A comprehensive experimental, numerical, economic, and environmental evaluation of an innovative solar still design for the desalination of Najaf seawater

Yasir Fayez Youssif, Mohammed Alfahham, Hassanain Ghani Hameed

Abstract


Solar stills are generally characterized by their low production cost and ease of installation and operation. Its low productivity is the deciding factor in its limited widespread use. In this study, a monoclinic solar still with a polygonal absorber plate and an arc-shaped back side(PASS) was fabricated and tested. The new design makes the most of the curved back side by installing a wall reflector, which maximizes the concentrated solar radiation on the base. We compared the performance of the presented model (PASS) with the conventional one (CSS). Both models are made from the same raw materials and have the same absorbent plate area. The results showed that the new model increased yield by approximately 175.3% compared to the traditional model, resulting in a 68.21% reduction in the cost of producing one liter and a 265.43% reduction in carbon emissions treatment costs.

 

Received: 09 July 2025

Accepted: 01 September 2025

Published: 21 September 2025


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DOI: https://dx.doi.org/10.21622/resd.2025.11.2.1449

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Copyright (c) 2025 Yasir Fayez Youssif, Mohammed Alfahham, Hassanain Ghani Hameed

Renewable Energy and Sustainable Development

E-ISSN: 2356-8569

P-ISSN: 2356-8518

 

Published by:

Academy Publishing Center (APC)

Arab Academy for Science, Technology and Maritime Transport (AASTMT)

Alexandria, Egypt

resd@aast.edu