三种三角翼纵向涡翅片管换热器流动传热特性对比研究  

Comparative study of fluid flow and heat transfer characteristics on the three kinds of fin-tube heat exchanger with delta winglets longitudinal vortex

作　　者：刘丹丹[1] 吴学红[1] 张林[1] 孟浩[1] 吕彦力[1] 李芳星 

机构地区：[1]郑州轻工业学院机电工程学院,河南郑州450002 [2]广州埃昂环境技术有限公司,广东广州510530

出　　处：《郑州轻工业学院学报（自然科学版）》2015年第2期72-76,92,共6页Journal of Zhengzhou University of Light Industry:Natural Science

基　　金：国家自然科学基金项目(21076200);河南省省院合作项目(092106000013);郑州市领军人才项目(131PLJRC640)

摘　　要：对三角翼圆形翅片管换热器、三角翼等径长椭圆形翅片管换热器和三角翼等周长椭圆形翅片管换热器的流动传热性能分别进行了数值研究.结果表明：三角翼等周长椭圆形翅片管换热器温度场和速度场分布最为均匀，换热效果最好；三角翼等周长椭圆形翅片管换热器奴塞尔数（Nu）最大，比三角翼圆形翅片管换热器增大2.2%-6.1%，比三角翼等径长椭圆形翅片管换热器增大6.5%-8.3%，比平翅片管换热器增大29.1%- 33.5%；从综合传热性能分析，三角翼纵向涡椭圆形翅片管换热器适合于中等及较大雷诺数（Re）工况.In the present study,the heat transfer and fluid flow characteristics of fin-tube heat exchangers of circular-tube,equal-diameter elliptic-tube and equal-perimeter elliptic-tube with delta winglets longitu-dinal vortex was presented based on the numerical simulation. The result showed that the temperature and velocity field of equal-perimeter elliptic-tube fin heat exchanger more uniform,and its heat transfer per-formance was the best,and the Nu number of equal-diameter elliptic-tube fin heat exchanger was the lar-gest,which was 2. 2% - 6. 1% higher than that of circular-tube heat exchanger with delta winglets, 6. 5% - 8. 3% higher than that of equal-radius elliptic-tube heat exchanger and with delta winglets and 29. 1% - 33. 5% higher than that of flat fin-tube heat exchanger. Considering from the overall perform-ance,the delta winglets longitudinal vortex oval fin-tube heat exchanger fit for moderate and high Reynolds numbers.

关 键 词：翅片管换热器 三角翼纵向涡翅片 流动性传热性能 

分 类 号：TK124[动力工程及工程热物理—工程热物理]