Performance of innovative hybrid solar desalination system powered by using heat storage materials under a vacuum condition

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Munawar Rusli, Rofiq Iqbal, Suprihanto Notodarmojo, Mindriany Syafila

2026 Journal of Ecological Engineering Vol. 27 Issue 5 Article Cited by 0 SDG 6SDG 7SDG 17 Quartile

Abstract

The fresh water crisis is a global issue that has threatened human life in recent years. In the areas with a lack fresh water resources, quality enhancement of saline water, the most abundant water resources in nature, by using the desalination process has become a promising solution to be used. According to ecologically friendly and sustainable effort, renewable energy-based desalination is one promising choice to address this issue. This research aimed to determine the performance of an innovative hybrid solar desalination system, which uses several materials that accelerate evaporation on the surface and store a heat, which is predicted to have significant potential for application in the desalination technology. The research consists of two parts of the experimental section that started with determining the optimum conditions for HSDS, which was conducted to determine the optimum feed water flow rate and the optimum initial feed water concentration, followed by the HSDS system performance study that was conducted to determine the effect of heat storage materials and cooling water flowrate in vacuum condition. The performance of the developed hybrid solar desalination system was quite high with hourly yield of 28.03 L/m2 over 5 hours, and the optimum desalination efficiency of 55.42%, which was obtained at a cooling water flowrate of 4 L/minute, and the use of black gravel. The energy supplied to the system ranged from 13,064–15,506 kJ, with an energy consumption of 9,415–9,601 kJ. Meanwhile, the energy loss within the system was 3,463–6,091 kJ, or approximately 26.51–39.28% of the energy supplied to the system. Under optimum conditions, the thermal efficiency and gain output ratio (GOR) of the HSDS were 58.7% and 1.32, respectively. © (2026), (Polskie Towarzystwo Inzynierii Ekologicznej (PTIE)). All rights reserved.

Affiliations

Doctoral Program of Environmental Engineering, Faculty of Civil and Environmental Engineering, Institut Teknologi Bandung, Jalan Ganesha No. 10, Bandung, Indonesia; Department of Chemical Engineering, Politeknik Negeri Lhokseumawe, Jl. B. Aceh-Medan Km. 280, Lhokseumawe, Indonesia; Department of Environmental Engineering, Faculty of Civil and Environmental Engineering, Institut Teknologi Bandung, Jalan Ganesha No. 10, Bandung, Indonesia

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