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Three-dimensional numerical analysis of fin-tube desiccant-coated heat exchanger for air dehumidification in tropics

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  • Liu, M.
  • Prabakaran, V.
  • Bui, T.
  • Cheng, G.G.
  • Pang, W.

Abstract

High-performance desiccant-coated heat exchangers (DCHEs) can be employed in air-conditioning systems to improve energy efficiency. While there are significant developments in experimental studies, theoretical approaches for analyzing the DCHE are impeded by the complex and coupled heat and mass transport mechanisms. Therefore, a 3D mathematical model has been developed in this work to study the dehumidification performance of a DCHE. Unlike other works reported in the literature, the developed model is able to simulate the complex coupling between heat and mass transfers in the entire volume of the heat exchanger. The model is calibrated and validated with experimental data, and a maximum discrepancy of ±8 % is recorded. A time-dependent study on the performance of the DCHE is carried out to understand the distribution of temperature, reaction rates, and water uptake in the heat exchanger. Effects of key influencing operational factors are investigated and discussed. It is indicated that the DCHE enters a stable performance state regardless of its initial adsorption state. The regeneration time should be equal to the dehumidification time to optimize the performance. A higher thermal COP is achieved under lower cooling/regeneration temperature, lower air flowrate, and shorter half-cycle time, while higher inlet air humidity ratio. Higher coated desiccant mass also provides a higher thermal COP, but this enhancement levels off once the coating grows. For DCHEs with less coating, reducing cycle time is recommended over increasing the coating amount.

Suggested Citation

  • Liu, M. & Prabakaran, V. & Bui, T. & Cheng, G.G. & Pang, W., 2023. "Three-dimensional numerical analysis of fin-tube desiccant-coated heat exchanger for air dehumidification in tropics," Applied Energy, Elsevier, vol. 331(C).
    • Handle: RePEc:eee:appene:v:331:y:2023:i:c:s0306261922016038
    DOI: 10.1016/j.apenergy.2022.120346
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    References listed on IDEAS

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    1. Ge, T.S. & Zhang, J.Y. & Dai, Y.J. & Wang, R.Z., 2017. "Experimental study on performance of silica gel and potassium formate composite desiccant coated heat exchanger," Energy, Elsevier, vol. 141(C), pages 149-158.
    2. Vivekh, P. & Bui, D.T. & Wong, Y. & Kumja, M. & Chua, K.J., 2019. "Performance evaluation of PVA-LiCl coated heat exchangers for next-generation of energy-efficient dehumidification," Applied Energy, Elsevier, vol. 237(C), pages 733-750.
    3. Zheng, X. & Wang, R.Z. & Ge, T.S. & Hu, L.M., 2015. "Performance study of SAPO-34 and FAPO-34 desiccants for desiccant coated heat exchanger systems," Energy, Elsevier, vol. 93(P1), pages 88-94.
    4. Vivekh, P. & Kumja, M. & Bui, D.T. & Chua, K.J., 2018. "Recent developments in solid desiccant coated heat exchangers – A review," Applied Energy, Elsevier, vol. 229(C), pages 778-803.
    5. Oh, Seung Jin & Ng, Kim Choon & Chun, Wongee & Chua, Kian Jon Ernest, 2017. "Evaluation of a dehumidifier with adsorbent coated heat exchangers for tropical climate operations," Energy, Elsevier, vol. 137(C), pages 441-448.
    6. Bivas Panigrahi & Yu Sheng Chen & Win Jet Luo & Hung Wei Wang, 2020. "Dehumidification Effect of Polymeric Superabsorbent SAP-LiCl Composite Desiccant-Coated Heat Exchanger with Different Cyclic Switching Time," Sustainability, MDPI, vol. 12(22), pages 1-16, November.
    7. 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.
    8. Chen, W.D. & Vivekh, P. & Liu, M.Z. & Kumja, M. & Chua, K.J., 2021. "Energy improvement and performance prediction of desiccant coated dehumidifiers based on dimensional and scaling analysis," Applied Energy, Elsevier, vol. 303(C).
    9. Ge, T.S. & Dai, Y.J. & Wang, R.Z. & Peng, Z.Z., 2010. "Experimental comparison and analysis on silica gel and polymer coated fin-tube heat exchangers," Energy, Elsevier, vol. 35(7), pages 2893-2900.
    10. Venegas, Tomas & Qu, Ming & Nawaz, Kashif & Wang, Lingshi, 2021. "Critical review and future prospects for desiccant coated heat exchangers: Materials, design, and manufacturing," Renewable and Sustainable Energy Reviews, Elsevier, vol. 151(C).
    11. Vivekh, P. & Bui, D.T. & Islam, M.R. & Zaw, K. & Chua, K.J., 2020. "Experimental performance and energy efficiency investigation of composite superabsorbent polymer and potassium formate coated heat exchangers," Applied Energy, Elsevier, vol. 275(C).
    12. Sun, X.Y. & Dai, Y.J. & Ge, T.S. & Zhao, Y. & Wang, R.Z., 2017. "Comparison of performance characteristics of desiccant coated air-water heat exchanger with conventional air-water heat exchanger – Experimental and analytical investigation," Energy, Elsevier, vol. 137(C), pages 399-411.
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    2. Bui, T.D. & Chen, W.D. & Islam, M.R. & Zhao, D. & Chua, K.J., 2023. "Studying the performance of a pilot scale vacuum-based membrane dehumidifier," Applied Energy, Elsevier, vol. 351(C).
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