关于U形管式换热器流阻对压力场影响的分析

The Analysis on the Influence of Flow Resistance on Pressure Field of U-Tube Heat Exchanger

本文对U形管式换热器流阻对压力场的影响进行分析。研究方法是:先对换热器的流阻知识进行介绍,再对U形管式换热器的压力场进行模拟,使用换热器的流阻理论对所模拟的压力场进行分析。研究结论:U形管式换热器管程越长、流体入口流速越大、管径越小,进出口压降越大。通过模拟分析,为U形管式换热器的优化设计提供一些参考信息。

The influence of the flow resistance on pressure field of U-tube heat exchanger is analyzed in this paper. The research methods are as follows. Firstly, the knowledge of flow resistance of heat exchanger is introduced, then the pressure field of U-tube heat exchanger is simulated, and the simulated pressure field is analyzed by using the flow resistance theory of heat exchanger. The research conclusions are as followings. When the pipe length of U-tube is longer, the flow velocity of fluid at the inlet the U-tube is greater, the pipe diameter of U-tube is smaller, the pressure of fluid drop at the inlet and outlet of U-tube heat exchanger is greater. Through the simulation analysis, some reference information is provided for the optimal design of U tube heat exchanger.