Ultra-accelerated natural sunlight exposure testing facilities
A multi-faceted concentrator apparatus for providing ultra-accelerated natural sunlight exposure testing for sample materials under controlled weathering conditions comprising: facets that receive incident natural sunlight, transmits VIS/NIR and reflects UV/VIS to deliver a uniform flux of UV/VIS onto a sample exposure plane located near a center of a facet array in chamber means that provide concurrent levels of temperature and/or relative humidity at high levels of up to 100.times. of natural sunlight that allow sample materials to be subjected to accelerated irradiance exposure factors for a significant period of time of about 3 to 10 days to provide a corresponding time of about at least a years worth representative weathering of sample materials.
- Research Organization:
- National Renewable Energy Laboratory (NREL), Golden, CO (United States)
- Sponsoring Organization:
- USDOE
- Assignee:
- Midwest Research Institute (Kansas City, MO)
- Patent Number(s):
- 6,604,436
- Application Number:
- 09/521,731
- OSTI ID:
- 1174440
- Country of Publication:
- United States
- Language:
- English
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Ultra-accelerated natural sunlight exposure testing
Ultra-accelerated natural sunlight exposure testing