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Sodium-Potassium Alloy Heat Pipe under Geyser Boiling Experimental Study: Heat Transfer Analysis

Author

Listed:
  • Hongzhe Zhang

    (MOE Key Laboratory of Enhanced Heat Transfer and Energy Conservation, Beijing Key Laboratory of Heat Transfer and Energy Conversion, College of Energy and Power Engineering, Beijing University of Technology, Beijing 100124, China)

  • Fang Ye

    (MOE Key Laboratory of Enhanced Heat Transfer and Energy Conservation, Beijing Key Laboratory of Heat Transfer and Energy Conversion, College of Energy and Power Engineering, Beijing University of Technology, Beijing 100124, China)

  • Hang Guo

    (MOE Key Laboratory of Enhanced Heat Transfer and Energy Conservation, Beijing Key Laboratory of Heat Transfer and Energy Conversion, College of Energy and Power Engineering, Beijing University of Technology, Beijing 100124, China)

  • Xiaoke Yan

    (National Institute of Metrology, Beijing 100013, China)

Abstract

In the geyser boiling mode, the working fluid state is divided into a boiling process and a quiet process, and the sodium-potassium (Na-K) alloy heat pipe can discontinuously transfer heat at each boiling. The overheating of the liquid working fluid at the bottom causes short-term boiling and forms slug bubble, the strong condensing ability quickly conducts heat from the evaporator section. And geyser boiling can occur before the working fluid forms continuous flow, so it transfers more heat at lower temperatures than natural convection cooling. In this study, the heat transfer process of a Na-K alloy heat pipe with forced convection cooling under different heating power was experimental studied. The geyser boiling mode can make the Na-K alloy heat pipe work below 650 °C and reduce the start-up time. In the process of geyser boiling, the heat transfer quantity was increased by the boiling frequency and the amount of vapor produced in a single boiling. The boiling temperature had no obvious change with the increased of heating power, and the condenser section temperature increased with the heating power.

Suggested Citation

  • Hongzhe Zhang & Fang Ye & Hang Guo & Xiaoke Yan, 2021. "Sodium-Potassium Alloy Heat Pipe under Geyser Boiling Experimental Study: Heat Transfer Analysis," Energies, MDPI, vol. 14(22), pages 1-15, November.
    • Handle: RePEc:gam:jeners:v:14:y:2021:i:22:p:7582-:d:678097
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    References listed on IDEAS

    as
    1. Hamidreza Behi & Mohammadreza Behi & Ali Ghanbarpour & Danial Karimi & Aryan Azad & Morteza Ghanbarpour & Masud Behnia, 2021. "Enhancement of the Thermal Energy Storage Using Heat-Pipe-Assisted Phase Change Material," Energies, MDPI, vol. 14(19), pages 1-19, September.
    2. Hamidreza Behi & Theodoros Kalogiannis & Mahesh Suresh Patil & Joeri Van Mierlo & Maitane Berecibar, 2021. "A New Concept of Air Cooling and Heat Pipe for Electric Vehicles in Fast Discharging," Energies, MDPI, vol. 14(20), pages 1-15, October.
    3. Jing Chen & Junbiao Dong & Ye Yao, 2021. "Experimental Study on the Starting-Up and Heat Transfer Characteristics of a Pulsating Heat Pipe under Local Low-Frequency Vibrations," Energies, MDPI, vol. 14(19), pages 1-15, October.
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    Cited by:

    1. Li Ge & Huaqi Li & Xiaoyan Tian & Zeyu Ouyang & Xiaoya Kang & Da Li & Jianqiang Shan & Xinbiao Jiang, 2022. "Improvement and Validation of the System Analysis Model and Code for Heat-Pipe-Cooled Microreactor," Energies, MDPI, vol. 15(7), pages 1-22, April.
    2. Hongzhe Zhang & Fang Ye & Hang Guo & Xiaoke Yan, 2022. "Isothermal Performance of Heat Pipes: A Review," Energies, MDPI, vol. 15(6), pages 1-16, March.

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