A new two-dimensional concentrator for solar energy collection has been developed. The concentrator has the following advantages, when compared with the classic Compound Parabolic Concentrators invented by Roland Winston, W. T. Welford, A. Rabl, Baranov, and other researchers: 1) It allows the use of parabolic mirrors, which have a reflecting area much smaller for a given concentration ratio and acceptance angle. 2) Between the mirror and the absorber, there is a large gap so that conduction losses are reduced. Convection losses can be reduced, too, if the absorber is enclosed within a glass tube. 3) It can be easily manufactured. Instead of seeking the shape of the mirrors for a given shape of the absorber, we have made the inverse statement of the problem, and we have obtained the optimal shapes of the absorbers with a prescribed acceptance angle, for parabolic mirrors, assuming that the intercept factor is unity, the mirrors are perfect, and the absorber surfaces are convex. The concentrator should be east-west oriented, and could be seasonal or monthly tilt adjusted. This concentrator could have many practical applications, such as fluid heating, steam generation, etc.
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February 2002
Technical Papers
A New Troughlike Nonimaging Solar Concentrator
Eduardo A. Rinco´n,
e-mail: erincon@coatepec.uaemex.mx
Eduardo A. Rinco´n
Facultad de Ingenierı´a, Universidad Auto´noma del Estado de Me´xico, Cerro de Coatepec, C.U., 50130 Toluca, Me´xico
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Fidel A. Osorio
Fidel A. Osorio
Facultad de Ingenierı´a, Universidad Auto´noma del Estado de Me´xico, Cerro de Coatepec, C.U., 50130 Toluca, Me´xico
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Eduardo A. Rinco´n
Facultad de Ingenierı´a, Universidad Auto´noma del Estado de Me´xico, Cerro de Coatepec, C.U., 50130 Toluca, Me´xico
e-mail: erincon@coatepec.uaemex.mx
Fidel A. Osorio
Facultad de Ingenierı´a, Universidad Auto´noma del Estado de Me´xico, Cerro de Coatepec, C.U., 50130 Toluca, Me´xico
Contributed by the Solar Energy Division of the American Society of Mechanical Engineers for publication in the ASME JOURNAL OF SOLAR ENERGY ENGINEERING. Manuscript received by the ASME Solar Energy Division, Apr. 2001; final revision, Jun. 2001. Associate Editor: R. Hogan.
J. Sol. Energy Eng. Feb 2002, 124(1): 51-54 (4 pages)
Published Online: June 1, 2001
Article history
Received:
April 1, 2001
Revised:
June 1, 2001
Citation
Rinco´n, E. A., and Osorio, F. A. (June 1, 2001). "A New Troughlike Nonimaging Solar Concentrator ." ASME. J. Sol. Energy Eng. February 2002; 124(1): 51–54. https://doi.org/10.1115/1.1435650
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