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<p>Reducing the energy consumption of desalination plants is a critical global research priority, particularly when these facilities are integrated with renewable energy systems. This study presents the design of a seawater desalination plant using reverse osmosis technology (SWRO) with a capacity of 120 m<sup>3</sup>/day in Tajoura city, powered by an off-grid photovoltaic solar system (PV). The design process focused on evaluating the performance of a key component—the membrane element—to identify the option with the lowest specific energy consumed (SEC), thereby minimizing the energy required from the PV system. Nine different 8-inch diameter membrane elements were compared using ROSA software for the SWRO system and PVsyst software for the solar PV design. Among the tested membranes, the SW30ULE-440i membrane element (S9) demonstrated the lowest specific energy consumption of approximately 4.92&#xa0;kWh/m<sup>3</sup>, representing a 25.7% reduction compared to other membranes with higher values, and also resulted in the lowest PV energy demand, estimated at 590 kWh/day. These results underscore the importance of selecting energy-efficient membranes to optimize the performance of solar-powered SWRO desalination systems.</p>

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Effect of membrane type selection on energy production during the design of a PV-SWRO system

  • 期刊论文

  • 发表日期：

    2025年11月1日

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  • A. K. Elfaqih,
  • A. Elbaz

摘要

Reducing the energy consumption of desalination plants is a critical global research priority, particularly when these facilities are integrated with renewable energy systems. This study presents the design of a seawater desalination plant using reverse osmosis technology (SWRO) with a capacity of 120 m3/day in Tajoura city, powered by an off-grid photovoltaic solar system (PV). The design process focused on evaluating the performance of a key component—the membrane element—to identify the option with the lowest specific energy consumed (SEC), thereby minimizing the energy required from the PV system. Nine different 8-inch diameter membrane elements were compared using ROSA software for the SWRO system and PVsyst software for the solar PV design. Among the tested membranes, the SW30ULE-440i membrane element (S9) demonstrated the lowest specific energy consumption of approximately 4.92 kWh/m3, representing a 25.7% reduction compared to other membranes with higher values, and also resulted in the lowest PV energy demand, estimated at 590 kWh/day. These results underscore the importance of selecting energy-efficient membranes to optimize the performance of solar-powered SWRO desalination systems.