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Exergy transfer characteristics of gas-solid heat transfer through sinter bed layer in vertical tank

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  • Feng, Jun-sheng
  • Dong, Hui
  • Gao, Jian-ye
  • Liu, Jing-yu
  • Liang, Kai

Abstract

The examination of exergy transfer characteristics caused by gas-solid heat transfer through sinter bed layer in vertical tank has been presented. Correlations involving relevant variables to predict the mean exergy transfer coefficient, the mean exergy transfer Nusselt number and the non-dimensional exergy flux have been derived by applying the second law of thermodynamics and non-equilibrium thermodynamics theory. The relationships of mean exergy transfer Nusselt number with the heat transfer Nusselt number, Reynolds number, the non-dimensional heat flux and the non-dimensional pressure drop are determined. The experimental results of exergy transfer characteristics in sinter bed layer with different gas superficial velocity, sinter particle diameter and bed layer height are obtained from homemade gas-solid heat transfer setup, and the effects of air outlet temperature, non-dimensional temperature and Reynolds number on the exergy transfer characteristics are analyzed. The research results show that for a given experimental condition, the mean exergy transfer Nusselt number gradually decreases with the increase of Reynolds number and sinter bed layer height. The mean exergy transfer Nusselt number would be less than zero for a lower air outlet temperature, which is pointless for gas-solid heat transfer process in sinter bed layer.

Suggested Citation

  • Feng, Jun-sheng & Dong, Hui & Gao, Jian-ye & Liu, Jing-yu & Liang, Kai, 2016. "Exergy transfer characteristics of gas-solid heat transfer through sinter bed layer in vertical tank," Energy, Elsevier, vol. 111(C), pages 154-164.
    • Handle: RePEc:eee:energy:v:111:y:2016:i:c:p:154-164
    DOI: 10.1016/j.energy.2016.05.113
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    References listed on IDEAS

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    Cited by:

    1. Zude Cheng & Haitao Wang & Junsheng Feng & Yongfang Xia & Hui Dong, 2021. "Energy and Exergy Efficiency Analysis of Fluid Flow and Heat Transfer in Sinter Vertical Cooler," Energies, MDPI, vol. 14(15), pages 1-18, July.
    2. Chenyi Xu & Zhichun Liu & Shicheng Wang & Wei Liu, 2019. "Numerical Simulation and Optimization of Waste Heat Recovery in a Sinter Vertical Tank," Energies, MDPI, vol. 12(3), pages 1-19, January.
    3. Zheng, Ying & Cai, Jiu-ju & Dong, Hui & Feng, Jun-sheng & Liu, Jing-yu, 2019. "Experimental investigation of volumetric exergy transfer coefficient in vertical moving bed for sinter waste heat recovery," Energy, Elsevier, vol. 167(C), pages 428-439.
    4. Junpeng Fu & Jiuju Cai, 2020. "Parametric Study on the Flow Profiles of Vertical Sinter Cooling Bed Using the DEM and Taguchi Method for Waste Heat Recovery," Energies, MDPI, vol. 13(19), pages 1-34, September.

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