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Modeling of Water Generation from Air Using Anhydrous Salts

Author

Listed:
  • Shereen K. Sibie

    (College of Engineering, Effat University, Jeddah 21478, Saudi Arabia)

  • Mohamed F. El-Amin

    (College of Engineering, Effat University, Jeddah 21478, Saudi Arabia
    Mathematics Department, Faculty of Science, Aswan University, Aswan 81528, Egypt)

  • Shuyu Sun

    (Division of Physical Sciences and Engineering (PSE), King Abdullah University of Science and Technology (KAUST), Thuwal, Jeddah 23955-6900, Saudi Arabia)

Abstract

The atmosphere contains 3400 trillion gallons of water vapor, which would be enough to cover the entire Earth with a one-inch layer of water. As air humidity is available everywhere, it acts as an abundant renewable water reservoir, known as atmospheric water. The efficiency of an atmospheric water harvesting system depends on the sorption capacities of water-based absorption materials. Using anhydrous salts is an efficient process in capturing and delivering water from ambient air, especially under a condition of low relative humidity, as low as 15%. Many water-scarce countries, like Saudi Arabia, receive high annual solar radiation and have relatively high humidity levels. This study is focused on the simulation and modeling of the water absorption capacities of three anhydrous salts under different relative humidity environments: copper chloride (CuCl 2 ), copper sulfate (CuSO 4 ), and magnesium sulfate (MgSO 4 ), to produce atmospheric drinking water in water-scarce regions. By using a mathematical model to simulate water absorption, this study attempts to compare and model the results of the current computed model with the laboratory experimental results under static and dynamic relative humidities. This paper also proposes a prototype of a system to produce atmospheric water using these anhydrous salts. A sensitivity analysis was also undertaken on these three selected salts to determine how the uniformity of their stratified structures, thicknesses, and porosities as applied in the mathematical model influence the results.

Suggested Citation

  • Shereen K. Sibie & Mohamed F. El-Amin & Shuyu Sun, 2021. "Modeling of Water Generation from Air Using Anhydrous Salts," Energies, MDPI, vol. 14(13), pages 1-21, June.
  • Handle: RePEc:gam:jeners:v:14:y:2021:i:13:p:3822-:d:581932
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    References listed on IDEAS

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    Cited by:

    1. Husam S. Al-Duais & Muhammad Azzam Ismail & Zakaria Alcheikh Mahmoud Awad & Karam M. Al-Obaidi, 2022. "Performance Evaluation of Solar-Powered Atmospheric Water Harvesting Using Different Glazing Materials in the Tropical Built Environment: An Experimental Study," Energies, MDPI, vol. 15(9), pages 1-19, April.
    2. Tashtoush, Bourhan & Alshoubaki, Anas, 2023. "Atmospheric water harvesting: A review of techniques, performance, renewable energy solutions, and feasibility," Energy, Elsevier, vol. 280(C).
    3. Ahmed Almasarani & Imtiaz K. Ahmad & Mohamed F. El-Amin & Tayeb Brahimi, 2022. "Experimental Investigations and Modeling of Atmospheric Water Generation Using a Desiccant Material," Energies, MDPI, vol. 15(18), pages 1-19, September.

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