空气横掠铸铁椭圆矩形翅片管的对流放热特性研究

EXPERIMENTAL INVESTIGATION OF CONVECT1VE HEAT TRANSFER PERFORMANCES OF ELLIPTIC CAST IRON TUBES WITH RECTANGULAR FIN

一、前言 本文对空气横掠铸铁椭圆矩形翅片管单管时的对流放热特性进行了试验研究,分析了椭圆翅片管的几何尺寸对对流放热的影响,得出了对流放热的无因次关联式。 与圆翅片管相比,椭圆翅片管具有传热性能较好、流动阻力较小的优点,因而在工业上得到了应用,并且发表了一些研究文章。在这些研究中。

The eonvective heat transfer performances when air across flows the elliptical cast iron tubes with rectangular fin are investigated. The effects of geometric parameters of elliptic cast iron tubes with rectangular fin on the performances of eonvective heat transfer are analyzed. The empirical dimensionless expression of eonvective heat transfer is obtained.