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Proceedings Paper

Improved boost mirror for low-concentration photovoltaic solar power systems
Author(s): David Nelson Wells
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Paper Abstract

A new reflector surface and geometry using low-concentration mirror boosting of flat-plate photo voltaic devices is described. The overheating effects that have previously been seen using non-uniform, high reflectivity side mirrors have been reduced. The new high-stability reflector material has lower UV reflectivity that reduces panel ageing and over heating. A moderate reflectivity in the violet wavelength further cuts the level of overheating while sacrificing only minimally in electrical power output efficiency. The new surface maintains high, uniform reflectivity at green, yellow, red, and IR wavelengths. Mass-produced panels are undergoing tests, and some preliminary results are presented. Surface self-cleaning of hydrophilic and hydrophobic coating over the reflecting surface is also discussed. Other applications of the same mirror in the solar thermal field are briefly discussed. Some improved tracking PV geometry versions using the new material are presented.

Paper Details

Date Published: 20 August 2009
PDF: 9 pages
Proc. SPIE 7407, High and Low Concentrator Systems for Solar Electric Applications IV, 74070M (20 August 2009); doi: 10.1117/12.828312
Show Author Affiliations
David Nelson Wells, Consultant (United States)

Published in SPIE Proceedings Vol. 7407:
High and Low Concentrator Systems for Solar Electric Applications IV
Lori E. Greene, Editor(s)

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