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Abstract <p>Solar desalination is one of the economic methods to reduce water scarcity. In the present study, two solar stills are compared in the same climatic conditions, one is a conventional solar still (CSS) and the other is a modified solar still with atomizer (MSSA). Both the stills were fabricated using galvanized iron of thickness 0.5 mm with the same basin area of 0.25 m<sup>2</sup>. Testing under the same ambient conditions, the maximum cumulative yield of CSS is 1440 mL/m<sup>2</sup>/d and that of MSSA is 1860 mL/m<sup>2</sup>/d. Six atomizers used in the MSSA converted the basin water into fumes, leading to an increase in evaporation rate. This became the main reason for obtaining a higher yield. The energy efficiency of CSS and MSSA are 11.95% and 15.48%, respectively. Similarly, the exergy efficiency of CSS and MSSA are 0.65% and 1.02%, respectively. An environmental and economic analysis revealed that the MSSA contributes more to Sustainable Development Goal 6 than the CSS. The total carbon emission mitigation of MSSA is calculated to be 0.87 tonnes more than that of CSS. The total carbon credit earned by MSSA is 30.21%, relatively higher than the CSS. Energy payback time calculated for MSSA is 0.22 years less than the CSS.</p> Graphical abstract <p></p>

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Investigation on the performance of a single basin single slope solar still with atomizers for improved evaporation

  • 期刊论文

  • 发表日期：

    2026年5月26日

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  • R. Arun Kumar,
  • V. Sivakumar,
  • N. Gurusankar

摘要

Abstract

Solar desalination is one of the economic methods to reduce water scarcity. In the present study, two solar stills are compared in the same climatic conditions, one is a conventional solar still (CSS) and the other is a modified solar still with atomizer (MSSA). Both the stills were fabricated using galvanized iron of thickness 0.5 mm with the same basin area of 0.25 m2. Testing under the same ambient conditions, the maximum cumulative yield of CSS is 1440 mL/m2/d and that of MSSA is 1860 mL/m2/d. Six atomizers used in the MSSA converted the basin water into fumes, leading to an increase in evaporation rate. This became the main reason for obtaining a higher yield. The energy efficiency of CSS and MSSA are 11.95% and 15.48%, respectively. Similarly, the exergy efficiency of CSS and MSSA are 0.65% and 1.02%, respectively. An environmental and economic analysis revealed that the MSSA contributes more to Sustainable Development Goal 6 than the CSS. The total carbon emission mitigation of MSSA is calculated to be 0.87 tonnes more than that of CSS. The total carbon credit earned by MSSA is 30.21%, relatively higher than the CSS. Energy payback time calculated for MSSA is 0.22 years less than the CSS.

Graphical abstract