Numerical Study on Corrosion and Heat Transfer Coupling Characteristics of Heat Exchange Tube in LBE Environment

Wang Yifeng; Peng Tianji; Fan Xukai; Tian Wangsheng; Tang Yanze; Meng Haiyan

doi:10.13832/j.jnpe.2025.S1.0228

Volume 46 Issue S1

Jul. 2025

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Wang Yifeng, Peng Tianji, Fan Xukai, Tian Wangsheng, Tang Yanze, Meng Haiyan. Numerical Study on Corrosion and Heat Transfer Coupling Characteristics of Heat Exchange Tube in LBE Environment[J]. Nuclear Power Engineering, 2025, 46(S1): 228-236. doi: 10.13832/j.jnpe.2025.S1.0228

Citation:

Wang Yifeng, Peng Tianji, Fan Xukai, Tian Wangsheng, Tang Yanze, Meng Haiyan. Numerical Study on Corrosion and Heat Transfer Coupling Characteristics of Heat Exchange Tube in LBE Environment[J]. Nuclear Power Engineering, 2025, 46(S1): 228-236. doi: 10.13832/j.jnpe.2025.S1.0228

Citation:

Wang Yifeng, Peng Tianji, Fan Xukai, Tian Wangsheng, Tang Yanze, Meng Haiyan. Numerical Study on Corrosion and Heat Transfer Coupling Characteristics of Heat Exchange Tube in LBE Environment[J]. Nuclear Power Engineering, 2025, 46(S1): 228-236. doi: 10.13832/j.jnpe.2025.S1.0228

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Numerical Study on Corrosion and Heat Transfer Coupling Characteristics of Heat Exchange Tube in LBE Environment

doi: 10.13832/j.jnpe.2025.S1.0228

Wang Yifeng^1
,,
Peng Tianji^{1, 2, 3, 4
,
,},
Fan Xukai^{1, 2, 4},
Tian Wangsheng^{1, 2, 4},
Tang Yanze^{1, 2, 3, 4},
Meng Haiyan^{1, 2, 4}

1.
Advanced Energy Science and Technology Guangdong Laboratory, Huizhou, Guangdong, 516000, China
2.
Institute of Modern Physics, Chinese Academy of Sciences, Lanzhou, 730000, China
3.
University of Chinese Academy of Sciences, Beijing, 100049, China
4.
Huizhou Ion Science Research Center, Huizhou, Guangdong, 516000, China

Received Date: 2024-01-03
Rev Recd Date: 2025-01-20

Available Online: 2025-07-09

Publish Date: 2025-06-15

Abstract

Abstract

In order to study the phenomenon of oxidation corrosion in LBE heat exchange tube and the effect of oxide layer growth on heat transfer, this study simulates the corrosion and heat transfer process of LBE heat exchange tube in 9500 hours based on the oxidation corrosion model, mass transfer controlled corrosion model and oxide layer thermal resistance model by using the FLUENT in combination with the user-defined function (UDF). The results show that after 9500 hours of operation under baseline conditions, the average thickness of the magnetite and spinel layers reached 23.84 μm and 25.02 μm, respectively. Due to the additional thermal resistance introduced by the oxide layer growth, the average thermal resistance of the wall increased by 7.8%, and the wall temperature and outlet temperature of the heat exchange tube increased by 0.26 K and 0.2 K, respectively. The lower the inlet temperature, the smaller the thickness of the oxide layer is. However, the oxide layer thickness gradually increases with time, indicating that the oxidation layer growth process plays a dominant role compared to the removal process. The lower the inlet oxygen concentration, the smaller the thickness of the oxide layer is. When the oxygen concentration is reduced to 10⁻⁷ wt%, the magnetite layer at the inlet of the heat exchange tube appears local dissolution, and the scope of dissolution gradually expands. The spinel layer, on the other hand, continues to grow after exposure to LBE due to low removal rate and provides the main protection for the structural material.

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References(18)

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