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<p>Thermal performance of the single-basin solar still (SBSS) is investigated. The still integrated with aluminum cans filled with paraffin wax as a phase change material (PCM) is experimentally investigated. A computer simulation using Pascal language under Tanta (Latitude 30° 47′ N, Egypt) weather conditions is performed. Lauric acid, palmitic acid, salt hydrate, stearic acid, paraffin wax, paraffin wax + aluminum powder, and sodium acetate trihydrate (NaOAc.3H<sub>2</sub>O salt hydrate) have been considered for the analysis. The results showed that sodium acetate trihydrate gives the best performance of still. The investigated still with 9.0&#xa0;kg of paraffin wax as a storage material has a large potential for producing fresh water needed for domestic and some industrial applications. The daily productivity of the system was found to be 6.797 (kg m<sup>−2</sup>&#xa0;day) when the still is used with 9.0&#xa0;kg of sodium acetate trihydrate compared to 1.966 (kg m<sup>−2</sup>&#xa0;day) without PCM. Furthermore, the instantaneous energy (<i>η</i><sub>i</sub>) and exergy (<i>η</i><sub>ex</sub>) efficiencies achieve their maximum values of 86.0 and 6.07% when the SBSS is used with sodium acetate trihydrate as a PCM, respectively, compared with 58.0 and 4.49% of the <i>η</i><sub>i</sub> and <i>η</i><sub>ex</sub> for the SBSS without a PCM. The cost analysis indicated that the cost of producing one liter of fresh water is found to be 0.028 and 0.021$ for the SBSS with and without paraffin wax as a storage material.</p>

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Mathematical modeling, energy, exergy, and economic analysis of a single-basin solar still with phase change storage materials

  • 期刊论文

  • 出版模式：

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  • 发表日期：

    2026年6月29日

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  • A. A. El-Sebaii,
  • M. M. Hegazy,
  • A. M. Khallaf

摘要

Thermal performance of the single-basin solar still (SBSS) is investigated. The still integrated with aluminum cans filled with paraffin wax as a phase change material (PCM) is experimentally investigated. A computer simulation using Pascal language under Tanta (Latitude 30° 47′ N, Egypt) weather conditions is performed. Lauric acid, palmitic acid, salt hydrate, stearic acid, paraffin wax, paraffin wax + aluminum powder, and sodium acetate trihydrate (NaOAc.3H2O salt hydrate) have been considered for the analysis. The results showed that sodium acetate trihydrate gives the best performance of still. The investigated still with 9.0 kg of paraffin wax as a storage material has a large potential for producing fresh water needed for domestic and some industrial applications. The daily productivity of the system was found to be 6.797 (kg m−2 day) when the still is used with 9.0 kg of sodium acetate trihydrate compared to 1.966 (kg m−2 day) without PCM. Furthermore, the instantaneous energy (ηi) and exergy (ηex) efficiencies achieve their maximum values of 86.0 and 6.07% when the SBSS is used with sodium acetate trihydrate as a PCM, respectively, compared with 58.0 and 4.49% of the ηi and ηex for the SBSS without a PCM. The cost analysis indicated that the cost of producing one liter of fresh water is found to be 0.028 and 0.021$ for the SBSS with and without paraffin wax as a storage material.