应用泡沫铜的汽车尾气热电发电器性能的数值研究  

Numerical Study on Performance of Automobile Exhaust Thermoelectric Generator Using Copper Foam

作　　者：王力 刘珣 WANG Li;LIU Xun(School of Automotive Engineering,Wuhan University of Technology,Wuhan 43oo70,China)

机构地区：[1]武汉理工大学汽车工程学院,武汉430070

出　　处：《武汉理工大学学报》2024年第6期111-119,142,共10页Journal of Wuhan University of Technology

基　　金：湖北省支持企业科技创新发展专项(2021BA015);湖北省科技重大专项(2021AAA006)。

摘　　要：近年来,利用热电发电器从余热中回收二次能源的应用迅速增加。作者基于流-热-电多物理场,建立了填充泡沫铜的尾气热电发电器模型,研究了中间填充导流式泡沫铜和外圈填充翅片式泡沫铜对热电发电器性能的影响。数值模拟结果表明,与只填充导流式泡沫铜和只填充翅片式泡沫铜的热电发电器相比,两者都填充的热电发电器净输出功率分别提高了115.54 W和84.26 W。最后,还研究了填充泡沫铜对整个结构声学性能的影响,填充泡沫铜结构的平均传递损失比无泡沫铜的结构提升了72.96%。In recent years,the application of thermoelectric generator(TEG)for secondary energy recovery from waste heat has seen a rapid increase.This paper establishes a mathematical model for an exhaust gas thermoelectric generator filled with copper foam based on fluid-heat-electricity multiphysics fields.We investigate the impact of intermediate flow-guided copper foam and outer ring finned copper foam on the performance of the thermoelectric generator.Numerical sim-ulation results demonstrate that,compared with TEG filled solely with flow-guided copper foam or with finned copper foam,those filled with both types of foam exhibit a net output power increase of 115.54 W and 84.26 W respectively.Fi-nally,we examined the influence of inserting copper foam on the overall acoustic performance of the structure.The average transmission loss of the filled copper foam structure is 72.96%higher than that of the structure without copper foam.

关 键 词：余热回收 热电发电 泡沫铜 声学性能 

分 类 号：U469.72[机械工程—车辆工程]