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Development of a tube-type solar still equipped with heat accumulation for irrigation

Author

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  • Murase, Kazuo
  • Yamagishi, Yusuke
  • Iwashita, Yusuke
  • Sugino, Keita

Abstract

A tube-type solar still is found to be suitable for use in desert irrigation. The effectiveness of a heat accumulator with regard to distillate productivity is experimentally and numerically verified. The heat accumulator consists of tube bundles immersed in wax in order to utilize the latent heat of wax. The dynamic response to stepwise variation of irradiative intensity verified the contribution of wax to an increase of productivity only when the phase change of wax occurred. The effective distillate productivity was found to be 294.3g/m2 during the cyclic stepwise change of irradiative intensity, from 200 to 600W/m2 and back. Velocity vectors driven by natural convection and temperature contours estimated by numerical simulation verified the effectiveness of the heat accumulator especially after peak solar intensity. The latent heat of wax effectively contributed to a 15% increase in total distillate productivity per day. The still can feasibly meet irrigation water supply demands above an irrigative threshold of 17MJ/m2d.

Suggested Citation

  • Murase, Kazuo & Yamagishi, Yusuke & Iwashita, Yusuke & Sugino, Keita, 2008. "Development of a tube-type solar still equipped with heat accumulation for irrigation," Energy, Elsevier, vol. 33(11), pages 1711-1718.
    • Handle: RePEc:eee:energy:v:33:y:2008:i:11:p:1711-1718
    DOI: 10.1016/j.energy.2008.05.013
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    Cited by:

    1. Kianifar, Ali & Zeinali Heris, Saeed & Mahian, Omid, 2012. "Exergy and economic analysis of a pyramid-shaped solar water purification system: Active and passive cases," Energy, Elsevier, vol. 38(1), pages 31-36.
    2. 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.
    3. Mahkamov, Khamid & Orda, Eugene & Belgasim, Basim & Makhkamova, Irina, 2015. "A novel small dynamic solar thermal desalination plant with a fluid piston converter," Applied Energy, Elsevier, vol. 156(C), pages 715-726.
    4. Ibrahim, Ayman G.M. & Allam, Elsayed E. & Elshamarka, Salman E., 2015. "A modified basin type solar still: Experimental performance and economic study," Energy, Elsevier, vol. 93(P1), pages 335-342.

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