Salinity-gradient solar pond: History and progress review

Khawla Sleiman, Stefan Van Vaerenbergh, Tayssir Hamieh

Article ID: 2568
Vol 6, Issue 2, 2023

VIEWS - 210 (Abstract) 71 (PDF)


A salinity gradient solar pond (SGSP) is a large and deep artificial basin of layered brine, which collects and stores-simultaneously-solar energy for use in various applications. Experimental and theoretical studies have been launched to understand the thermal behavior of SGSPs, under different operating conditions. This article then traces the history of SGSPs, from their natural discovery to their current artificial applications and the progress of studies and research, according to their chronological sequence, in terms of determining their physical and dynamic aspects, their operation, management and maintenance. It has extensively covered the theoretical and experimental studies, as well as the direct and laboratory applications of this technology, especially the most famous and influential in this field, classified according to the aspect covered by the study, with a comparison between the different results obtained. In addition, it highlighted the latest methods to improve the performance of an SGSP and facilitate its operation, such as the use of a magnetic field and the adoption of remote data acquisition, in the aim of expanding research and enhancing the benefit of this technology.


Solar pond; thermal energy; salt gradient, storage zone; non-convective zone; innovative technology

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