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Productivity Augmentation of Solar Stills by Coupled Copper Tubes and Parabolic Fins

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  • Ajay Kumar Kaviti

    (Centre for Solar Energy Materials, VNRVJIET, Hyderabad 500090, India
    Department of Mechanical Engineering, VNRVJIET, Hyderabad 500090, India)

  • Magadapalli Teja

    (Department of Mechanical Engineering, VNRVJIET, Hyderabad 500090, India)

  • Oruganti Madhukar

    (Department of Mechanical Engineering, VNRVJIET, Hyderabad 500090, India)

  • Polaboina Bhanu Teja

    (Department of Mechanical Engineering, VNRVJIET, Hyderabad 500090, India)

  • Vakapalli Aashish

    (Department of Mechanical Engineering, VNRVJIET, Hyderabad 500090, India)

  • Gembali Srinivasa Gupta

    (Department of Mechanical Engineering, VNRVJIET, Hyderabad 500090, India)

  • Akkala Sivaram

    (Centre for Solar Energy Materials, VNRVJIET, Hyderabad 500090, India
    Department of Mechanical Engineering, VNRVJIET, Hyderabad 500090, India)

  • Vineet Singh Sikarwar

    (Institute of Plasma Physics of the Czech Academy of Sciences, Za Slovankou 1782/3, 18200 Prague, Czech Republic
    Department of Power Engineering, University of Chemistry and Technology, Technická 5, 16628 Prague, Czech Republic)

Abstract

A solar still is an eco-friendly device that makes use of ample solar energy for the purification of water. The main objective of this research is to increase the yield output of a double-slope solar still (DSSS) by coupling the basin liner with copper tubes and parabolic fins. In this work, the experiments were supervised for nine days with three different cases. For these experiments, copper tubes with thickness of 2 mm, outer diameter of 32 mm, inner diameter of 28 mm, and parabolic fins with 30 mm diameter and 50 mm height were considered. In the first case, non-coated copper tubes (NCCTs) were used, in the second case, coated copper tubes (CCTs) were employed, and in the last case, coated copper tubes with a combination of parabolic fins (CCTPFs) were used. The MSS (case-III) demonstrated a substantial yearly productivity enhancement of 57.79%, establishing its superiority in terms of output because of its higher daily distillate yield of 1215 mL/day in contrast to CSS. When compared, case III—CCTPF—performed better than case II—CCT—by 35.75%. The CSS and MSS both contributed to a decrease in the pH of the saline water, which went from 8.18 to 7.64 and 7.23, respectively. In comparison to the MSS and CSS, which had 0.428 mg/L and 0.569 mg/L of fluoride ions, respectively, brine water had a fluoride ion level of 0.734 mg/L. Total dissolved solids (TDS) concentration before desalination was 440 ppm and it was minimized to 20 ppm with MSS and 55 ppm with CSS, respectively, post-desalination. The corresponding cost per liter (CPL) of MSS and CSS is USD 0.053 and USD 0.040, respectively.

Suggested Citation

  • Ajay Kumar Kaviti & Magadapalli Teja & Oruganti Madhukar & Polaboina Bhanu Teja & Vakapalli Aashish & Gembali Srinivasa Gupta & Akkala Sivaram & Vineet Singh Sikarwar, 2023. "Productivity Augmentation of Solar Stills by Coupled Copper Tubes and Parabolic Fins," Energies, MDPI, vol. 16(18), pages 1-14, September.
    • Handle: RePEc:gam:jeners:v:16:y:2023:i:18:p:6606-:d:1239411
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    References listed on IDEAS

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    1. 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.
    2. Ajay Kumar Kaviti & Siva Ram Akkala & Mohd Affan Ali & Pulagam Anusha & Vineet Singh Sikarwar, 2023. "Performance Improvement of Solar Desalination System Based on CeO 2 -MWCNT Hybrid Nanofluid," Sustainability, MDPI, vol. 15(5), pages 1-16, February.
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