This practice is intended to evaluate the exposure resistance of absorber materials and coatings used in flat-plate collectors where maximum nonoperational stagnation temperatures will be approximately 200°C (392°F).
1.2 This practice shall not apply to receiver materials used in solar collectors without covers (unglazed) or in evacuated collectors, that is, those that use a vacuum to suppress convective and conductive thermal losses.
1.3 The values stated in SI units are to be regarded as the 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 and health practices and determine the applicability of regulatory limitations prior to use.
Keywords
Absorption;emsolar materials; evaluating absorptive solar receiver materials when exposed to; conditions simulating stagnation in solar collectors with cover plates,; practice,; Coatings; absorptive (solar) coatings, evaluating exposure resistance (when; exposed to conditions simulating stagnation) of coatings/materials in; flat plate solar collectors, practice,; Cover materials;emsolar collectors; evaluating absorptive solar receiving materials (when exposed to; conditions simulating stagnation), practice,; Exposure resistance; absorber materials/coatings in flat plate solar collectors (under cover; plates), when exposed to conditions simulating stagnation, practice,; Solar collectors; Stagnation conditions; evaluating absorptive materials (in collectors with cover plates), when; exposed to conditions simulating stagnation, practice,; Weathering;emsolar devices; exposure resistance (to conditions simulating stagnation), 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-E0781-86R23
Revision Level
1986 R23 EDITION
Status
Current
Modification Type
Reapproval
Publication Date
May 5, 2023
Document Type
Practice
Page Count
5 pages
Committee Number
E44.05