三角形微通道饱和沸腾传热系数的预测  

Prediction of Saturated Boiling Heat Transfer Coefficient in Triangular Cross-section Microchannel

作　　者：董静兰[1] 刘雄伟[1] 刘彦丰[1] 宗露香[1] DONG Jing-lan;LIU Xiong-wei;LIU Yan-feng;ZONG Lu-xiang(School of Energy Power and Mechanical Engineering,North China Electric Power University,Baoding,China,Post Code ： 071003)

机构地区：[1]华北电力大学能源动力与机械工程学院

出　　处：《热能动力工程》2018年第7期7-11,共5页Journal of Engineering for Thermal Energy and Power

摘　　要：基于以丙酮为工质的三角形截面微通道饱和沸腾传热的实验数据,通过最小二乘法对实验数据进行参数拟合,得到一组新的经验参数,结合Thome提出的预测圆形截面微通道饱和沸腾传热系数的三区模型,对微通道饱和沸腾的传热系数进行了预测。结果表明：该三区模型可以较好地预测出传热系数随着干度的变化趋势,并得到90.04%的实验值和预测值误差在30%之内,吻合度较好。Based on experimental data of saturated boiling heat transfer in triangular cross-section micro- channels using acetone as the working medium. A new set of empirical parameters was obtained via pa- rameter fitting with the least squares method. With the prediction method, three-zone model for the circular cross-section michrochannels proposed by Thome, the saturated boiling heat transfer coefficient of triangular cross-section microchannels was predicted. The results showed that the three-zone model can predict the trend of the heat transfer coefficient with the dryness, and the 90.04% of experimental values and the predicted values has an error within 30% ,indicating good agreement.

关 键 词：微通道 沸腾传热 三角形截面 三区模型 

分 类 号：TK512.4[动力工程及工程热物理—热能工程]