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Coupled Model of Heat and Mass Balance for Droplet Growth in Wet Steam Non-Equilibrium Homogeneous Condensation Flow

Author

Listed:
  • Xu Han

    (Key Lab of Condition Monitoring and Control for Power Plant Equipment, North China Electric Power University, Ministry of Education, Baoding 071003, China)

  • Zhonghe Han

    (Key Lab of Condition Monitoring and Control for Power Plant Equipment, North China Electric Power University, Ministry of Education, Baoding 071003, China)

  • Wei Zeng

    (Key Lab of Condition Monitoring and Control for Power Plant Equipment, North China Electric Power University, Ministry of Education, Baoding 071003, China)

  • Jiangbo Qian

    (Key Lab of Condition Monitoring and Control for Power Plant Equipment, North China Electric Power University, Ministry of Education, Baoding 071003, China
    Research Institute of BIT in Zhongshan, Zhongshan 528400, China)

  • Zhi Wang

    (Key Lab of Condition Monitoring and Control for Power Plant Equipment, North China Electric Power University, Ministry of Education, Baoding 071003, China)

Abstract

Because of the complexity of wet steam two-phase condensation flow, many problems remain to be solved. The important part of condensation theory—the calculation of the water droplet growth model in the transition zone—is not ideal; thus, it is necessary to develop a water droplet growth model with full-scale range. On the basis of the heat and mass transfer equilibrium in droplet growth, a coupled model of heat and mass balance for droplet growth is proposed. To verify the accuracy of this model, the differences and applicable ranges of various models were analysed using the experimental data of Peters and Meyer and two widely used models. In the free molecular flow region, the heat and mass balance model coincides with the Young low-pressure correction model. In the transition region, the heat and mass balance model agrees well with the experimental values of Peters and Meyer. In the continuous flow region, the heat and mass balance model coincides with the Gyarmathy model. Therefore, the heat and mass balance model can be used to accurately describe the growth process of water droplets in the arbitrary range of Knudsen numbers.

Suggested Citation

  • Xu Han & Zhonghe Han & Wei Zeng & Jiangbo Qian & Zhi Wang, 2017. "Coupled Model of Heat and Mass Balance for Droplet Growth in Wet Steam Non-Equilibrium Homogeneous Condensation Flow," Energies, MDPI, vol. 10(12), pages 1-12, December.
    • Handle: RePEc:gam:jeners:v:10:y:2017:i:12:p:2033-:d:121317
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    References listed on IDEAS

    as
    1. Hanak, D.P. & Kolios, A.J. & Biliyok, C. & Manovic, V., 2015. "Probabilistic performance assessment of a coal-fired power plant," Applied Energy, Elsevier, vol. 139(C), pages 350-364.
    2. Edris Yousefi Rad & Mohammad Reza Mahpeykar, 2017. "A Novel Hybrid Approach for Numerical Modeling of the Nucleating Flow in Laval Nozzle and Transonic Steam Turbine Blades," Energies, MDPI, vol. 10(9), pages 1-37, August.
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    Cited by:

    1. Jie Wang & Hongfang Gu, 2021. "A Study of Moist Air Condensation Characteristics in a Transonic Flow System," Energies, MDPI, vol. 14(13), pages 1-12, July.
    2. Han, Xu & Zeng, Wei & Han, Zhonghe, 2019. "Investigation of the comprehensive performance of turbine stator cascades with heating endwall fences," Energy, Elsevier, vol. 174(C), pages 1188-1199.
    3. Yali Guo & Run Wang & Denghui Zhao & Luyuan Gong & Shengqiang Shen, 2023. "Numerical Simulation of Vapor Dropwise Condensation Process and Droplet Growth Mode," Energies, MDPI, vol. 16(5), pages 1-22, March.

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