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Experimental and Theoretical Investigations of a Modified Single-Slope Solar Still with an External Solar Water Heater

Author

Listed:
  • Naseer T. Alwan

    (Department of Nuclear and Renewable Energy, Ural Federal University Named after the First President of Russia Boris Yeltsin, 620002 Ekaterinburg, Russia
    Power Mechanics Department, Kirkuk Technical College, Northern Technical University, Kirkuk 36001, Iraq)

  • Sergey E. Shcheklein

    (Department of Nuclear and Renewable Energy, Ural Federal University Named after the First President of Russia Boris Yeltsin, 620002 Ekaterinburg, Russia)

  • Obed Majeed Ali

    (Renewable Energy Research Unit, Northern Technical University, Kirkuk 36001, Iraq)

  • Milia H. Majeed

    (Department of Nuclear and Renewable Energy, Ural Federal University Named after the First President of Russia Boris Yeltsin, 620002 Ekaterinburg, Russia)

  • Ephraim Bonah Agyekum

    (Department of Nuclear and Renewable Energy, Ural Federal University Named after the First President of Russia Boris Yeltsin, 620002 Ekaterinburg, Russia)

Abstract

One of the key impediments to the wide utilization of solar water desalination systems is limited production. Hence, this study aims at increasing the thermal performance of a single-slope solar still by increasing the surface area of evaporation and absorption exposed to sunlight. A hollow rotating cylinder was installed inside the still structure; this modified system was then joined with an outside solar water heater for productivity improvement. The obtained results show that a 0.5 rpm rotational speed ensured that the cylinder’s surface was kept wet. A mathematical model has been formulated using the finite difference method and the Fortran 90 programming language to assess the thermal performance productivity of two solar stills (conventional solar still (CSS) and modified solar still (MSS)) modelled under different conditions. The experimental and theoretical results are well agreed, with an error of 6.14%. The obtained results show that the maximum productivity recorded in July 2019 was about 11.1 L / m 2 from the MSS and 2.8 L / m 2 from the CSS, with an improvement rate ranging between 286% and 300% during June, July, August, and September 2019. The production cost per liter of distilled water from the modified and conventional solar stills was 0.0302 USD / L and 0.0312 USD / L , respectively, which indicates a noticeable reduction in the cost of distillate water production.

Suggested Citation

  • Naseer T. Alwan & Sergey E. Shcheklein & Obed Majeed Ali & Milia H. Majeed & Ephraim Bonah Agyekum, 2021. "Experimental and Theoretical Investigations of a Modified Single-Slope Solar Still with an External Solar Water Heater," Sustainability, MDPI, vol. 13(22), pages 1-25, November.
    • Handle: RePEc:gam:jsusta:v:13:y:2021:i:22:p:12414-:d:676035
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    References listed on IDEAS

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    1. Tariq, Rasikh & Sheikh, Nadeem Ahmed & Xamán, J. & Bassam, A., 2018. "An innovative air saturator for humidification-dehumidification desalination application," Applied Energy, Elsevier, vol. 228(C), pages 789-807.
    2. Nazari, Saeed & Safarzadeh, Habibollah & Bahiraei, Mehdi, 2019. "Experimental and analytical investigations of productivity, energy and exergy efficiency of a single slope solar still enhanced with thermoelectric channel and nanofluid," Renewable Energy, Elsevier, vol. 135(C), pages 729-744.
    3. Muhammad-Sukki, Firdaus & Munir, Abu Bakar & Ramirez-Iniguez, Roberto & Abu-Bakar, Siti Hawa & Mohd Yasin, Siti Hajar & McMeekin, Scott G. & Stewart, Brian G., 2012. "Solar photovoltaic in Malaysia: The way forward," Renewable and Sustainable Energy Reviews, Elsevier, vol. 16(7), pages 5232-5244.
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    Cited by:

    1. Fatih Selimefendigil & Ceylin Şirin & Hakan F. Öztop, 2022. "Experimental Performance Analysis of a Solar Desalination System Modified with Natural Dolomite Powder Integrated Latent Heat Thermal Storage Unit," Sustainability, MDPI, vol. 14(5), pages 1-15, February.
    2. Anwur Alenezi & Yousef Alabaiadly, 2023. "A Comprehensive Review of Performance Augmentation of Solar Stills Using Common Non-Metallic Nanofluids," Sustainability, MDPI, vol. 15(13), pages 1-19, June.

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