Accelerated aging test of solar mirrors: Comparison of different UV chambers

This study aimed to compare three accelerated aging chambers with different lamps and irradiance levels: Suntest XXL+ and Sepap 12/24 from ATLAS MTS and UV5X from AMC/AMTC. Five kinds of solar mirrors were tested: thin and thick monolithic glass, laminated glass, aluminum and a glass mirror stick on...

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Bibliographic Details
Main Authors: Avenel, Coralie, Gardette, Jean-Luc, Therias, Sandrine, Disdier, Angela, Raccurt, Olivier
Format: Conference Proceeding
Language:English
Subjects:
Accelerated aging tests
Accelerated tests
Aging
Aluminum
Chambers
Glass
Irradiance
Irradiation
Mirrors
Optical microscopy
Reflectance
Reproducibility
Safety glass
Substrates
Temperature
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Summary:This study aimed to compare three accelerated aging chambers with different lamps and irradiance levels: Suntest XXL+ and Sepap 12/24 from ATLAS MTS and UV5X from AMC/AMTC. Five kinds of solar mirrors were tested: thin and thick monolithic glass, laminated glass, aluminum and a glass mirror stick on a composite polymer substrate. All samples were aged under irradiation with a temperature set onto 70 °C. Temperatures were measured directly onto samples in addition to the chamber value. Temperature was kept constant and equal in each device in order to get the same acceleration factor due to temperature for all aging. This allowed comparing the effect of irradiation only. Specular reflectance was measured at several intervals during aging, and silver and paints surfaces were monitored by optical microscopy. This study is included in the framework of the STAGE-STE European project. One of the objectives is to establish a standard for CSP mirrors accelerated aging tests. Results of aging are needed to understand which tests are relevant to each available technology of mirror. Furthermore, a standard aimed to be applied in any device which can reach required conditions, so influence of these devices has to be known to ensure the reproducibility of aging between chambers and laboratories.
ISSN:0094-243X
1551-7616
DOI:10.1063/1.4984495