DISPERSION IN TAILORED FRESNEL LENS CONCENTRATORS

摘要：

Concentrating photovoltaics (CPV) often use Fresnel lenses, which are characterized by focal foreshortening and dispersion. These aberrations must be accounted for when designing Fresnel lenses for CPV applications. We discuss the dependence of the concentration limit of solar Fresnel lenses on dispersion in detail. For typical Fresnel lenses, dispersion creates a beam width in the order of the receiver size. Consequently, it is impossible to achieve a prescribed irradiance distribution on the target of refractive solar collectors with a concentration ratio above 500 suns, or for aspect ratios small or large.

作者: Ralf Leutz Ling Fu

作者单位: Physics Department, Philipps-University Renthof 5 35037 Marburg, Germany OEC AG Lindwurmstrasse 41 80337 Munich, Germany

会议类型: 国际会议

会议名称: 2007世界太阳能大会(Proceedings of ISES Solar World Congress 2007)

会议地点: 北京

会议语种:英文

在线出版日期: 2007-09-18（万方平台首次上网日期，不代表论文的发表时间）