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Investigation on Hydrodynamic Performance and Wall Temperature of Water-Cooled Wall in 1000 MW Boiler Under Low-Load Conditions

Author

Listed:
  • Peian Chong

    (Shanghai Power Equipment Research Institute Co., Ltd., Shanghai 200240, China)

  • Xiaolei Zhu

    (Shanghai Power Equipment Research Institute Co., Ltd., Shanghai 200240, China)

  • Jianning Li

    (Shanghai Power Equipment Research Institute Co., Ltd., Shanghai 200240, China)

  • Xiao Li

    (State Key Laboratory of Multiphase Flow in Power Engineering, School of Energy and Power Engineering, Xi’an Jiaotong University, Xi’an 710049, China)

  • Lei Deng

    (State Key Laboratory of Multiphase Flow in Power Engineering, School of Energy and Power Engineering, Xi’an Jiaotong University, Xi’an 710049, China)

Abstract

To enhance the peak-shaving capability of a boiler, a mathematical model of hydrodynamic and wall temperature characteristics for the water-cooled wall of a 1000 MW boiler was established. Utilizing the component pressure method, the mass flow distribution, outlet working fluid temperature, pressure loss, and wall temperature distribution characteristics of the water-cooled walls at 30% of the boiler’s maximum continuous rating (BMCR) were calculated and analyzed. The findings suggest that, under the operation at 30% BMCR load, there is a substantial equilibrium in the flow distribution across the quartet of walls that constitute the water-cooled wall assembly. The maximum mass flow rate deviations in the helical and vertical sections are 1.95% and 3.47%, respectively, showing small flow deviations and reasonable distribution. The temperature deviation in the helical section is 0.3 °C, reflecting the characteristic low thermal deviation in helical tubes. While the temperature deviation at the outlet of the vertical section is higher, it remains within safe limits. The pressure loss across the water-cooled wall system amounts to 0.4 MPa. The peak wall temperature reaches 337.5 °C, remaining within the material’s permissible safety limits. Through an in-depth performance analysis, the hydrodynamic operational safety under 30% BMCR deep peak-shaving load is ensured.

Suggested Citation

  • Peian Chong & Xiaolei Zhu & Jianning Li & Xiao Li & Lei Deng, 2024. "Investigation on Hydrodynamic Performance and Wall Temperature of Water-Cooled Wall in 1000 MW Boiler Under Low-Load Conditions," Energies, MDPI, vol. 17(22), pages 1-17, November.
    • Handle: RePEc:gam:jeners:v:17:y:2024:i:22:p:5751-:d:1523178
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    References listed on IDEAS

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    1. Xin Guo & Liangwei Xia & Guangbo Zhao & Guohua Wei & Yongjie Wang & Yaning Yin & Jianming Guo & Xiaohan Ren, 2022. "Steam Temperature Characteristics in Boiler Water Wall Tubes Based on Furnace CFD and Hydrodynamic Coupling Model," Energies, MDPI, vol. 15(13), pages 1-28, June.
    2. Ma, Dafu & Zhang, Shouyu & He, Xiang & Ding, Xian & Li, Wangfan & Liu, Pingyuan, 2024. "Combustion stability and NOx emission characteristics of three combustion modes of pulverized coal boilers under low or ultra-low loads," Applied Energy, Elsevier, vol. 353(PA).
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    Cited by:

    1. Lijun Sun & Miao Wang & Peian Chong & Yunhao Shao & Lei Deng, 2025. "Numerical Simulation of a 330 MW Tangentially Fired Boiler by a Model Coupling CFD and Hydrodynamic Calculation," Energies, MDPI, vol. 18(10), pages 1-19, May.

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