变压器热换器的试验与仿真模拟  

Test and Simulation of Transformer Heat Exchanger

作　　者：梁凯歌 王剑彬[1] 孙建兵 LIANG Kaige;WANG Jianbin;SUN Jianbing(Institute of Mechanical Engineering,University of South China School,Hengyang 421001,China)

机构地区：[1]南华大学机械工程学院,湖南衡阳421001

出　　处：《工业加热》2025年第1期1-5,19,共6页Industrial Heating

摘　　要：针对某变电厂变压器余热回收系统搭建测试平台进行稳态试验,对余热回收系统中管壳式热换器冷热流体两侧温度进行测量,运用ANSYS Workbench对热换器进行仿真模拟,并对流体进出口温度进行分析,仿真结果与试验基本保持一致。此外又模拟了几种工况,通过改变折流板间距及管程流体进口初速度分析换热器内部流动与换热情况,得出以下结论:相同条件下,随着折流板间距的减小,延长了流体换热时间,换热效率明显提高;相同条件下,随着热换器管程流体进口速度的增加,增大了流体的湍流程度及有效换热面积,热换效率得到提高。A test platform for a transformer waste heat recovery system is built in a power plant to conduct steady-state tests,measurement of temperatures on both sides of the hot and cold fluids of a shell and tube heat exchanger in a waste heat recovery system.Simulation of heat ex-changer using ANSYS Workbench,analyzing fluid inlet and outlet temperatures.The simulation results are in general agreement with the test.In addition,several conditions were simulated to analyze the flow and heat transfer inside the heat exchanger by changing the pitch of the folding plate and the initial velocity of the inlet of the fluid in the pipe course.The following conclusions were drawn:under the same conditions,as the folding plate spacing is reduced,the fluid heat transfer time is extended and the heat transfer efficiency is significantly improved;under the same conditions,as the heat exchanger tube stroke fluid inlet velocity increases,increasing the degree of turbulence of the fluid and the effec-tive heat transfer area,heat exchange efficiency is improved.

关 键 词：管壳式换热器 折流板间距 余热回收 ANSYS 仿真 

分 类 号：TK124[动力工程及工程热物理—工程热物理]