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Analytical study of collector solar-gain enhancement by multiple reflectors

Author

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  • Kumar, Rakesh
  • Kaushik, S.C.
  • Garg, H.P.

Abstract

We have considered the general case of a collector with four reflectors. An analytical model is developed for study of the effect of an individual reflector on the collector. Reflectors R-1, R-2, R-3, and R-4 face south, north, west, and east, respectively. For a collector with two reflectors R-1 and R-2 on the southern and northern sides, up to 44% enhancement is achieved in the solar gain for December (winter) and up to 14% for May (summer). However, due to shadowing, two additional reflectors R-3 and R-4 on the eastern and western sides cause negligible additional solar gain. Without shadowing, enhancement in solar gain due to reflectors R-3 and R-4 is 14–36% for May and 44–56% for December for the Delhi climate.

Suggested Citation

  • Kumar, Rakesh & Kaushik, S.C. & Garg, H.P., 1995. "Analytical study of collector solar-gain enhancement by multiple reflectors," Energy, Elsevier, vol. 20(6), pages 511-522.
    • Handle: RePEc:eee:energy:v:20:y:1995:i:6:p:511-522
    DOI: 10.1016/0360-5442(94)00088-K
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    Cited by:

    1. Murugan, M. & Vijayan, R. & Saravanan, A. & Jaisankar, S., 2019. "Performance enhancement of centrally finned twist inserted solar collector using corrugated booster reflectors," Energy, Elsevier, vol. 168(C), pages 858-869.
    2. Chauhan, Ranchan & Singh, Tej & Thakur, N.S. & Kumar, Nitin & Kumar, Raj & Kumar, Anil, 2018. "Heat transfer augmentation in solar thermal collectors using impinging air jets: A comprehensive review," Renewable and Sustainable Energy Reviews, Elsevier, vol. 82(P3), pages 3179-3190.
    3. Hussein, H.M.S. & Ahmad, G.E. & Mohamad, M.A., 2000. "Optimization of operational and design parameters of plane reflector-tilted flat plate solar collector systems," Energy, Elsevier, vol. 25(6), pages 529-542.
    4. Chung-Feng Jeffrey Kuo & Sheng-Siang Syu & Chung-Yang Shih & Wei-Lun Lan & Chao-Yang Huang, 2017. "Optimization and practical verification of system configuration parameter design for a photovoltaic thermal system combined with a reflector," Journal of Intelligent Manufacturing, Springer, vol. 28(4), pages 1017-1029, April.
    5. Pavlović, Zoran T. & Kostić, Ljiljana T., 2015. "Variation of reflected radiation from all reflectors of a flat plate solar collector during a year," Energy, Elsevier, vol. 80(C), pages 75-84.

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