二氧化碳管内沸腾换热系数关联式的分析  

Analysis of heat transfer correlation for CO_2 in-tube flow boiling

作　　者：杨建超[1] 柳建华[1] 张良[1] 葛琪林[1] 张海江[1] 朱立伟[1] 

机构地区：[1]上海理工大学能源与动力工程学院,上海200093

出　　处：《低温与超导》2011年第11期72-76,共5页Cryogenics and Superconductivity

基　　金：高等学校博士学科点专项科研基金项目(2009320110003);上海市重点学科建设项目(S30503);上海高校选拔培养优秀青年教师科研专项基金(slg08002)

摘　　要：了解管内流动沸腾特性并准确地预测出其换热系数,对设计紧凑、高效的CO2蒸发换热器有着至关重要的作用。文中分析了几个国内外已公开发表的换热关联式,并将预测结果与实验数据进行对比和误差分析,比较后发现Yoon2004、Jung关联式的预测精度相对较高,但各关联式对干涸后的换热系数预测普遍有较大偏差,有待进一步的改进。Understanding intube flow boiling heat transfer character and precisely predicting of its heat transfer are essential in the design of a compact and efficient evaporator for CO2.Several heat transfer correlations of CO2 published in abroad were analysed in this article.It is found that precisions of Yoon2004 and Jung correlation are relatively higher,however correlations need to be improved for their predictive values have large deviation between the experimental values in the prediction of post-dryout heat transfer.

关 键 词：管内流动沸腾 换热关联式 二氧化碳 干涸 

分 类 号：TB64[一般工业技术—制冷工程]