Experimental Study on Pool Boiling Heat Transfer of Cr-coated Zirconium Cladding

Zeng Xiehu; Chen Zhiqiang; Wen Qinglong; Du Qiang; Zhang Ruiqian; Du Peinan

doi:10.13832/j.jnpe.2023.02.0091

Volume 44 Issue 2

Apr. 2023

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Zeng Xiehu, Chen Zhiqiang, Wen Qinglong, Du Qiang, Zhang Ruiqian, Du Peinan. Experimental Study on Pool Boiling Heat Transfer of Cr-coated Zirconium Cladding[J]. Nuclear Power Engineering, 2023, 44(2): 91-97. doi: 10.13832/j.jnpe.2023.02.0091

Citation:

Zeng Xiehu, Chen Zhiqiang, Wen Qinglong, Du Qiang, Zhang Ruiqian, Du Peinan. Experimental Study on Pool Boiling Heat Transfer of Cr-coated Zirconium Cladding[J]. Nuclear Power Engineering, 2023, 44(2): 91-97. doi: 10.13832/j.jnpe.2023.02.0091

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Experimental Study on Pool Boiling Heat Transfer of Cr-coated Zirconium Cladding

doi: 10.13832/j.jnpe.2023.02.0091

Zeng Xiehu^{1, 2
,},
Chen Zhiqiang^{1, 3},
Wen Qinglong^{1, 2
,
,},
Du Qiang^{1, 2},
Zhang Ruiqian⁴,
Du Peinan⁴

1.
Department of Nuclear Engineering and Technology, School of Energy and Power Engineering, Chongqing University, Chongqing, 400044, China
2.
Key Laboratory of Low-Grade Energy Utilization Technologies and Systems, Ministry of Education, Chongqing University, Chongqing, 400044, China
3.
DEC Academy of Science and Technology Co., Ltd., Chengdu, 611731, China
4.
Nuclear Power Institute of China, Chengdu, 610213, China

Received Date: 2022-04-17
Rev Recd Date: 2022-05-30
Publish Date: 2023-04-15

Abstract

Abstract

Chromium (Cr) coated zirconium alloy cladding is considered as one of the most promising cladding materials for accident tolerant fuel (ATF). The degree of influence of the surface state of this material on the heat transfer performance will greatly affect the process optimization direction of coated zirconium cladding. In this paper, experiments are conducted on the Cr-coated zirconium alloy claddings prepared under atmospheric pressure in the pool boiling experimental device for Cr-coated zirconium alloy cladding. The influence law and mechanism of surface states such as roughness on heat transfer are studied. The results show that the improvement of surface roughness can reduce the conditions for the formation of vaporization core and significantly enhance heat transfer under the same wall superheat degree. Within the range of parameters studied in this paper, with the increase of heat transfer surface roughness, CHF shows an upward trend accordingly. Increasing the surface roughness can effectively improve the CHF value. On this basis, the prediction relational expression of the influence of roughness on heat transfer coefficient is also developed in this paper.
- Accident tolerant fuel (ATF),
- Chromium (Cr) coated zirconium alloy cladding,
- Roughness,
- Boiling curve,
- Critical heat flux

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References

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