环保制冷剂管内流动沸腾摩擦压降模型研究  

Study on Flow Boiling Frictional Pressure Drop Model in Tubes of Environmentally Friendly Refrigerants

作　　者：闫子豪 李玲[1] 许玉[1] YAN Zi-hao;LI Ling;XU Yu(Key Laboratory of Aircraft Environment Control and Life Suppor,Ministry of Industry and Information Technology,Nanjing University of Aeronautics and Astronautics,Nanjing 210016,China)

机构地区：[1]南京航空航天大学飞行器环境控制与生命保障工业和信息化部实验室,江苏南京210016

出　　处：《管道技术与设备》2022年第2期6-14,共9页Pipeline Technique and Equipment

基　　金：国家自然科学基金(51806104);江苏省自然科学基金(BK20180426);航空科学基金(20182852024);中国博士后科学基金(2020M671487);江苏高校优势学科建设工程资助项目。

摘　　要：为了研究环保制冷剂管内流动沸腾摩擦压降模型的预测准确度,首先总结了12种管内流动沸腾摩擦压降模型,然后搜集了关于7种环保制冷剂在管径1~8 mm圆管内流动沸腾的962个实验数据点。通过对比模型预测值与实验数据,发现各模型的预测误差均较大,精度最高模型的平均绝对误差为31.6%,误差最大模型的平均绝对误差超过100%,表明现有模型并不能很好预测环保制冷剂沸腾换热摩擦压降。To explore prediction accuracy of flow boiling frictional pressure drop in tubes of environmentally friendly refriger⁃ants,this paper firstly summarized 12 flow boiling frictional pressure drop model in tubes,and then collected 962 flow boiling ex⁃perimental data points of 7 environmentally friendly refrigerants in circular tubes with pipe diameter of 1~8 mm.Through the comparisons between the model prediction and experimental data,it was found that the prediction error of all models were large,the mean absolute deviation of the model with the highest accuracy is 31.6%,and the mean absolute deviation of the model with the largest error is even more than 100%,indicating that the existing model cannot yield satisfied predictions on frictional pres⁃sure drop of environmentally friendly refrigerants.

关 键 词：环保制冷剂 流动沸腾 摩擦压降 预测模型 

分 类 号：V245[航空宇航科学与技术—飞行器设计]