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Modeling thermal asymmetries in double slope solar stills

Author

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  • Rubio, Eduardo
  • Fernández, José L.
  • Porta-Gándara, Miguel A.

Abstract

Solar distillation literature reports a generalized use of stills with single and double slope condensing covers, where modeling equations describe a solution approach that considers the condenser as a single element. The solution for a double slope still analysis is generally forced to the case of one with a single flat condensing cover. This paper proposes a new lumped parameters mathematical model to study the asymmetries that arise in the temperature and distillate yield in double slope solar stills. The condenser is studied as a two-element system and non-simplified equations for heat transfer and optical transmission characteristics are used. The model is tested for the case with the strongest thermal differences and validated with experimental data. Overall results show a good correlation between predictions and experimentation.

Suggested Citation

  • Rubio, Eduardo & Fernández, José L. & Porta-Gándara, Miguel A., 2004. "Modeling thermal asymmetries in double slope solar stills," Renewable Energy, Elsevier, vol. 29(6), pages 895-906.
    • Handle: RePEc:eee:renene:v:29:y:2004:i:6:p:895-906
    DOI: 10.1016/j.renene.2003.11.001
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    References listed on IDEAS

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    1. Rubio-Cerda, Eduardo & Porta-Gándara, Miguel A. & Fernández-Zayas, José L., 2002. "Thermal performance of the condensing covers in a triangular solar still," Renewable Energy, Elsevier, vol. 27(2), pages 301-308.
    2. Lawrence, S.A. & Tiwari, G.N., 1991. "Performance of a greenhouse cum solar still for the climatic condition of Port Moresby," Renewable Energy, Elsevier, vol. 1(2), pages 249-255.
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    Cited by:

    1. Elango, C. & Gunasekaran, N. & Sampathkumar, K., 2015. "Thermal models of solar still—A comprehensive review," Renewable and Sustainable Energy Reviews, Elsevier, vol. 47(C), pages 856-911.
    2. Hossein Yousefi & Mohamad Aramesh & Bahman Shabani, 2021. "Design Parameters of a Double-Slope Solar Still: Modelling, Sensitivity Analysis, and Optimization," Energies, MDPI, vol. 14(2), pages 1-23, January.
    3. Sharshir, S.W. & Elsheikh, A.H. & Peng, Guilong & Yang, Nuo & El-Samadony, M.O.A. & Kabeel, A.E., 2017. "Thermal performance and exergy analysis of solar stills – A review," Renewable and Sustainable Energy Reviews, Elsevier, vol. 73(C), pages 521-544.
    4. Kaviti, Ajay Kumar & Yadav, Akhilesh & Shukla, Amit, 2016. "Inclined solar still designs: A review," Renewable and Sustainable Energy Reviews, Elsevier, vol. 54(C), pages 429-451.

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