article · Sustainability
A study investigated methods to enhance the performance of conventional pyramidal solar stills. Researchers integrated two types of fins, hollow cylindrical perforated fins (HCPF) and inclined perforated rectangular fins (IPRF), into the base of the stills. They also explored the use of TiO2 and graphene nanocomposites. Experimental results showed that both fin designs significantly increased distillate production compared to conventional stills. The inclined perforated rectangular fins proved most effective, improving productivity by 55.9%. Further, combining these fins with nanocomposites boosted daily distillate production by 82.1%.
Improving solar still efficiency is crucial for providing clean drinking water in regions with limited access to conventional purification methods. This research offers practical design modifications that can significantly increase the output of solar-powered water purification systems, making them more viable for communities.
This applied research demonstrates improved designs for solar water purification devices. The findings could lead to the development of more efficient pyramidal solar stills for producing potable water, particularly in off-grid or remote communities. These enhanced systems could be adopted by households, small businesses, or humanitarian organisations seeking sustainable and cost-effective water solutions. The technology appears to be at an applied research stage, showing significant performance gains in experimental settings.
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A practical study was conducted to improve the performance of conventional pyramidal solar stills (CPSS) using two types of fins with differing geometries, as well as nanocomposites of TiO2 and graphene. The first fin was hollow, cylindrical, and perforated (HCPF), whereas the second fin was an inclined perforated rectangular fin (IPRF). The fins were integrated with the base of a solar still to evaluate their performance in comparison with a CPSS. The obtained experimental results demonstrated that the pyramidal solar still with hollow perforated cylindrical fins (PSS-HCPF) and the pyramidal solar still with inclined perforated rectangular fins (PSS-IPRF) produced more distillate than the PSS-HCPF and CPSS under all examined conditions. The daily productivities of the CPSS, PSS-HCPF, and PSS-IPRF were 3718, 4840, and 5750 mL/m2, respectively, with the PSS-HCPF and PSS-IPRF improving the productivity by 31.3% and 55.9%, respectively, compared to that of the CPSS. In addition, using nanocomposites with PSS-IPRF improved the daily distillate production by 82.1%.
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DOI: 10.3390/su142114116
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