典型文献
Numerical analysis of heat transfer enhancement on steam condensation in the presence of air outside the tube
文献摘要：
In loss-of-coolant accidents,a passive contain-ment heat removal system protects the integrity of the containment by condensing steam.As a large amount of air exists in the containment,the steam condensation heat transfer can be significantly reduced.Based on previous research,traditional methods for enhancing pure steam condensation may not be applicable to steam-air conden-sation.In the present study,new methods of enhancing condensation heat transfer were adopted and several potentially enhanced heat transfer tubes,including corru-gated tubes,spiral fin tubes,and ring fin tubes were designed.STAR-CCM+was used to determine the effect of enhanced heat transfer tubes on the steam condensation heat transfer.According to the calculations,the gas pres-sure ranged from 0.2 to 1.6 MPa,and air mass fraction ranged from 0.1 to 0.9.The effective perturbation of the high-concentration air layer was identified as the key factor for enhancing steam-air condensation heat transfer.Fur-ther,the designed corrugated tube performed well at atmospheric pressure,with a maximum enhancement of 27.4％,and performed poorly at high pressures.In the design of spiral fin tubes,special attention should be paid to the locations that may accumulate high-concentration air.Nonetheless,the ring-fin tubes generally displayed good performance under all conditions of interest,with a maximum enhancement of 24.2％.
文献关键词：
中图分类号：
作者姓名：
Wen-Tao Li;Xian-Ke Meng;Hao-Zhi Bian;Ming Ding
作者机构：
Heilongjiang Provincial Key Laboratory of Nuclear Power System and Equipment,Harbin Engineering University,Harbin 150001,China;China Nuclear Engineering Consulting Co.,Ltd.,Beijing 100073,China
文献出处：
引用格式：
[1]Wen-Tao Li;Xian-Ke Meng;Hao-Zhi Bian;Ming Ding-.Numerical analysis of heat transfer enhancement on steam condensation in the presence of air outside the tube)[J].核技术（英文版）,2022(08):55-68
A类：
condensing,conden,corru,CCM+was
B类：
Numerical,analysis,heat,transfer,enhancement,steam,condensation,presence,air,outside,In,loss,coolant,accidents,passive,removal,system,protects,integrity,containment,by,large,amount,exists,significantly,reduced,Based,previous,research,traditional,methods,enhancing,pure,may,not,applicable,present,study,new,were,adopted,several,potentially,enhanced,tubes,including,spiral,fin,ring,designed,STAR,used,determine,According,calculations,gas,ranged,from,mass,fraction,effective,perturbation,high,concentration,layer,identified,key,Fur,ther,corrugated,performed,well,atmospheric,maximum,poorly,pressures,special,attention,should,paid,locations,that,accumulate,Nonetheless,generally,displayed,good,performance,under,conditions,interest
AB值：
0.440029
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