混合制冷剂蒸气冷凝换热计算  

Investigation on Condensation of Mixture Refrigerants

作　　者：冯健美[1] 屈宗长[1] 王迪生[1] 张强[2] 

机构地区：[1]西安交通大学 [2]西安建筑科技大学

出　　处：《流体机械》2001年第1期56-58,共3页Fluid Machinery

摘　　要：对混合工质凝结换热系数常用的三种计算方法作了分析比较 ,同时利用收集到的混合工质局部凝结换热系数的实验数据 ,对文献中给出的计算式以及用Bell-Ghaly法计算的准确度作了对比 ,得出了在工程实际应用中采用Bell-Ghaly法时 。Three methods of calculating condensation heat transfer coefficient of mixture refrigerants were compared. It was presented that the technique of gaseous heat resistance was suitable for the engineering application. The other formulae in literatures and the technique of gaseous heat resistance were separately compared with the experiment data. The results show that the technique of gaseous heat resistance is better than the other formulae, where liquid film heat resistance can be more accurately calculated by modified Shah formula.

关 键 词：局部换热系数 混合工质 冷凝 混合制冷剂 

分 类 号：TB612[一般工业技术—制冷工程]