车载多管式波纹管温差发电装置结构优化输出特性分析

Structural Optimization and Output Characteristic Analysis of Vehicular Multi-tube Corrugated Pipe Temperature Differential Power Generation Device

为提高车载式尾气温差发电装置的发电性能,作者对以多管式换热器为基础的热交换器汽车尾气温差发电装置进行了结构优化以及性能数值评估。向多管式换热器管道内壁添加波纹特征,并做出管道螺旋化处理,通过计算流体力学的方法验证不同管道传热性能变化,并利用Simulink搭建了温差发电装置计算模型,计算温差发电装置的发电性能。结果表明,随着管道内波纹高度的提升,换热器传热能力增强,而螺旋波纹管能够进一步提升换热器热性能,温差发电装置的发电性能达到最强。

In order to improve the performance of the vehicle-mounted exhaust thermoelectric power plant,the structure optimization and performance numerical evaluation of the vehicle exhaust thermoelectric power plant based on the multi-tube heat exchanger are carried out in this paper.The corrugated characteristics were added to the inner wall of the multi-tube heat exchanger pipeline,and the pipeline spiralization was made.The change of heat transfer performance of different pipelines was verified by computational fluid dynamics method,and the calculation model of the thermal power generation device was built by Simulink to calculate the power generation performance of the thermal power generation device.The results show that the heat transfer capacity of the heat exchanger is enhanced with the increase of the corrugated height in the pipe,and the spiral bellows can further improve the thermal performance of the heat exchanger,and the power generation performance of the thermoelectric power plant is the strongest.