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Prediction of mass transfer rates in solar stills

Author

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  • Kiatsiriroat, T.
  • Bhattacharya, S.C.
  • Wibulswas, P.

Abstract

We present a modification of a mass transfer theory developed by Spalding to predict mass transfer rates in solar stills of different inclinations. In previous applications to solar stills, the authors considered the mass fractions at the evaporating surface and the bulk state to evaluate the driving force for mass transfer. In this study, the mass fraction at the condensing surface on the cover is employed instead of the bulk mass fraction on the moist air in the still, since the former can be more accurately determined. Predicted results from the modified theory and results from relation of Dunkle1 are compared with experimental values. The results of the modified theory agree very well with the experimental results, whereas Dunkle's relation is accurate only in horizontal stills and stills with small inclinations.

Suggested Citation

  • Kiatsiriroat, T. & Bhattacharya, S.C. & Wibulswas, P., 1986. "Prediction of mass transfer rates in solar stills," Energy, Elsevier, vol. 11(9), pages 881-886.
    • Handle: RePEc:eee:energy:v:11:y:1986:i:9:p:881-886
    DOI: 10.1016/0360-5442(86)90007-1
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    Cited by:

    1. Dumka, Pankaj & Mishra, Dhananjay R., 2018. "Experimental investigation of modified single slope solar still integrated with earth (I) &(II):Energy and exergy analysis," Energy, Elsevier, vol. 160(C), pages 1144-1157.
    2. Panomwan Na Ayuthaya, Rattanapol & Namprakai, Pichai & Ampun, Wirut, 2013. "The thermal performance of an ethanol solar still with fin plate to increase productivity," Renewable Energy, Elsevier, vol. 54(C), pages 227-234.
    3. El-Sebaii, A.A. & El-Bialy, E., 2015. "Advanced designs of solar desalination systems: A review," Renewable and Sustainable Energy Reviews, Elsevier, vol. 49(C), pages 1198-1212.
    4. Namprakai, P. & Hirunlabh, J., 2007. "Theoretical and experimental studies of an ethanol basin solar still," Energy, Elsevier, vol. 32(12), pages 2376-2384.
    5. Namprakai, P. & Hirunlabh, J. & Kiatsiriroat, T., 1997. "Ethyl alcohol distillation in a basin solar still," Renewable Energy, Elsevier, vol. 11(2), pages 169-175.
    6. Sharon, H. & Reddy, K.S., 2015. "Performance investigation and enviro-economic analysis of active vertical solar distillation units," Energy, Elsevier, vol. 84(C), pages 794-807.
    7. Dumka, Pankaj & Mishra, Dhananjay R., 2020. "Performance evaluation of single slope solar still augmented with the ultrasonic fogger," Energy, Elsevier, vol. 190(C).

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