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Spectral calculation of the thermal performance of a solar pond and comparison of the results with experiments

Author

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  • Li , Xiang Yi
  • Kanayama, Kimio
  • Baba, Hiromu

Abstract

This paper deals with a method and the result of the spectroscopic calculation on heat balance of a salt-gradient solar pond under the conditions of spectral solar radiation. Furthermore, reflection of the ray incident upon the surface of the pond water, refraction of the rays within the salt-water layer and diffusion of salt in the pond water are considered. On the other hand, in order to make a clear mechanism of the heat collection and heat storage of the solar pond, we conducted an indoor experiment and a numerical analysis on a small scale model of the salt-gradient solar pond with 2 m2 surface area and 1.6 m depth, under the incident rays from a Xe-lamp solar simulator. According to the above experimental analysis, we made a simulation model of thermal performance for a solar pond and carried out the calculation from the heat balance. We found that the simulation calculations correspond well to the experimental results, so that our thermal simulation model and method might be correct. We also did the thermal calculation by changing the incident rays from a Xe-lamp into natural ray (Moon’s spectrum) and Halogen lamp. As a result, it was found that the temperature distributions in the solar pond were notably different due to spectral characteristics of the incident ray. Therefore, the spectroscopic consideration for thermal performance of any solar pond is necessary to obtain a correct solution under the spectral incidence with special wavelength distributions.

Suggested Citation

  • Li , Xiang Yi & Kanayama, Kimio & Baba, Hiromu, 2000. "Spectral calculation of the thermal performance of a solar pond and comparison of the results with experiments," Renewable Energy, Elsevier, vol. 20(4), pages 371-387.
  • Handle: RePEc:eee:renene:v:20:y:2000:i:4:p:371-387
    DOI: 10.1016/S0960-1481(99)00119-6
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    Citations

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    Cited by:

    1. Bezir, Nalan Ç. & Dönmez, Orhan & Kayali, Refik & Özek, Nuri, 2008. "Numerical and experimental analysis of a salt gradient solar pond performance with or without reflective covered surface," Applied Energy, Elsevier, vol. 85(11), pages 1102-1112, November.
    2. Velmurugan, V. & Srithar, K., 2008. "Prospects and scopes of solar pond: A detailed review," Renewable and Sustainable Energy Reviews, Elsevier, vol. 12(8), pages 2253-2263, October.
    3. Kurt, Hüseyin & Ozkaymak, Mehmet & Binark, A. Korhan, 2006. "Experimental and numerical analysis of sodium-carbonate salt gradient solar-pond performance under simulated solar-radiation," Applied Energy, Elsevier, vol. 83(4), pages 324-342, April.
    4. Koussa, Mustapha & Saheb-Koussa, Djohra & Hadji, Seddik, 2017. "Experimental investigation of simple solar radiation spectral model performances under a Mediterranean Algerian's climate," Energy, Elsevier, vol. 120(C), pages 751-773.

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