Analysis of steam condensation characteristics in the presence of air outside the ring fin tube bundles

被引：0

作者：

Gao L. ^{[1
]}

Li W. ^{[2
,3
]}

Mao Y. ^{[1
]}

Zhang C. ^{[1
]}

Li L. ^{[1
]}

机构：

[1] China Nuclear Engineering Consulting Co., Ltd., Beijing

[2] College of Nuclear Science and Technology, Harbin Engineering University, Harbin

[3] Heilongjiang Provincial Key Laboratory of Nuclear Power System & Equipment, Harbin Engineering University, Harbin

来源：

Harbin Gongcheng Daxue Xuebao/Journal of Harbin Engineering University | 2023年 / 44卷 / 07期

关键词：

condensation; heat transfer; heat transfer enhancement; numerical simulation; passive containment heat removal system (PCS); ring fin tube; steam condensation in the presence of air; tube bundles;

D O I：

10.11990/jheu.202304008

中图分类号：

学科分类号：

摘要：

Steam condensation in the presence of air outside the tubes is the key heat transfer process of the passive containment heat removal system. A study of enhanced heat transfer outside the tube bundle is required to improve the heat transfer efficiency of the heat exchanger. In this paper, the ring fin enhanced heat exchange tube is combined with a tube bundle, and its effect on condensation heat transfer is investigated by numerical simulation using the CFD software. The results revealed that the arrangement of the ring fins and the spacing between tubes influence heat transfer. The heat transfer coefficient can be increased by up to 28% as compared to bare tube bundles by a staggered arrangement of ring fins. With different ring fin arrangements, the heat transfer considerably varied, and the heat transfer coefficient exhibited a variation of up to 18%. Tube spacing affects the fin height, thus affecting the strengthening effect. A reasonable setting of the ring fins allowed a considerably improved heat exchange of the tube bundle and thus provided a basis for the optimization of the design of heat exchangers. © 2023 Editorial Board of Journal of Harbin Engineering. All rights reserved.

引用

页码：1201 / 1207

页数：6

共 18 条

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