Analysis of Heat Transfer Characteristics of Natural Convection Condensation of Steam Containing Air under Different Tube Bundle Arrangements

Liu Le; Chen Wenzhen; Wang Jue; Wang Cong; Hu Chen

doi:10.13832/j.jnpe.2022.03.0094

Volume 43 Issue 3

Jun. 2022

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Liu Le, Chen Wenzhen, Wang Jue, Wang Cong, Hu Chen. Analysis of Heat Transfer Characteristics of Natural Convection Condensation of Steam Containing Air under Different Tube Bundle Arrangements[J]. Nuclear Power Engineering, 2022, 43(3): 94-100. doi: 10.13832/j.jnpe.2022.03.0094

Citation:

Liu Le, Chen Wenzhen, Wang Jue, Wang Cong, Hu Chen. Analysis of Heat Transfer Characteristics of Natural Convection Condensation of Steam Containing Air under Different Tube Bundle Arrangements[J]. Nuclear Power Engineering, 2022, 43(3): 94-100. doi: 10.13832/j.jnpe.2022.03.0094

Citation:

Liu Le, Chen Wenzhen, Wang Jue, Wang Cong, Hu Chen. Analysis of Heat Transfer Characteristics of Natural Convection Condensation of Steam Containing Air under Different Tube Bundle Arrangements[J]. Nuclear Power Engineering, 2022, 43(3): 94-100. doi: 10.13832/j.jnpe.2022.03.0094

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Analysis of Heat Transfer Characteristics of Natural Convection Condensation of Steam Containing Air under Different Tube Bundle Arrangements

doi: 10.13832/j.jnpe.2022.03.0094

Liu Le^{1, 2
,},
Chen Wenzhen^{1
,
,},
Wang Jue^{1, 2},
Wang Cong²,
Hu Chen²

1.
Department of Nuclear Energy Science and Engineering, Naval University of Engineering, Wuhan, 430033, China
2.
Wuhan Second Ship Design and Research Institute, Wuhan, 430064, China

Received Date: 2021-04-15
Accepted Date: 2021-07-07
Rev Recd Date: 2021-07-08
Publish Date: 2022-06-07

Abstract

Abstract

In order to study the effect of tube bundle arrangement of heat exchanger in passive containment cooling system (PCCS) on the condensation heat transfer characteristics of steam containing air under natural convection conditions, the condensation heat transfer process in channels of single tube, single-row to five-row tube bundles is numerically studied by coupling gas component transport equation and condensation model. It is found that there is a “inhibiting effect” that reduces the condensation heat transfer capacity due to the interference of high-concentration air layers between tube bundles, and a “suction effect” that strengthens the condensation capacity on the wall due to the transverse flow of gas caused by water vapor wall condensation. The influence of such two effects on condensation heat transfer under different tube bundle structures is analyzed. The results show that with the increase of the number of rows of tube bundles, the influence of the two effects on the condensation heat transfer gradually increases, leading to the increase of non-uniformity of circumferential local condensation heat transfer capacity of condensing tubes. Among them, the maximum circumferential local condensation heat transfer coefficient (HTC) of five-row tube bundles is 2.3 times that of single tube, and the minimum is only 44.7% of that of single tube. In the double-row, three-row and four-row tube bundles, the condensation heat transfer capacity of the regular quadrilateral arrangement is better than that of the regular triangle arrangement, while in the five-row tube bundle, the condensation heat transfer capacity of the regular triangle arrangement is stronger. This study can provide a technical reference for the optimization of the tube bundle arrangement of the PCCS heat exchanger.
- Natural convection,
- Tube bundle,
- Steam condensation,
- Component transport model,
- Numerical simulation

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References(9)

References

[1]	陈文振, 于雷, 郝建立. 核动力装置热工水力[M]. 北京: 中国原子能出版社, 2013: 12-13.
[2]	ZSCHAECK G, FRANK T, BURNS A D. CFD modelling and validation of wall condensation in the presence of non-condensable gases[J]. Nuclear Engineering and Design, 2014, 279: 137-146. doi: 10.1016/j.nucengdes.2014.03.007
[3]	FU W, LI X W, WU X X, et al. Numerical investigation of convective condensation with the presence of non-condensable gases in a vertical tube[J]. Nuclear Engineering and Design, 2016, 297: 197-207. doi: 10.1016/j.nucengdes.2015.11.034
[4]	宿吉强,孙中宁,张东洋. 含空气蒸汽冷凝数值计算模型建立与模拟[J]. 原子能科学技术,2014, 48(7): 1188-1193. doi: 10.7538/yzk.2014.48.07.1188
[5]	全标,边浩志,丁铭,等. 竖直管束外含空气蒸汽冷凝传热特性数值分析[J]. 核动力工程,2019, 40(5): 29-34.
[6]	DEHBI A, JANASZ F, BELL B. Prediction of steam condensation in the presence of noncondensable gases using a CFD-based approach[J]. Nuclear Engineering and Design, 2013, 258: 199-210. doi: 10.1016/j.nucengdes.2013.02.002
[7]	CHENG X, BAZIN P, CORNET P, et al. Experimental data base for containment thermalhydraulic analysis[J]. Nuclear Engineering and Design, 2001, 204(1-3): 267-284. doi: 10.1016/S0029-5493(00)00311-3
[8]	边浩志,孙中宁,丁铭,等. 含空气蒸汽冷凝换热特性的数值模拟分析[J]. 哈尔滨工程大学学报,2019, 40(2): 426-432.
[9]	BIAN H Z, SUN Z N, CHENG X, et al. CFD evaluations on bundle effects for steam condensation in the presence of air under natural convection conditions[J]. International Communications in Heat and Mass Transfer, 2019, 98: 200-208.