期刊
SOLAR ENERGY
卷 97, 期 -, 页码 414-417出版社
PERGAMON-ELSEVIER SCIENCE LTD
DOI: 10.1016/j.solener.2013.09.006
关键词
Concentrator photovoltaic; Anti-soiling; Fresnel lens; Photocatalyst; Electrostatic potential
资金
- incorporated administrative agency New Energy and Industrial Technology Development Organization (NEDO) under the Ministry of Economy, Trade and Industry (METI)
An anti-soiling layer was coated on the surface of polymethylmethacrylate (PM MA), which is the primary material of Fresnel lenses for concentrator photovoltaics. The layer was prepared by coating the photocatalytic surface layer with modified WO3 and partially hydrolyzed tetraethyl orthosilicate. When sand was discharged onto the PMMA samples, the mass of adherent sand was more than 0.010 g for the sample without the coating and approximately 0.005 g for the sample with the coating. The electrostatic potential of the sample without the coating increased with increasing amount of incident sand, reaching a maximum value of 0.25 kV. On the other hand, the electrostatic potential of the sample with the coating was suppressed to 0.10 kV. The presence of electrostatic charges on the surface of the samples was a main factor for the adhesion of sand, and it could be suppressed by the anti-soiling photocatalytic layer. (C) 2013 Elsevier Ltd. All rights reserved.
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