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Theoretical and experimental study on the transient adsorption characteristics of a vertical packed porous bed

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  • Hamed, Ahmed M.

Abstract

This paper presents a theoretical and experimental study of the transient adsorption characteristics of vertical packed porous bed. The theoretical model describes the effect of independent parameters (time and vertical distance through the bed) on the vertical gradient of adsorbable fluid in the bed. A simplified analytical solution, for specific operating conditions, is also presented. In the experimental study, porous granules of burned clay are applied as a desiccant carrier in the fixed bed. The granules of the packed bed are impregnated with liquid calcium chloride solution to form the porous adsorbing surface. The isothermal adsorption of water vapour from atmospheric air using the prepared bed is experimentally studied. Transient values of the mass of adsorbed water vapour, solution concentration and vapour pressure through the bed layers are evaluated from the experimental measurements. The model output, which show the effect of dimensionless relative time (Tr) on the potential ratio (C−C∗)/(C−C∗0), is compared with the experimental results and good agreement is found.

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  • Hamed, Ahmed M., 2002. "Theoretical and experimental study on the transient adsorption characteristics of a vertical packed porous bed," Renewable Energy, Elsevier, vol. 27(4), pages 525-541.
    • Handle: RePEc:eee:renene:v:27:y:2002:i:4:p:525-541
    DOI: 10.1016/S0960-1481(01)00112-4
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    References listed on IDEAS

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    1. Hamed, Ahmed M, 2000. "Absorption–regeneration cycle for production of water from air-theoretical approach," Renewable Energy, Elsevier, vol. 19(4), pages 625-635.
    2. Gandhidasan, P. & Abualhamayel, H.I., 1996. "Water recovery from the atmosphere," Renewable Energy, Elsevier, vol. 9(1), pages 745-748.
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    Cited by:

    1. 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.
    2. Kabeel, A.E., 2009. "Adsorption–desorption operations of multilayer desiccant packed bed for dehumidification applications," Renewable Energy, Elsevier, vol. 34(1), pages 255-265.
    3. N’Tsoukpoe, Kokouvi Edem & Yamegueu, Daniel & Bassole, Justin, 2014. "Solar sorption refrigeration in Africa," Renewable and Sustainable Energy Reviews, Elsevier, vol. 35(C), pages 318-335.
    4. Yao, Ye & Yang, Kun & Liu, Shiqing, 2014. "Study on the performance of silica gel dehumidification system with ultrasonic-assisted regeneration," Energy, Elsevier, vol. 66(C), pages 799-809.
    5. Hamed, Ahmed M., 2005. "Experimental investigation on the adsorption/desorption processes using solid desiccant in an inclined-fluidized bed," Renewable Energy, Elsevier, vol. 30(12), pages 1913-1921.
    6. Hamed, Ahmed M., 2003. "Desorption characteristics of desiccant bed for solar dehumidification/humidification air conditioning systems," Renewable Energy, Elsevier, vol. 28(13), pages 2099-2111.
    7. Ramzy, Ahmed K. & Kadoli, Ravikiran & T.P., Ashok Babu, 2013. "Experimental and theoretical investigations on the cyclic operation of TSA cycle for air dehumidification using packed beds of silica gel particles," Energy, Elsevier, vol. 56(C), pages 8-24.
    8. Hamed, Ahmed M. & Abd El Rahman, Walaa R. & El-Emam, S.H., 2010. "Experimental study of the transient adsorption/desorption characteristics of silica gel particles in fluidized bed," Energy, Elsevier, vol. 35(6), pages 2468-2483.
    9. Shamim, Jubair A. & Hsu, Wei-Lun & Paul, Soumyadeep & Yu, Lili & Daiguji, Hirofumi, 2021. "A review of solid desiccant dehumidifiers: Current status and near-term development goals in the context of net zero energy buildings," Renewable and Sustainable Energy Reviews, Elsevier, vol. 137(C).
    10. Mawire, A. & McPherson, M. & Heetkamp, R.R.J. van den & Mlatho, S.J.P., 2009. "Simulated performance of storage materials for pebble bed thermal energy storage (TES) systems," Applied Energy, Elsevier, vol. 86(7-8), pages 1246-1252, July.
    11. Yeboah, S.K. & Darkwa, J., 2016. "A critical review of thermal enhancement of packed beds for water vapour adsorption," Renewable and Sustainable Energy Reviews, Elsevier, vol. 58(C), pages 1500-1520.
    12. Mawire, A. & McPherson, M. & van den Heetkamp, R.R.J., 2009. "Thermal performance of a small oil-in-glass tube thermal energy storage system during charging," Energy, Elsevier, vol. 34(7), pages 838-849.

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