Analysis of air-steam condensation tests on a vertical tube of the passive containment cooling system under natural convection

被引：10

作者：

Lee, Yeon-Gun ^{[1
]}

Jang, Yeong-Jun ^{[1
]}

Kim, Sin ^{[2
]}

机构：

[1] Jeju Natl Univ, Dept Nucl & Energy Engn, 102 Jejudaehakno, Jeju Si 63243, Jeju, South Korea

[2] Chung Ang Univ, Sch Energy Syst Engn, 84 Heukseok Ro, Seoul 06974, South Korea

来源：

ANNALS OF NUCLEAR ENERGY | 2019年 / 131卷

基金：

新加坡国家研究基金会;

关键词：

Passive containment cooling system; Air-steam condensation; Natural convection; Condensation heat transfer coefficient; Heat and mass transfer analogy; Condensate rate; HEAT-TRANSFER; MASS-TRANSFER; NONCONDENSABLES; SURFACE; GASES;

D O I：

10.1016/j.anucene.2019.04.001

中图分类号：

TL [原子能技术]; O571 [原子核物理学];

学科分类号：

0827 ; 082701 ;

摘要：

This paper presents an analytical study of the air-steam condensation on a vertical tube of a passive containment cooling system under natural convection conditions. From JNU (Jeju National University) condensation tests, the heat transfer coefficient (HTC) of steam condensation in the presence of air was measured on an outer surface of a cylindrical tube of 40 mm in outer diameter and 1.0 m in length. Using the experimental results from the JNU tests and those obtained in MIT, TIT, and UW-Madison, the validity of empirical correlations to determine condensation HTCs on condenser tubes with different lengths was evaluated. In addition, the mechanistic models using the heat and mass transfer analogy were applied to calculate the condensate rate of air-steam mixture. Combined with a couple of empirical heat transfer expressions for heat and mass transfer analogy, three different formulations to compute the vapor mass flux were applied and their prediction results were compared to the experimental results by JNU tests and MIT tests. The experimentally determined Sherwood number was also presented for both experiments, provided one employs the Collier/Stephan modeling to calculate the mass transfer rate by air-steam condensation. (C) 2019 Published by Elsevier Ltd.

引用

页码：460 / 474

页数：15

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