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Thermal-electrical, high efficiency solar stills

Author

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  • Nijegorodov, Nikolai
  • Jain, Pushpendra K.
  • Carlsson, Stig

Abstract

The paper describes two solar thermal-electrical methods to purify water by distillation. In the first method air saturated with water vapour is removed from a basin type still by using a low power exhaust fan, and is passed through a condenser where the latent heat of water vapour is used to pre-heat the mineralised water for the basin. This also results in lower temperature for the glazing and a faster rate of evaporation from the basin. The net effect in an increased thermal efficiency of the still, more than twice the thermal efficiency of the conventional still. In the second design a concentrator-collector is used to boil water in the absorber tube. A low power vacuum pump is employed to lower the boiling temperature of water by about 10°C. The yield of distillate from the still is nearly doubled.

Suggested Citation

  • Nijegorodov, Nikolai & Jain, Pushpendra K. & Carlsson, Stig, 1994. "Thermal-electrical, high efficiency solar stills," Renewable Energy, Elsevier, vol. 4(1), pages 123-127.
    • Handle: RePEc:eee:renene:v:4:y:1994:i:1:p:123-127
    DOI: 10.1016/0960-1481(94)90074-4
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    Citations

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    Cited by:

    1. Kabeel, A.E. & Omara, Z.M. & Essa, F.A. & Abdullah, A.S., 2016. "Solar still with condenser – A detailed review," Renewable and Sustainable Energy Reviews, Elsevier, vol. 59(C), pages 839-857.
    2. Haddad, O.M. & Al-Nimr, M.A. & Maqableh, A., 2000. "Enhanced solar still performance using a radiative cooling system," Renewable Energy, Elsevier, vol. 21(3), pages 459-469.
    3. He Fu & Min Dai & Hanwen Song & Xiaoting Hou & Fahid Riaz & Shuai Li & Ke Yang & Imran Ali & Changsheng Peng & Muhammad Sultan, 2021. "Updates on Evaporation and Condensation Methods for the Performance Improvement of Solar Stills," Energies, MDPI, vol. 14(21), pages 1-26, October.
    4. 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.
    5. Djamal Eddine Benhadji Serradj & Timothy Anderson & Roy Nates, 2022. "The Effect of Geometry on the Yield of Fresh Water from Single Slope Solar Stills," Energies, MDPI, vol. 15(19), pages 1-18, October.
    6. Syed Noman Danish & Abdelrahman El-Leathy & Mohanad Alata & Hany Al-Ansary, 2019. "Enhancing Solar Still Performance Using Vacuum Pump and Geothermal Energy," Energies, MDPI, vol. 12(3), pages 1-13, February.

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