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Desiccant system for water production from humid air using solar energy

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  • William, G.E.
  • Mohamed, M.H.
  • Fatouh, M.

Abstract

Decentralized and remote areas suffer from fresh water shortage. A new sustainable energy technique called “Water Extraction from Atmospheric Air” is introduced as a beneficial solution for this problem. This system involves the absorption of water vapor from ambient air during the night time. Then, simultaneous desiccant regeneration and water vapor condensation during the day time will be occurred. In this study, a trapezoidal prism solar collector with four fiberglass sides is designed and constructed. This collector has multi-shelves bed (desiccant carrier) in order to maximize bed surface area inside the collector. Consequently, the absorption and evaporation surfaces are increased. The experimental work shows the effect of weather conditions in system operation for both day time and night time. The regeneration and absorption processes are discussed for each operation condition. Also, different host materials (cloth and sand) with calcium chloride solution are investigated. An illustrative comparison between different bed types is demonstrated. The results revealed that the total evaporated water for cloth and sand bed can reach 2.32 and 1.23 slit/days m2 at initial saturation concentration (30%) of cacl2. However, the system efficiency is 29.3 and 17.76% for cloth and sand bed, respectively.

Suggested Citation

  • 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.
    • Handle: RePEc:eee:energy:v:90:y:2015:i:p2:p:1707-1720
    DOI: 10.1016/j.energy.2015.06.125
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    References listed on IDEAS

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    1. 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.
    2. Kabeel, A.E., 2007. "Water production from air using multi-shelves solar glass pyramid system," Renewable Energy, Elsevier, vol. 32(1), pages 157-172.
    3. 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.
    4. Hamed, Ahmed M. & Sultan, Ahmed A., 2002. "Mass transfer in vertical cloth layers impregnated with calcium chloride for recovery of water from air," Renewable Energy, Elsevier, vol. 27(1), pages 13-25.
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    Cited by:

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    6. Zhang, Qiaoxin & Tu, Rang & Liu, Mengdan, 2023. "Performance analyses and optimization studies of desiccant wheel assisted atmospheric water harvesting system under global ambient conditions," Energy, Elsevier, vol. 283(C).
    7. 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.
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    9. 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.
    10. Agrawal, Anshu & Kumar, Amit & Parekh, A.D., 2023. "Experimental investigation of solar driven atmospheric water generation system based on air-to-air heat exchanger," Energy, Elsevier, vol. 271(C).
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    13. Qing Cheng & Han Wang & Lin Zhu & Yao Chen, 2023. "A current efficiency model coupled with desiccant molecular weight for electrodialysis regeneration in liquid desiccant air-conditioning systems," Energy & Environment, , vol. 34(4), pages 909-926, June.
    14. Chen, Zhihui & Deng, Fangfang & Yang, Xinge & Shao, Zhao & Du, Shuai & Wang, Ruzhu, 2024. "Highly efficient portable atmospheric water harvester with integrated structure design for high yield water production," Energy, Elsevier, vol. 293(C).

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