The effective size of the solar cone for solar concentrating systems

被引：60
作者：
Buie, D [1 ]
Dey, CJ [1 ]
Bosi, S [1 ]
机构：
[1] Univ Sydney, Sch Phys A28, Solar Energy Grp, Sydney, NSW 2006, Australia
来源：
SOLAR ENERGY | 2003年 / 74卷 / 05期
关键词：
insolation; concentrating systems; sunshape;
D O I：
10.1016/S0038-092X(03)00156-7
中图分类号：
TE [石油、天然气工业]; TK [能源与动力工程];
学科分类号：
0807 ; 0820 ;
摘要：
In this paper we define a virtual solar cone, whose principle axis is aligned with the solar vector, having a radial angular displacement containing a pre-defined proportion of the terrestrial solar radiation. By simulating various sunshape profiles, the angular extent of the energy distribution is established to give the effective size of the solar cone for a range of atmospheric conditions. Then, by simulating the reflection of these solar distributions off a set of non-ideal mirrored surfaces. accounting for non-specular reflection and mirror shape errors, the combined effect of sunshape and mirror properties on the solar image is obtained. Clear trends are presented that show the dependence of the effective size of the solar image on the accuracy of a mirrored surface for different sunshapes. We then identify the effective size of the solar image at the absorber plane that must be accommodated in the design and optimisation of solar concentrating systems. (C) 2003 Elsevier Ltd. All rights reserved.
引用
收藏
页码：417 / 427
页数：11
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