“Chen”型沸腾传热计算方法用于小通道传热计算的适应性  

Applicability of "Chen" Type Methods for Predicting Boiling Heat Transfer in Mini-Channels

作　　者：于凯秋[1] 孙立成[1] 阎昌琪[1] 

机构地区：[1]哈尔滨工程大学核能科学与技术学院,哈尔滨150001

出　　处：《核动力工程》2010年第S1期24-28,共5页Nuclear Power Engineering

基　　金：哈尔滨工程大学校内基金项目(HEUF0126)

摘　　要：目前,计算沸腾传热最为常用的Chen公式和基于Chen公式的计算方法在用于小通道时计算误差较大。运用Yan和Lin等人的实验结果,建立了一个包含11种工质,当量直径在0.21～6.05mm区间,由2505个实验数据组成的数据库,对Chen公式和"Chen"型计算方法用于小通道传热计算的适用性进行了评价。对比分析结果表明:Chen方法和"Chen"型计算方法误差较大,Chen公式中核态沸腾传热系数的计算方法在高含气率区已经不再适用。Chen correlation and other correlations based on Chen correlation are the most commonly used methods for predicting the flow boiling heat transfer. However,some recent researches show that great errors are caused when these correlations are used for mini-channels. Based the experimental results from Yan and Lin et al.,a new database including 2505 data for 11 liquids were built,covering diameter from 0.21 to 6.05mm. The applicability of these methods for prediction of the flow boiling heat transfer in mini-channels was evaluated. The results show that the Chen method and the Chen-type correlations are not quite suitable for mini-channels; the correlation for calculating the nucleate boiling heat transfer coefficient in Chen correla-tion is no longer applicable when the vapor quality is high.

关 键 词：小通道 饱和沸腾 评价 

分 类 号：TK124[动力工程及工程热物理—工程热物理]