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A Study of a Two-Phase Heat Transfer Mechanism in a Vertical Sintering Cooling Furnace

Author

Listed:
  • Weihui Xu

    (College of Energy and Power Engineering, North China University of Water Resources and Electric Power, Zhengzhou 450045, China)

  • Qinbao Wang

    (College of Energy and Power Engineering, North China University of Water Resources and Electric Power, Zhengzhou 450045, China)

  • Juan Zhen

    (College of Energy and Power Engineering, North China University of Water Resources and Electric Power, Zhengzhou 450045, China
    Cscec Scimee Sci.& Tech. Co., Ltd., Chengdu 610045, China)

  • Weishu Wang

    (College of Energy and Power Engineering, North China University of Water Resources and Electric Power, Zhengzhou 450045, China)

  • Yan Peng

    (Citic Heavy Industries Co., Ltd., Louyang 471039, China)

  • Boyan Tian

    (College of Energy and Power Engineering, North China University of Water Resources and Electric Power, Zhengzhou 450045, China)

  • Yushuai Ruan

    (College of Energy and Power Engineering, North China University of Water Resources and Electric Power, Zhengzhou 450045, China)

  • Renjie Li

    (College of Energy and Power Engineering, North China University of Water Resources and Electric Power, Zhengzhou 450045, China)

Abstract

In order to explore the law of gas–solid countercurrent cooling heat transfer in a vertical sinter cooling furnace at a high temperature, based on the Euler model and the local non-thermodynamic equilibrium theory, an exergy efficiency model was built to evaluate the heat transfer process in the vertical sinter cooling furnace with different parameter changes. It was found that the inlet temperature of cooling air and sinter inlet temperature are the main factors affecting the temperature field and gas–solid heat transfer characteristics in the furnace. Under the conditions of each parameter, the cooling air temperature presents a radial “M” shape distribution. The axial cooling section is the most intense area of gas–solid heat transfer, and this part has the best heat transfer effect. When the inlet temperature of cooling air and the inlet temperature of sinter increase, the outlet temperature of sinter and the outlet temperature of cooling air increase. When the sinter equivalent diameter increases, the cooling air outlet temperature decreases gradually, while the sinter outlet temperature increases gradually. When the diameter and height of the cooling section increase, respectively, the outlet temperature of the sinter decreases and the outlet temperature of the cooling air increases. Based on dimensional analysis, the heat transfer correlation formula suitable for certain test conditions is obtained.

Suggested Citation

  • Weihui Xu & Qinbao Wang & Juan Zhen & Weishu Wang & Yan Peng & Boyan Tian & Yushuai Ruan & Renjie Li, 2024. "A Study of a Two-Phase Heat Transfer Mechanism in a Vertical Sintering Cooling Furnace," Energies, MDPI, vol. 17(3), pages 1-24, February.
  • Handle: RePEc:gam:jeners:v:17:y:2024:i:3:p:761-:d:1333948
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