Ray trace evaluation of solar concentrators including limb darkening effects

The different correlations used to calculate intensity distribution over the sun's disc are compared. A new correlation is suggested which predicts the values to within ± 1.5 per cent of the experimental values. The distribution of local concentration ratio over a flat absorber placed in the fo...

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Bibliographic Details
Published in:Solar energy 1986, Vol.36 (3), p.293-296
Main Authors: Negi, B.S., Bhowmik, N.C., Mathur, S.S., Kandpal, T.C.
Format: Article
Language:English
Subjects:
Applied sciences
Energy
Exact sciences and technology
Natural energy
Solar energy
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Summary:The different correlations used to calculate intensity distribution over the sun's disc are compared. A new correlation is suggested which predicts the values to within ± 1.5 per cent of the experimental values. The distribution of local concentration ratio over a flat absorber placed in the focal plane of a cylindrical parabolic trough and that of a polygonal trough is determined using a ray-tracing technique.
ISSN:0038-092X
1471-1257
DOI:10.1016/0038-092X(86)90145-3