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Standard Practice for Exposure of Solar Collector Cover Materials to Natural Weathering Under Conditions Simulating Stagnation Mode
Automaticky přeložený název:
Standardní praxe týkající se expozice solárního kolektoru krycích materiálů, které mají režim povětrnostním vlivům za podmínek simulující stagnace
NORMA vydána dne 1.1.1996
Označení normy: ASTM E881-92(1996)
Poznámka: NEPLATNÁ
Datum vydání normy: 1.1.1996
Kód zboží: NS-48357
Počet stran: 8
Přibližná hmotnost: 24 g (0.05 liber)
Země: Americká technická norma
Kategorie: Technické normy ASTM
Keywords:
Solar collectors, Stagnation conditions, exposure of solar collector cover materials to natural weathering (in, conditions simulating stagnation mode), practice,, Weathering-solar devices, exposure to natural weathering (in conditions simulating stagnation, mode), practice
1. Scope | ||||||||||||
1.1 This practice provides a procedure for the exposure of solar collector cover materials to the natural weather environment at elevated temperatures that approximate stagnation conditions in solar collectors having a combined back and edge loss coefficient of less than 1.5 W/(m [dot]°C). 1.2 This practice is suitable for exposure of both glass and plastic solar collector cover materials. Provisions are made for exposure of single and double cover assemblies to accommodate the need for exposure of both inner and outer solar collector cover materials. 1.3 This practice does not apply to cover materials for evacuated collectors, photovoltaic cells, flat-plate collectors having a combined back and edge loss coefficient greater than 1.5 W/(m [dot]°C), or flat-plate collectors whose design incorporates means for limiting temperatures during stagnation. 1.4 This standard does not purport to address all of the safety problems, 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. |
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