【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。更多还原

【Abstract】 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.更多还原