Abstract
In this experimental work, the effect of cotton bags filled with phosphate on solar distillery performance has been investigated. In this study, 25 phosphate bags are evenly distributed (5 × 5) with a length equal to 50 cm in a wooden box called the modified solar still (MSS). This system was compared with the conventional solar still (CSS) in the same climatic conditions. Phosphate bags are placed vertically to increase the energy storage capacity, and the water’s surface area since the capillaries inside the phosphate bags play an important role in increasing the energy storage capacity. Experiments were conducted at El Oued University in Algeria during April and May 2020, with 1 cm and 2 cm of saltwater depth. The cumulative yield of 5.27 and 4.87 kg was produced from the MSS at 1 cm and 2 cm of saltwater, respectively, while the cumulative yield of the CSS was 3.8 kg. The MSS’s overall efficiency at 1 cm and 2 cm of saltwater was enhanced by 28 and 22.5%, respectively compared with the CSS. The presence of calcium and copper in phosphate stores the heat energy during morning and afternoon, and stored heat energy was released during evening. Finally, it can be concluded that increasing phosphate bags significantly enhances the productivity in solar distillation, increasing efficiency and productivity.
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Data availability
All data are given in the manuscript.
Abbreviations
- CSS:
-
Conventional solar still
- MSS-1:
-
Modified solar still with 1 cm basin water
- MSS-2:
-
Modified solar still with 2 cm basin water
- SHESM:
-
Sensible heat energy storage materials
- ISS:
-
Inclined solar still
- I(t):
-
Solar irradiation
- Ta:
-
Atmosphere temperature
- T s.w :
-
Saline water temperature
- T c.c :
-
Collector cover temperature
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Mohammed El Hadi Attia: investigation, project administration, and writing-introduction part. Zied Driss: project administration and writing-review & editing. Abd Elnaby Kabeel: formal analysis and project administration. Karthick Alagar: data curation and software. Muthu Manokar A: writing-results and discussion part, data curation, writing-review & editing. Ravishankar Sathyamurthy: writing-results and discussion part, data curation, software, and writing-review & editing.
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Highlights
• Three solar stills (conventional solar still and modified solar stills with phosphate bags) were fabricated.
• Research was performed at Renewable Energy Laboratory in El Oued University, Algeria.
• Sustainable distilled water production from the modified solar still is higher than the conventional solar still.
• The yield and thermal efficiency of the conventional solar still was 3.8 kg and 31%, repectively.
• The yield and thermal efficiency of the modified solar still was 5.27 and 43%, repectively.
• The thermal efficiency of the modified solar still was improved by 28% higher as compared with the conventional solar still.
Appendix 1
Appendix 1
The EHTC from saline water to glass cover is calculated by Tiwari and Lawrence (1991) and (Tiwari et al. 2009),
Convective heat transfer coefficient from the saline water to the glass cover is calculated by Tiwari and Lawrence (1991) and Tiwari et al. (2009),
Partial vapor pressure at the Tb.w is calculated by Tiwari and Lawrence (1991) and Tiwari et al. (2009),
Partial vapor pressure at the glass surface is calculated by Tiwari and Lawrence (1991) and Tiwari et al. (2009),
The thermal efficiency of the CSS and MSS is estimated as Tiwari and Lawrence (1991) and Tiwari et al. (2009),
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Attia, M.E.H., Driss, Z., Kabeel, A.E. et al. Phosphate bags as energy storage materials for enhancement of solar still performance. Environ Sci Pollut Res 28, 21540–21552 (2021). https://doi.org/10.1007/s11356-020-12018-x
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DOI: https://doi.org/10.1007/s11356-020-12018-x