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Experimental investigation on the natural absorption on the surface of sandy layer impregnated with liquid desiccant

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  • Hamed, A.M.

Abstract

This paper presents an investigation on the natural absorption of water vapour of the gaseous-air mixture on the horizontal surface of a sandy layer impregnated with calcium chloride as the working desiccant. Seven layers with different values of desiccant to sand mass ratio in the range from 0.1 to 0.4 are studied. Isothermal absorption is assumed in this analysis. The effect of desiccant concentration as well as Grashof number on the mass transfer coefficient is discussed. Also, the effect of the mixing ratio (desiccant/sand) in the bed on the rate of absorption is demonstrated. Experimental results show that the mass transfer coefficient is highly affected by the desiccant concentration in the bed. Also, it is found that the potential of mass transfer rapidly decreases with a decrease in mixing ratio.

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  • Hamed, A.M., 2003. "Experimental investigation on the natural absorption on the surface of sandy layer impregnated with liquid desiccant," Renewable Energy, Elsevier, vol. 28(10), pages 1587-1596.
    • Handle: RePEc:eee:renene:v:28:y:2003:i:10:p:1587-1596
    DOI: 10.1016/S0960-1481(03)00005-3
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    References listed on IDEAS

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    1. Gad, H.E & Hamed, A.M & El-Sharkawy, I.I, 2001. "Application of a solar desiccant/collector system for water recovery from atmospheric air," Renewable Energy, Elsevier, vol. 22(4), pages 541-556.
    2. Gandhidasan, P. & Abualhamayel, H.I., 1996. "Water recovery from the atmosphere," Renewable Energy, Elsevier, vol. 9(1), pages 745-748.
    3. Hamed, Ahmed M, 2000. "Absorption–regeneration cycle for production of water from air-theoretical approach," Renewable Energy, Elsevier, vol. 19(4), pages 625-635.
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    Cited by:

    1. Talaat, M.A. & Awad, M.M. & Zeidan, E.B. & Hamed, A.M., 2018. "Solar-powered portable apparatus for extracting water from air using desiccant solution," Renewable Energy, Elsevier, vol. 119(C), pages 662-674.
    2. Shafeian, Nafise & Ranjbar, A.A. & Gorji, Tahereh B., 2022. "Progress in atmospheric water generation systems: A review," Renewable and Sustainable Energy Reviews, Elsevier, vol. 161(C).
    3. Hamed, Ahmed M. & Khalil, A. & Kabeel, A.E. & Bassuoni, M.M. & Elzahaby, A.M., 2005. "Performance analysis of dehumidification rotating wheel using liquid desiccant," Renewable Energy, Elsevier, vol. 30(11), pages 1689-1712.
    4. Fathy, Mohamed H. & Awad, Mohamed M. & Zeidan, El-Shafei B. & Hamed, Ahmed M., 2020. "Solar powered foldable apparatus for extracting water from atmospheric air," Renewable Energy, Elsevier, vol. 162(C), pages 1462-1489.
    5. William, G.E. & Mohamed, M.H. & Fatouh, M., 2015. "Desiccant system for water production from humid air using solar energy," Energy, Elsevier, vol. 90(P2), pages 1707-1720.
    6. El-Ghonemy, A.M.K., 2012. "Fresh water production from/by atmospheric air for arid regions, using solar energy: Review," Renewable and Sustainable Energy Reviews, Elsevier, vol. 16(8), pages 6384-6422.
    7. Reif, John H. & Alhalabi, Wadee, 2015. "Solar-thermal powered desalination: Its significant challenges and potential," Renewable and Sustainable Energy Reviews, Elsevier, vol. 48(C), pages 152-165.

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