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Study of heat and mass transfer in a dehumidifying desiccant bed with macro-encapsulated phase change materials

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  • Rady, M.A.
  • Huzayyin, A.S.
  • Arquis, E.
  • Monneyron, P.
  • Lebot, C.
  • Palomo, E.

Abstract

The present article reports on the feasibility of using encapsulated phase change materials (EPCMs) in the dehumidifying bed of a desiccant cooling system. The mathematical model used to simulate the coupled non-equilibrium heat and moisture transfer processes in the porous composite structure containing the EPCM and desiccant particles is presented. Numerical investigations of heat and mass transfer in a desiccant dehumidifying bed composed of silica gel and EPCM particles have been carried out for different values of process parameters. Careful choices of EPCM volume fraction and thermo physical characteristics have been found to increase the overall effectiveness of the desiccant dehumidifier with negligible loss in the dehumidification efficiency. The air stream exits the desiccant/EPCM bed at relatively lower temperature and slightly higher moisture content than from purely desiccant bed. Desiccant cooling systems with less sensible heating and higher cooling capacity can be obtained by employing EPCM in the dehumidifier.

Suggested Citation

  • Rady, M.A. & Huzayyin, A.S. & Arquis, E. & Monneyron, P. & Lebot, C. & Palomo, E., 2009. "Study of heat and mass transfer in a dehumidifying desiccant bed with macro-encapsulated phase change materials," Renewable Energy, Elsevier, vol. 34(3), pages 718-726.
    • Handle: RePEc:eee:renene:v:34:y:2009:i:3:p:718-726
    DOI: 10.1016/j.renene.2008.04.038
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    References listed on IDEAS

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    1. Daou, K. & Wang, R.Z. & Xia, Z.Z., 2006. "Desiccant cooling air conditioning: a review," Renewable and Sustainable Energy Reviews, Elsevier, vol. 10(2), pages 55-77, April.
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    1. Rady, Mohamed, 2009. "Thermal performance of packed bed thermal energy storage units using multiple granular phase change composites," Applied Energy, Elsevier, vol. 86(12), pages 2704-2720, December.
    2. Fahid Riaz & Muhammad Abdul Qyyum & Awais Bokhari & Jiří Jaromír Klemeš & Muhammad Usman & Muhammad Asim & Muhammad Rizwan Awan & Muhammad Imran & Moonyong Lee, 2021. "Design and Energy Analysis of a Solar Desiccant Evaporative Cooling System with Built-In Daily Energy Storage," Energies, MDPI, vol. 14(9), pages 1-17, April.
    3. Rambhad, Kishor S. & Walke, Pramod V. & Tidke, D.J., 2016. "Solid desiccant dehumidification and regeneration methods—A review," Renewable and Sustainable Energy Reviews, Elsevier, vol. 59(C), pages 73-83.
    4. Jagirdar, Mrinal & Lee, Poh Seng, 2018. "Mathematical modeling and performance evaluation of a desiccant coated fin-tube heat exchanger," Applied Energy, Elsevier, vol. 212(C), pages 401-415.
    5. Enteria, Napoleon & Mizutani, Kunio, 2011. "The role of the thermally activated desiccant cooling technologies in the issue of energy and environment," Renewable and Sustainable Energy Reviews, Elsevier, vol. 15(4), pages 2095-2122, May.
    6. Husham Abdulmalek, Shaymaa & Khalaji Assadi, Morteza & Al-Kayiem, Hussain H. & Gitan, Ali Ahmed, 2018. "A comparative analysis on the uniformity enhancement methods of solar thermal drying," Energy, Elsevier, vol. 148(C), pages 1103-1115.
    7. 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).
    8. Ramzy K., A. & Kadoli, R. & Ashok Babu, T.P., 2011. "Improved utilization of desiccant material in packed bed dehumidifier using composite particles," Renewable Energy, Elsevier, vol. 36(2), pages 732-742.
    9. 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.
    10. Rao, Zhonghao & Wang, Shuangfeng & Peng, Feifei, 2012. "Self diffusion of the nano-encapsulated phase change materials: A molecular dynamics study," Applied Energy, Elsevier, vol. 100(C), pages 303-308.
    11. Kabeel, A.E. & Abdelgaied, Mohamed, 2018. "Solar energy assisted desiccant air conditioning system with PCM as a thermal storage medium," Renewable Energy, Elsevier, vol. 122(C), pages 632-642.

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