几何参数对绕管式换热器传热特性影响的数值研究

Numerical Analysis Geometry Parameters on Hert Transfer for Spiral-wound Heat Exchanger

通过数值模拟的方法对绕管式换热器壳侧传热进行研究,重点研究了管径、径向比、缠绕角度、轴向比、盘绕圈数对传热性能的影响。结果表明:小的管径、小的径向比、大的轴向比对传热是有利的;缠绕角度、每层不同的圈数对传热的影响很小。

Through the method of numerical simulation, the shell-side heat transfer for spiral-wound heat exchanger was studied. The effects on heat transfer characteristics of main factors, such as diameter of tube, radial ratio, axial ratio and number of turns, was investigated. A major conelusion was draw. With the reduce of diameter of tube, radial ratio and the increase of axial ratio, the heat transfer cofficient will increase. The windinganlges and thenumber of turns have little influnee on the heat transfer.