A new analytical method—First-principle OPTical Intercept Calculation (FirstOPTIC)—is presented here for optical evaluation of trough collectors. It employs first-principle optical treatment of collector optical error sources and derives analytical mathematical formulae to calculate the intercept factor of a trough collector. A suite of MATLAB code is developed for FirstOPTIC and validated against theoretical/numerical solutions and ray-tracing results. It is shown that FirstOPTIC can provide fast and accurate calculation of intercept factors of trough collectors. The method makes it possible to carry out fast evaluation of trough collectors for design purposes. The FirstOPTIC techniques and analysis may be naturally extended to other types of CSP technologies such as linear-Fresnel collectors and central-receiver towers.
A New Optical Evaluation Approach for Parabolic Trough Collectors: First-Principle OPTical Intercept Calculation
Contributed by the Solar Energy Division of ASME for publication in the JOURNAL OF SOLAR ENERGY ENGINEERING. Manuscript received December 2, 2011; final manuscript received June 5, 2012; published online July 5, 2012. Assoc. Editor: Akiba Segal. The United States Government retains, and by accepting the article for publication, the publisher acknowledges that the United States Government retains, a nonexclusive, paid-up, irrevocable, worldwide license to publish or reproduce the published form of this work, or allow others to do so, for United States government purposes.
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Zhu, G., and Lewandowski, A. (July 5, 2012). "A New Optical Evaluation Approach for Parabolic Trough Collectors: First-Principle OPTical Intercept Calculation." ASME. J. Sol. Energy Eng. November 2012; 134(4): 041005. https://doi.org/10.1115/1.4006963
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