article · Desalination and Water Treatment
Conical solar stills offer an efficient way to purify and desalinate water using solar energy. A review of research in this field demonstrates that conical designs achieve higher productivity, efficiency, and cost-effectiveness than traditional solar stills. These performance gains stem from distinctive design attributes, including the conical shape itself, internal and external reflectors, and the integration of phase change materials. Furthermore, refining specific geometric and operational parameters, particularly inclination angles and aspect ratios, ensures maximum solar energy capture and boosts freshwater yield. By synthesising current methodologies, identifying existing research gaps, and outlining areas for further design optimisation, the work provides foundational guidance to assist in developing enduring and effective solar desalination systems aimed at tackling global water scarcity.
Water scarcity remains a critical global challenge, particularly in areas lacking modern infrastructure. Solar stills provide an accessible method to purify and desalinate water using renewable energy. Identifying design modifications, such as conical geometry, reflectors, and heat-storing materials, reveals practical ways to boost water output and make solar-powered purification more practical for communities that need it most.
The insights apply to the development of decentralised solar water purification and desalination units for communities in water-stressed, off-grid settings. Because this work constitutes an analysis and review of existing design optimisation research and knowledge gaps, it sits at an early research stage, offering design principles that hardware developers and engineers can apply to prototype and test improved still configurations.
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This paper provides a comprehensive examination of conical solar stills, with a specific emphasis on their performance, design considerations, and different factors that can improve their efficiency. Solar stills are a highly efficient method of utilizing solar energy to purify and desalinate water. The conical solar still, specifically, displays distinctive attributes and presents opportunities for enhancing water output. This study provides a thorough analysis of the current research on conical solar stills, emphasizing the significant discoveries, research approaches, and progress made in this field. Moreover, it discerns deficiencies in knowledge, puts out potential study avenues, and recommends places for additional improvements. The results of this analysis will aid in the creation of effective and enduring solar still blueprints to tackle the worldwide issue of water scarcity. This research is innovative in its full examination of design optimization methodologies and exploration of parameters that can improve conical solar still water production. The major findings highlight the significant advantages of conical solar stills in terms of efficiency, productivity, and cost-effectiveness. Their unique design features, such as conical shapes, internal and external reflectors, and phase change materials, significantly enhance their performance compared to traditional solar stills. The optimization of design parameters, including inclination angles and aspect ratios, further boosts their productivity, ensuring maximum utilization of solar energy.
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DOI: 10.1016/j.dwt.2024.100642
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