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Applied Optics

Applied Optics


  • Vol. 24, Iss. 2 — Jan. 15, 1985
  • pp: 296–298

Solar limb darkening and ray trace evaluation of solar concentrators

B. S. Negi, N. C. Bhowmik, S. S. Mathur, and T. C. Kandpal  »View Author Affiliations

Applied Optics, Vol. 24, Issue 2, pp. 296-298 (1985)

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A comparison of different correlations commonly used to describe the limb darkening effect is made. A somewhat new correlation is proposed which predicts the values to within ±1.5% of the experimental values. Using a conventional ray trace technique and assigning proper weight factors to each ray, the distribution of the local concentration ratio over a flat absorber placed in the focal plane of a cylindrical parabolic trough is also determined.

© 1985 Optical Society of America

Original Manuscript: July 23, 1984
Published: January 15, 1985

B. S. Negi, N. C. Bhowmik, S. S. Mathur, and T. C. Kandpal, "Solar limb darkening and ray trace evaluation of solar concentrators," Appl. Opt. 24, 296-298 (1985)

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  1. S. S. Mathur, T. C. Kandpal, R. N. Singh, Solar Concentrators, A Bibliography (Innovative Information, Inc., P.O. Box 408, Greenbelt, Md., 1982).
  2. C. G. Abbot, F. E. Fowle, L. B. Aldrich, Ann. Astrophys. Obs. Smithson. Inst. 4, 221 (1922).
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  5. P. D. Jose, “The Flux Through the Focal Spot of a Solar Furnace,” Sol. Energy 1, 19 (1957). [CrossRef]
  6. F. W. Lipps, M. D. Walzel, “An Analytic Evaluation of the Flux Density due to Sunlight Reflected from a Flat Mirror Having a Polygonal Boundary,” Sol. Energy 21, 113 (1978). [CrossRef]
  7. D. L. Evans, “On the Performance of Cylindrical Parabolic Solar Concentrators with Flat Absorbers,” Sol. Energy 19, 379 (1977). [CrossRef]

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