汽车尾气余热发电装置的圆筒式换热器仿真  

Simulation on Cylindrical Heat Exchanger of Automobile Exhaust Thermoelectric Generator

作　　者：杜卓成 彭江英[1] 

机构地区：[1]华中科技大学机械科学与工程学院,湖北武汉430074

出　　处：《测控技术》2014年第5期135-138,共4页Measurement & Control Technology

基　　金：国家自然科学基金资助项目(51271084);湖北省自然科学基金项目(2012FFB02215)

摘　　要：采用圆筒式换热器结构,建立了用于温差发电的尾气通道模型,运用流体仿真软件ANSYS CFX对其与尾气的换热效果进行仿真,分析不同翅片厚度、高度及翅片个数对换热性能的影响。根据不同尾气速度下的模拟结果,确定了最佳翅片厚度、高度和翅片个数。计算结果表明,圆筒式换热器在减小尾气压降方面效果良好。A cylindrical heat transfer model for automobile exhaust thermoelectric generator is established.The heat transfer property of the cylindrical heat exchanger is simulated by the fluid simulation software ANSYS CFX,and the influences of fin thickness,fin height and fin number on heat transfer are analyzed.According to the simulation results under different exhaust speed,an optimum condition about thickness,height and number of fin is designated.In addition,the results show that the cylindrical heat exchanger has an excellent performance in decreasing exhaust pressure drop.

关 键 词：圆筒式换热器 ANSYS CFX 翅片通道 尾气压降 

分 类 号：TM913[电气工程—电力电子与电力传动]