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Deposition Distribution and Thermal Resistance Analysis of Fins in Heat Exchangers

Author

Listed:
  • Weigang Xu

    (School of Mechanical Engineering and Rail Transit, Changzhou University, Changzhou 213164, China
    Jiangsu Key Laboratory of Green Process Equipment, Changzhou University, Changzhou 213164, China)

  • Shijian Zhang

    (School of Mechanical Engineering and Rail Transit, Changzhou University, Changzhou 213164, China)

  • Quan Yang

    (School of Mechanical Engineering and Rail Transit, Changzhou University, Changzhou 213164, China)

  • Lei Zhang

    (School of Mechanical Engineering and Rail Transit, Changzhou University, Changzhou 213164, China
    Changzhou Withon GreenTech Co., Ltd., Changzhou 213164, China)

  • Chongsheng Ge

    (School of Mechanical Engineering and Rail Transit, Changzhou University, Changzhou 213164, China)

  • Ao Wang

    (School of Mechanical Engineering and Rail Transit, Changzhou University, Changzhou 213164, China
    Jiangsu Key Laboratory of Green Process Equipment, Changzhou University, Changzhou 213164, China)

  • Shi Bu

    (School of Mechanical Engineering and Rail Transit, Changzhou University, Changzhou 213164, China
    Jiangsu Key Laboratory of Green Process Equipment, Changzhou University, Changzhou 213164, China)

  • Weibing Lv

    (Changzhou Withon GreenTech Co., Ltd., Changzhou 213164, China)

  • Lin Zhang

    (School of Mechanical Engineering and Rail Transit, Changzhou University, Changzhou 213164, China
    Jiangsu Key Laboratory of Green Process Equipment, Changzhou University, Changzhou 213164, China)

Abstract

The deposition of fly ash on the heat exchanger will reduce the heat transfer efficiency of the system. This article conducted experiments and simulations on the deposition, exploring the effects of velocity, particle size on the deposition position. In addition, deposition density distribution was demonstrated, the calculation method of fin thermal resistance was improved, and the efficiency of fins was also calculated. The results showed that deposition decreased with velocity increasing, and the simulation results were in good agreement with the experimental results. The deposition distribution of the first section of the fin is unimodal, and the maximum deposition value approaches the peak of the fin. The distribution of the second section of the fin becomes bimodal with increasing velocity. In addition, as the speed increases, due to the decrease in deposition mass, the thermal resistance decreases by 53.2% and the fin efficiency increases by 8.82%.

Suggested Citation

  • Weigang Xu & Shijian Zhang & Quan Yang & Lei Zhang & Chongsheng Ge & Ao Wang & Shi Bu & Weibing Lv & Lin Zhang, 2024. "Deposition Distribution and Thermal Resistance Analysis of Fins in Heat Exchangers," Energies, MDPI, vol. 17(16), pages 1-24, August.
    • Handle: RePEc:gam:jeners:v:17:y:2024:i:16:p:3952-:d:1453131
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    References listed on IDEAS

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    1. Xiaoqiang Chen & Xinye Ji & Jinjin Feng & Lijun Heng & Lingling Zhao, 2023. "Laboratory Study on Adhesive Ash Deposition Characteristics of Ammonium Bisulfate in Conditions Simulating an Air Preheater for Hard Coal Combustion," Energies, MDPI, vol. 16(18), pages 1-17, September.
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