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<p>The escalating global water scarcity crisis necessitates innovative solutions for freshwater production. This study introduces a novel multistage cylindrical solar still (MSCYSS) with generated turbulence to enhance desalination efficiency. The MSCYSS incorporates four design modifications: vertically stacked absorber chambers, perforated tubes for water turbulence, a parabolic solar concentrator (PSC), and an exterior condenser with forced vapor extraction. Comparative experiments were conducted between the conventional cylindrical solar still (CYSS) and a MSCYSS under same operating conditions. Experimental finding demonstrated significant productivity improvements: The MSCYSS achieved a 70% yield increase over the CYSS, while the integration of turbulence and PSC further elevated performance by 105% and 149%, respectively. The final optimized system (MSCYSS-GT+PSC+EC) exhibited a 201% productivity enhancement, yielding 17,450 compared to 5800&#xa0;mL&#xa0;m<sup>−2</sup>&#xa0;day<sup>−1</sup> for the CYSS. Thermal efficiency improved from 50% (CYSS) to 74% (MSCYSS-GT+PSC+EC). An economic analysis revealed a 43.1% reduction in desalination costs, with the optimized system achieving a levelized water cost of $0.0091&#xa0;L<sup>−1</sup>. These determinations emphasize the potential of the MSCYSS as a sustainable and economically viable solution for addressing freshwater shortages.</p>

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Multistage cylindrical distiller with generated turbulence and parabolic solar concentrator for water desalination

  • 期刊论文

  • 发表日期：

    2026年7月8日

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  • Wissam H. Alawee,
  • Nawras Ali Majeed,
  • Ali Basem,
  • Hayder A. Dhahad,
  • Shaaban M. Shaaban,
  • Z. M. Omara,
  • Fadl A. Essa,
  • S. M. Elkholy

摘要

The escalating global water scarcity crisis necessitates innovative solutions for freshwater production. This study introduces a novel multistage cylindrical solar still (MSCYSS) with generated turbulence to enhance desalination efficiency. The MSCYSS incorporates four design modifications: vertically stacked absorber chambers, perforated tubes for water turbulence, a parabolic solar concentrator (PSC), and an exterior condenser with forced vapor extraction. Comparative experiments were conducted between the conventional cylindrical solar still (CYSS) and a MSCYSS under same operating conditions. Experimental finding demonstrated significant productivity improvements: The MSCYSS achieved a 70% yield increase over the CYSS, while the integration of turbulence and PSC further elevated performance by 105% and 149%, respectively. The final optimized system (MSCYSS-GT+PSC+EC) exhibited a 201% productivity enhancement, yielding 17,450 compared to 5800 mL m−2 day−1 for the CYSS. Thermal efficiency improved from 50% (CYSS) to 74% (MSCYSS-GT+PSC+EC). An economic analysis revealed a 43.1% reduction in desalination costs, with the optimized system achieving a levelized water cost of $0.0091 L−1. These determinations emphasize the potential of the MSCYSS as a sustainable and economically viable solution for addressing freshwater shortages.