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In regions marked by scorching climates, minimal freshwater resources, and abundant solar energy potential like the Saharan area, solar energy deployment holds great promise, particularly for seawater desalination and refrigeration. This research introduces an inventive approach that merges a mechanical vapor compression (MVC) desalination unit with an absorption refrigeration machine (ARM), both driven by solar photovoltaic thermal (PVT) collectors. The central concept involves harnessing the waste heat from the cold production machine’s condenser to preheat a portion of the incoming seawater, thereby enhancing the coefficient of performance (COP) of the ARM system. The PVT setup concurrently furnishes the necessary electrical power for the compressor and thermal energy for cold production or seawater heating. This study delves into the impact of two critical temperature differentials, namely, the difference between saturated compressed vapor and boiling brine (ΔT1) and the disparity between the generator and absorber temperatures (ΔT2) on the integrated MVC-ARM system. The findings underscore that a substantial ΔT1 diminishes the heat transfer area within the MVC evaporator while raising compressor energy consumption. Conversely, operations featuring elevated ΔT2 values bolster COP while curtailing electric consumption. Collectively, this investigation validates the efficacy of the PVT system in augmenting the overall efficiency of the MVC-ARM configuration.

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A Desalination-Refrigeration Unit That Uses Photovoltaic/Thermal Collectors to Generate Electricity and Heat for Desalination and Refrigeration

  • 章节

  • 发表日期：

    2025年

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  • Mouhsine Ibrahimi,
  • Dris Bahia,
  • Zouhair Meghari,
  • Mohammed Zouini

摘要

In regions marked by scorching climates, minimal freshwater resources, and abundant solar energy potential like the Saharan area, solar energy deployment holds great promise, particularly for seawater desalination and refrigeration. This research introduces an inventive approach that merges a mechanical vapor compression (MVC) desalination unit with an absorption refrigeration machine (ARM), both driven by solar photovoltaic thermal (PVT) collectors. The central concept involves harnessing the waste heat from the cold production machine’s condenser to preheat a portion of the incoming seawater, thereby enhancing the coefficient of performance (COP) of the ARM system. The PVT setup concurrently furnishes the necessary electrical power for the compressor and thermal energy for cold production or seawater heating. This study delves into the impact of two critical temperature differentials, namely, the difference between saturated compressed vapor and boiling brine (ΔT1) and the disparity between the generator and absorber temperatures (ΔT2) on the integrated MVC-ARM system. The findings underscore that a substantial ΔT1 diminishes the heat transfer area within the MVC evaporator while raising compressor energy consumption. Conversely, operations featuring elevated ΔT2 values bolster COP while curtailing electric consumption. Collectively, this investigation validates the efficacy of the PVT system in augmenting the overall efficiency of the MVC-ARM configuration.