窄矩形通道内过冷度与淹没速度对最小膜态沸腾温度的影响研究  

Experimental Investigation on Effect of Subcooling and Reflooding Velocity on Minimum Film Boiling Temperature in Narrow Rectangular Channels during Reflooding

作　　者：董克坚 刘汉周[1] 刘海东[2] 吴丹[3] 陈德奇[1] Dong Kejian;Liu Hanzhou;Liu Haidong;Wu Dan;Chen Deqi(Key Laboratory of Low-Grade Energy Utilization Technologies and Systems,Chongqing University,Chongqing,400044,China;School of Energy Science and Engineering,Harbin Institute of Technology,Harbin,150001,China;Nuclear Power Institute of China,Chengdu,610213,China)

机构地区：[1]重庆大学低品位能源利用技术及系统教育部重点实验室,重庆400044 [2]哈尔滨工业大学能源科学与工程学院,哈尔滨150001 [3]中国核动力研究设计院,成都610213

出　　处：《核动力工程》2021年第S01期88-92,共5页Nuclear Power Engineering

基　　金：新型燃料元件LOCA条件下复杂行为及安全特性研究(U1867219)。

摘　　要：为研究窄矩形通道内过冷度与淹没速度(Uin)对最小膜态沸腾点(MFBP)的影响,开展了常压下窄矩形通道底部再淹没实验。基于不同工况下再淹没过程中加热板的温度变化曲线,采用温度-时间变化斜率11℃/s作为MFBP的判定依据,分析了过冷度与Uin对最小膜态沸腾温度(Tmin)和骤冷速度的影响;对Tmin实验值与典型关系式计算值进行了对比分析。实验结果表明:Tmin与骤冷速度随着过冷度及Uin的增大而增大,但在高Uin下对其影响减弱;Henry关系式计算值与实验值误差在±10%以内,而Peterson&Bajorek关系式计算结果偏高。A bottom reflooding experiment in narrow rectangular channels is carried out to investigate the effect of the subcooling and reflooding velocity(Uin)on the minimum film boiling point(MFBP)at atmospheric pressure.In this paper,based on the temperature variation curves of the heating plate during reflooding and the standard definition of minimum film boiling point,the derivative of temperature versus time reaching 11℃/s,the effect of subcooling and Uin on minimum film boiling temperature(Tmin)and quench velocity is analyzed.A comparison between experimental Tmin and calculated values is made.The results show that Tmin and quench velocity will increase with the subcooling and Uin,while the effect is mild for high Uin.The error between experimental Tmin and calculated Tmin by Henry correlation is within±10%,while the values calculated by Peterson&Bajorek correlation are overvalued.

关 键 词：窄矩形通道 最小膜态沸腾点(MFBP) 过冷度 淹没速度 

分 类 号：TL334[核科学技术—核技术及应用]