Photovoltaic module soiling studies, May 1978-October 1980

One of 14 reports in the series: Low-Cost Solar Array Project available on this site.

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Description

The retention of particulate contamination on the surface of flat-plate photovoltaic devices is adversely affecting electrical performance of outdoor-exposed modules. The results of an experimental study being performed by the Jet Propulsion Laboratory's Low-Cost Solar Array Project to characterize and understand the effects of outdoor contaminants on sensitive optical surfaces of flat-plate photovoltaic modules and cover materials are described. Comparative electrical and optical performance data from photovoltaic modules and materials subjected to outdoor exposure at field test sites throughout the United States have been collected and examined. The results show significant time- and site-dependence. During periods when natural removal processes ... continued below

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Pages: 51

Creation Information

Hoffman, A.R. & Maag, C.R. November 1, 1980.

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The retention of particulate contamination on the surface of flat-plate photovoltaic devices is adversely affecting electrical performance of outdoor-exposed modules. The results of an experimental study being performed by the Jet Propulsion Laboratory's Low-Cost Solar Array Project to characterize and understand the effects of outdoor contaminants on sensitive optical surfaces of flat-plate photovoltaic modules and cover materials are described. Comparative electrical and optical performance data from photovoltaic modules and materials subjected to outdoor exposure at field test sites throughout the United States have been collected and examined. The results show significant time- and site-dependence. During periods when natural removal processes do not dominate, the rate of particulate contamination accumulation appears to be largely material-independent. The effectiveness of natural removal processes, especially rain, is strongly material-dependent. Glass and acrylic top-cover materials retain fewer particles than silicone rubber does. Side-by-side outdoor exposure testing for long duration is presently the most effective means of evaluating soiling differences between materials. Changes in spectral transmission as a function of time and location and limited scattering data are presented.

Physical Description

Pages: 51

Notes

NTIS, PC A04/MF A01.

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  • Report No.: DOE/JPL-1012-49
  • Grant Number: AI01-76ET20356
  • DOI: 10.2172/6747369 | External Link
  • Office of Scientific & Technical Information Report Number: 6747369
  • Archival Resource Key: ark:/67531/metadc1200308

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Office of Scientific & Technical Information Technical Reports

Reports, articles and other documents harvested from the Office of Scientific and Technical Information.

Office of Scientific and Technical Information (OSTI) is the Department of Energy (DOE) office that collects, preserves, and disseminates DOE-sponsored research and development (R&D) results that are the outcomes of R&D projects or other funded activities at DOE labs and facilities nationwide and grantees at universities and other institutions.

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Creation Date

  • November 1, 1980

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Added to UNT Digital Library

  • July 3, 2018, 8:14 a.m.

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  • March 8, 2019, 4:53 p.m.

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Hoffman, A.R. & Maag, C.R. Photovoltaic module soiling studies, May 1978-October 1980, report, November 1, 1980; Pasadena, California. (https://digital.library.unt.edu/ark:/67531/metadc1200308/: accessed April 9, 2020), University of North Texas Libraries, UNT Digital Library, https://digital.library.unt.edu; crediting UNT Libraries Government Documents Department.