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<p>This study presents a steady-state thermodynamic and numerical investigation of cooling-air flow and gas–solid heat transfer in a sintering vertical furnace. Under fixed operating conditions of gas-to-material ratio, cooling-section height, and furnace diameter, four porosity cases (<i>ε</i> = 0.3,0.4,0.5, and 0.6) were comparatively analyzed to evaluate their effects on cooling performance and energy utilization. The results show that porosity significantly affects flow resistance, gas–solid heat transfer, outlet temperatures, and the cooling-air exergy rate. Among the investigated cases, the porosity of 0.6 exhibits the best overall thermal and thermodynamic performance under the present operating conditions. A CFD model was further established to analyze the corresponding temperature, velocity, and pressure fields of the best-performing case. The results provide useful insight into the role of bed porosity in vertical furnace cooling and offer guidance for parameter selection in industrial operation.</p>

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Effect of bed porosity on gas flow and heat transfer in a sintering vertical furnace: thermodynamic analysis and numerical simulation

  • 期刊论文

  • 发表日期：

    2026年7月3日

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  • Xinwei Guo,
  • Chen Li,
  • Yiming Guo,
  • Yinhao Gao,
  • Xiaojiang Wu,
  • Yanchi Jiang,
  • Lihui Wei,
  • Shuhuai Wang,
  • Changzhi Lin,
  • Yanlin Wen,
  • Xuesen Du,
  • Hengyu Yin,
  • Baoming Chen,
  • Degui Bi,
  • Peipei Gao,
  • Tuo Zhou

摘要

This study presents a steady-state thermodynamic and numerical investigation of cooling-air flow and gas–solid heat transfer in a sintering vertical furnace. Under fixed operating conditions of gas-to-material ratio, cooling-section height, and furnace diameter, four porosity cases (ε = 0.3,0.4,0.5, and 0.6) were comparatively analyzed to evaluate their effects on cooling performance and energy utilization. The results show that porosity significantly affects flow resistance, gas–solid heat transfer, outlet temperatures, and the cooling-air exergy rate. Among the investigated cases, the porosity of 0.6 exhibits the best overall thermal and thermodynamic performance under the present operating conditions. A CFD model was further established to analyze the corresponding temperature, velocity, and pressure fields of the best-performing case. The results provide useful insight into the role of bed porosity in vertical furnace cooling and offer guidance for parameter selection in industrial operation.