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Can anti-soiling coating on solar glass influence the degree of performance loss over time of PV modules drastically

: Klimm, E.

Volltext urn:nbn:de:0011-n-2669241 (299 KByte PDF)
MD5 Fingerprint: 8fe9daf34e150c20923716bc873f21ef
Erstellt am: 29.11.2013

Mine, A. ; European Commission:
28th European Photovoltaic Solar Energy Conference and Exhibition, EU PVSEC 2013. Proceedings. DVD-ROM : 30 September to 04 October 2013, Paris, France
München: WIP-Renewable Energies, 2013
ISBN: 3-936338-33-7
European Photovoltaic Solar Energy Conference and Exhibition (EU PVSEC) <28, 2013, Paris>
Konferenzbeitrag, Elektronische Publikation
Fraunhofer ISE ()
Photovoltaische Module; Systeme und Zuverlässigkeit; Photovoltaische Module und Kraftwerke; Photovoltaische Module - Systeme und Zuverlässigkeit; Gebrauchsdauer von Modulen und Materialien; Gebrauchsdaueranalyse und Umweltsimulation; Characterization; Degradation; analysis; Modeling; coating

The soiling of photovoltaic (PV) modules is an important issue regarding PV module power output. Depending on the environmental conditions, the different surface structures and anti-reflection coatings, which are applied on the glass in order to increase the annual gain of a PV module, may turn non-effective and glass transmittance may decrease below the level of unstructured or uncoated glass. Former investigations revealed enormous decreases in efficiency due to heavy soiling, up to -80% within a period of 6 month. Therefore, anti-soiling coatings, which aim to reduce these losses, are a very interesting and promising topic. The market for anti-soiling coatings was screened. Different commercialy available anti-soiling coatings are investigated regarding their functionality, their initial anti-soiling efficiency as well as in terms of weathering stability. A profitability analysis for a simulated 10 MW PV power plant is implemented in regard to the anti-soiling yield gain. The coated PV glazings show different susceptibilities to the soiling test methods. This indicates a variation in wettability of the coatings, monitored by contact angle tests during the intercourse of the study.