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Find out what cookies we use and how to disable themThis document specifies laboratory test methods to assess the durability of silvered float-glass reflectors with high technical performance to be used in concentrating solar technologies. The reflectors under the scope of this standard are composed by a float-glass substrate and a reflecting silver layer, which is protected by a thin copper layer and an anticorrosive paint system composed by a base and a top coating, and an optional intermediate coating.
This standard defines multiple accelerated aging tests on reflector samples of size of 10 cm × 10 cm or larger. It defines the measurement methods to determine the degradation parameters used for assessment and the acceptance criteria of the accelerated aging tests.
Annex A of this standard outlines the procedure to apply this standard to reflector types of different composition than the silvered float-glass reflectors described above.
Annex B provides information how to roughly correlate the measured degradation of selected accelerated aging tests with outdoor exposure in different environments. These correlations are strictly limited to silvered float-glass reflector types with the abovementioned layer stack, since differing coating types are likely to introduce unforeseen degradation modes, which might not be triggered under the proposed testing conditions.
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