套管式换热器结构变化对换热能力影响的模拟研究

simulation research of impact of heat exchanger capacity of Heat exchanger casing’s structural changes

运用ANSYS公司的CFX计算流体软件对内径分别为10mm、16mm,壁厚1mm,管段长1000mm的逆流式套管换热器在内管安置同心和偏心等3种状态在不同工况下进行了数值模拟,得到了管内流体的速度与温度分布,并比较了3种情况下的换热系数。从结果分析得到随着偏心距的增加,套管的换热效果逐步下降。

This article apply the CFX computational fluid software of ANSYS software company to casing tube heat exchanger of inside diameter of 10mm, 16mm, wall thickness of Imm, pipe sections of the counter-flow 1000mm long, including concentric and eccentric placement of three kinds of state and other conditions in different conducted, draw a conclusion that the speed of the fluid and temperature distribution in the tube, and compared the case of three kinds of heat transfer coefficient.