狭缝中流动沸腾传热过冷沸腾起始点的实验研究  

Investigation of subcooled boiling incipience in flow boiling heat transfer through narrow channels

作　　者：苏顺玉[1] 王晓墨[1] 黄素逸[1] 

机构地区：[1]华中科技大学能源与动力工程学院,湖北武汉430074

出　　处：《热科学与技术》2004年第2期104-107,共4页Journal of Thermal Science and Technology

基　　金：国家自然科学基金资助项目 ( 5 0 0 760 14 );国家重点基础研究发展规划项目 ( G2 0 0 0 0 2 63 0 3 )

摘　　要：以间隙为 1 .0 mm和 1 .5 mm的环形狭缝通道中流动沸腾传热的实验数据为基础 ,分析了影响过冷沸腾起始点热负荷的主要因素 ,给出了计算环形狭缝通道中流动沸腾传热过冷沸腾起始点的经验关联式 ,并将计算结果与实验值进行了比较。该关联式可以用来预测实验范围内的过冷沸腾起始点的热负荷。The main factors affecting the heat flux of the onset of nucleate boiling q ONB were analyzed, based on the experimental data of flow boiling heat transfer in narrow annular channels with 1.0 mm and 1.5 mm of the gap sizes. The empirical correlation for calculating subcooled boiling incipience in flow boiling heat transfer through narrow annular channels was obtained. Comparison of the experimental and calculating results indicates that the empirical correlation could be used to predict the heat flux of the onset of nucleate boiling within the range of the experiments.

关 键 词：狭缝 过冷沸腾 起始点 经验关联式 传热学 传热系数 

分 类 号：TK124[动力工程及工程热物理—工程热物理]