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Improving the performance of solar desalination systems

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  • Abdel-Rehim, Zeinab S.
  • Lasheen, Ashraf

Abstract

Two modifications for solar desalination systems are presented. The first modification, using a packed layer that installed in the bottom of the basin to increase the efficiency of the still. A packed layer is formed from glass balls which is considered as simple thermal storage system. The second modification, using rotating shaft installed close to the basin water surface. The target of using the rotating shaft to break the boundary layer of the basin water surface, thus increasing the water vaporization and condensation, the performance of the present solar desalination system may also be increased. The numerical analysis presented the equations of the direct coupling of the selected PV-solar panel, DC-motor and inverter for small PV-system. The characteristics of PV array and the DC-motor are presented for the specific PV–DC power. The performance of the two modified solar stills and the conventional one is compared. Three experiments were carried out using the climate conditions of Cairo site, Egypt. Transient temperatures of the two modified solar stills and the conventional one are measured from sunrise to sunset with the same operating parameters. The energy equations that governed the present solar desalination system are presented. Energy absorbed by glass cover, basin water, packed layer and the required power of the rotating shaft are calculated to obtain the water productivity and efficiency of the present systems. The results show that the two modifications enhanced the performance of the solar desalination system. The efficiency of the modified solar desalination system using packed layer thermal energy storage was increased by 5% at May, 6% at June, and 7.5% at July, while it was increased by 2.5% at May, 5% at June, and 5.5% at July for the modified one using rotating shaft and PV-system.

Suggested Citation

  • Abdel-Rehim, Zeinab S. & Lasheen, Ashraf, 2005. "Improving the performance of solar desalination systems," Renewable Energy, Elsevier, vol. 30(13), pages 1955-1971.
    • Handle: RePEc:eee:renene:v:30:y:2005:i:13:p:1955-1971
    DOI: 10.1016/j.renene.2005.01.008
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    References listed on IDEAS

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    1. Benjemaa, F & Houcine, I & Chahbani, M.H, 1999. "Potential of renewable energy development for water desalination in Tunisia," Renewable Energy, Elsevier, vol. 18(3), pages 331-347.
    2. Tiris, Ç. & Tiris, M. & Türe, İ.E., 1996. "Improvement of basin type solar still performance," Renewable Energy, Elsevier, vol. 9(1), pages 758-761.
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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. Dsilva Winfred Rufuss, D. & Arulvel, S. & Anil Kumar, V. & Davies, P.A. & Arunkumar, T. & Sathyamurthy, Ravishankar & Kabeel, A.E. & Anand Vishwanath, M. & Sai Charan Reddy, D. & Dutta, Amandeep & Agr, 2022. "Combined effects of composite thermal energy storage and magnetic field to enhance productivity in solar desalination," Renewable Energy, Elsevier, vol. 181(C), pages 219-234.
    3. Ali Riahi & Nor Azazi Zakaria & Mohamed Hasnain Isa & Khamaruzaman Wan Yusof & Balbir Singh Mahinder Singh & Zahiraniza Mustaffa & Husna Takaijudin, 2019. "Performance investigation of a solar still having polythene film cover and black painted stainless steel basin integrated with a photovoltaic module–direct current heater," Energy & Environment, , vol. 30(8), pages 1521-1535, December.
    4. Kalidasa Murugavel, K. & Sivakumar, S. & Riaz Ahamed, J. & Chockalingam, Kn.K.S.K. & Srithar, K., 2010. "Single basin double slope solar still with minimum basin depth and energy storing materials," Applied Energy, Elsevier, vol. 87(2), pages 514-523, February.
    5. Prakash, P. & Velmurugan, V., 2015. "Parameters influencing the productivity of solar stills – A review," Renewable and Sustainable Energy Reviews, Elsevier, vol. 49(C), pages 585-609.
    6. Sahoo, B.B. & Sahoo, N. & Mahanta, P. & Borbora, L. & Kalita, P. & Saha, U.K., 2008. "Performance assessment of a solar still using blackened surface and thermocol insulation," Renewable Energy, Elsevier, vol. 33(7), pages 1703-1708.
    7. Obai Younis & Ahmed Kadhim Hussein & Mohammed El Hadi Attia & Hakim S. Sultan Aljibori & Lioua Kolsi & Hussein Togun & Bagh Ali & Aissa Abderrahmane & Khanyaluck Subkrajang & Anuwat Jirawattanapanit, 2022. "Comprehensive Review on Solar Stills—Latest Developments and Overview," Sustainability, MDPI, vol. 14(16), pages 1-59, August.
    8. Mohamed, A.S.A. & Shahdy, Abanob G. & Mohamed, Hany A. & Ahmed, M. Salem, 2023. "A comprehensive review of the vacuum solar still systems," Renewable and Sustainable Energy Reviews, Elsevier, vol. 184(C).
    9. Dsilva Winfred Rufuss, D. & Iniyan, S. & Suganthi, L. & Davies, P.A., 2016. "Solar stills: A comprehensive review of designs, performance and material advances," Renewable and Sustainable Energy Reviews, Elsevier, vol. 63(C), pages 464-496.
    10. Madhlopa, A. & Johnstone, C., 2009. "Numerical study of a passive solar still with separate condenser," Renewable Energy, Elsevier, vol. 34(7), pages 1668-1677.
    11. Mohd Fazly Yusof & Mohd Remy Rozainy Mohd Arif Zainol & Andrei Victor Sandu & Ali Riahi & Nor Azazi Zakaria & Syafiq Shaharuddin & Mohd Sharizal Abdul Aziz & Norazian Mohamed Noor & Petrica Vizureanu , 2022. "Clean Water Production Enhancement through the Integration of Small-Scale Solar Stills with Solar Dish Concentrators (SDCs)—A Review," Sustainability, MDPI, vol. 14(9), pages 1-27, April.
    12. Kabeel, A.E. & Abdelgaied, Mohamed & Eisa, Amr, 2019. "Effect of graphite mass concentrations in a mixture of graphite nanoparticles and paraffin wax as hybrid storage materials on performances of solar still," Renewable Energy, Elsevier, vol. 132(C), pages 119-128.
    13. Vishwanath Kumar, P. & Kumar, Anil & Prakash, Om & Kaviti, Ajay Kumar, 2015. "Solar stills system design: A review," Renewable and Sustainable Energy Reviews, Elsevier, vol. 51(C), pages 153-181.
    14. Sivakumar, V. & Ganapathy Sundaram, E., 2013. "Improvement techniques of solar still efficiency: A review," Renewable and Sustainable Energy Reviews, Elsevier, vol. 28(C), pages 246-264.

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