微通道内蒸汽冷凝摩擦压降的实验研究  

Experiment on Frictional Pressure Drop of Condensation in Microchannel

作　　者：宋天一[1,2] John W Rose 马学虎[1] 

机构地区：[1]大连理工大学化工学院化学工程研究所,大连116012 [2]Department of Engineering,Queen Mary,University of London

出　　处：《制冷学报》2010年第5期24-28,共5页Journal of Refrigeration

基　　金：国家自然科学基金(550776012)资助项目~~

摘　　要：通过实验测定了水蒸汽和FC-72在微通道内部的冷凝摩擦压降并与文献模型计算结果进行了对比。微通道由在铝块上的6条1mm×1.5mm平行矩形槽道组成,槽道间距为1.5mm。水蒸汽和FC-72的质量通量范围分别为80～200kg/(m2.s)和140～750kg/(m2.s)。实验结果表明,Koyama和Garimella模型可以较好地预测水蒸汽冷凝摩擦压降,而对于FC-72,Cavallini模型与本文测试结果更加吻合。The experiment was conducted to measue frictional pressure drop of steam and FC-72 condensation in microchannels, and the results measured were compared with the predictions in literature.The microchannels consisted of six parallel rectangular channels （each with 1 mm in width and 1.5 mm in depth）, and the space between each other was 1.5 mm.The mass flux ranges of steam and FC-72 were 80-200 kg.m-2.s-1 and 140-750 kg.m-2.s-1, respectively.It is likely that Koyama and Garimella models will predict the frictional pressure drop of steam condensation in microchannels reasonably, while the predictions by the Cavallini model agree better with the results measured for FC-72 in this study.

关 键 词：工程热物理 微通道冷凝 摩擦压降 模型预测 

分 类 号：TB657.5[一般工业技术—制冷工程] TQ051.5[化学工程]