2ND-STAGE CONCENTRATION WITH TAPERS FOR FLUORESCENT SOLAR COLLECTORS

被引:11
作者
GOETZBERGER, A
SCHIRMER, O
机构
[1] Institut für Angewandte Festkörperphysik, Fraunhofer-Gesellschaft, Freiburg, D-7800
来源
APPLIED PHYSICS | 1979年 / 19卷 / 01期
关键词
84.60; 85.60;
D O I
10.1007/BF00900538
中图分类号
O59 [应用物理学];
学科分类号
摘要
Light concentration of fluorescent sheet collectors can be enhanced by providing the output edges with a taper of a higher refractive index with reflecting surfaces. Concentration ratios achievable by this means are computed for two shapes of tapers, one with a plane boundary towards the collector and one with an additional cylindric lens. The general limitation of concentration ratio is given by Liouville's theorem or Abbe's sine condition. Computed second stage concentration ratios are: 1) For plane boundary taper and n 1=1.5, n 2=2 and three reflections in the taper:C=1.49, and 2) for the lens-taper combination under the same conditions:C=1.76, nearly reaching the Liouville limit, 1.79. © 1979 Springer-Verlag.
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页码:53 / 58
页数:6
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