本文介绍了椭圆管换热的某些进展,错流情况下,对不同长短轴比(a/b=2,3,4)的椭圆管束进行了数值模拟,得到了最适宜的a/b值(a/b=3),并在此基础上,对椭圆管束进行了试验研究,得到了该a/b=3情况下的传热与压降的关联式。与圆管相比,椭圆管束有良好的传热和流阻综合性能。 In this paper, some advances of elliptical tube heat transfer are introduced. Under the cross flow condition, the elliptical tube bundles with different ratio of length to short axis (a / b = 2, 3, 4) are numerically simulated and the most suitable a / b value (a / b = 3). On the basis of this, the elliptical tube bundle is studied experimentally, and the correlation between heat transfer and pressure drop is obtained for a / b = 3. Compared with the round tube, the elliptical tube bundle has good heat transfer and flow resistance overall performance.