Integrated solar-powered freeze desalination and water electrolysis system with energy recovery and storage for sustainable agriculture in desert environments
<p dir="ltr">Agricultural activities in remote desert locations face significant challenges due to high water and energy demands and the lack of necessary infrastructure. The use of portable <u>diesel</u> generators, while common in <u>smallholder</u> farmers,...
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2024
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| Summary: | <p dir="ltr">Agricultural activities in remote desert locations face significant challenges due to high water and energy demands and the lack of necessary infrastructure. The use of portable <u>diesel</u> generators, while common in <u>smallholder</u> farmers, leads to substantial pollution on-site. Efficient utilization of naturally available energy and water sources for the supply of essential commodities would greatly support the execution of agricultural activities in desert climates. Freeze <u>desalination</u> offers many benefits over <u>distillation</u> <u>processes</u>, such as low energy demand, negligible fouling, scaling, or corrosion, and no requirement of <u>pretreatment </u>for purification. Besides, <u>hydrogen fuel</u> cell is a clean alternative to a diesel generator as it possesses high conversion efficiency and eliminates greenhouse gas (GHG) emissions and noise pollution. This study proposes a stand-alone solar-powered freeze desalination and <u>electrolysis</u> system for freshwater and <u>green hydrogen</u> production from brackish groundwater in remote desert regions. The system is equipped with several energy recovery and storage solutions such as cistern, ice storage air conditioning, and <u>metal hydride</u> canisters with fuel cell to efficiently utilize energy and water and compensate for fluctuations in <u>solar irradiation</u>. The<u> integrated system</u> is modeled and analyzed based on thermodynamic principles, and results demonstrated the daily capacity of producing 52.8 m<sup>3</sup> freshwater, 6.3 MWh air conditioning, 177 kg hydrogen, and 2.4 MWh electricity using 10,785m<sup>2</sup> bifacial <u>photovoltaics system</u>. Moreover, the energetic and <u>exergetic efficiency</u> of the system is calculated as 17.8 % and 13.5% during day and 56 % and 34.9 % during night, respectively.</p><h2>Other Information</h2><p dir="ltr">Published in: Desalination<br>License: <a href="http://creativecommons.org/licenses/by/4.0/" target="_blank">http://creativecommons.org/licenses/by/4.0/</a><br>See article on publisher's website: <a href="https://dx.doi.org/10.1016/j.desal.2024.118321" target="_blank">https://dx.doi.org/10.1016/j.desal.2024.118321</a></p> |
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