| Description |
1 online resource (12 p.) : ill. |
| Series |
Conference paper ; NREL/CP-520-44968 |
|
Conference paper (National Renewable Energy Laboratory (U.S.)) ; 520-44968.
|
| Note |
Title from title screen (viewed August 4, 2009). |
|
"July 2009." |
|
"To be presented at the Society of Photographic Instrumentation Engineers (SPIE) 2009 Solar Energy + Technology Conference, San Diego, California, August 2-6, 2009." |
| Bibliography |
Includes bibliographical references (p. 12). |
| Summary |
Concentrated photovoltaics (CPV) has recently gained interest based on its scalability and expected low levelized cost of electricity. The reliability of materials used in CPV systems, however, is not well established. The current qualification test for photodegradation of CPV modules includes only real-time ultraviolet (UV) exposure, i.e. methods for accelerated UV testing have not been developed. Therefore, the UV and infrared (IR) spectra transmitted through representative optical systems are evaluated in this paper. The measurements of concentrating optics are used to assess expected optical performance as well as to understand how to quantify damaging optical exposure. Optical properties (transmittance, refractive index, reflectance, and absorptance) of candidate materials are identified. The dose and flux analysis here identifies the increased significance of IR (as opposed to UV) exposure for CPV systems, particularly for the most concentrating systems. For these, the UV dose may not greatly exceed the unconcentrated global solar condition, but the thermal load scales nearly directly with the geometric concentration. |
| Funding |
PVB76701 |
| Subject |
Solar concentrators -- Materials -- Optical properties.
|
|
Solar collectors -- Research.
|
|
Photovoltaic power systems.
|
| Added Author |
Miller, D. C.
|
|
National Renewable Energy Laboratory (U.S.)
|
| Gpo Item No. |
0430-P-04 (online) |
| Sudoc No. |
E 9.17:NREL/CP-520-44968 |
|
