帕尔贴效应对热电发电系统输出影响的数值研究  

Numerical study on the influence of the Peltier effect on the output of thermoelectric generator system

作　　者：陈杰 汪若尘[1] 丁仁凯[1] 罗丁 CHEN Jie;WANG Ruochen;DING Renkai;LUO Ding(School of Automotive and Traffic Engineering,Jiangsu University,Zhenjiang 212013,China;Key Laboratory for Thermal Science and Power Engineering of Ministry of Education,Tsinghua University,Beijing 100084,China)

机构地区：[1]江苏大学汽车与交通工程学院,江苏镇江212013 [2]清华大学热科学与动力工程教育部重点实验室,北京100084

出　　处：《中南大学学报(自然科学版)》2025年第2期771-780,共10页Journal of Central South University:Science and Technology

基　　金：国家自然科学基金资助项目(52306017)。

摘　　要：为揭示帕尔贴效应对热电发电系统传热和输出性能的影响,构建热电发电系统的三维流热电多物理场耦合数值模型,采用数值仿真方法分别研究强化传热器件、外部负载电阻和热流体参数三个因素变化下,有无帕尔贴效应对系统传热和输出的影响。研究结果表明:在相同边界条件下,在有强化传热器件时,帕尔贴效应会导致热电发电模块两端温差降低4.1%,而在无强化传热器件时,帕尔贴效应会导致热电发电模块两端温差降低5.4%,说明无强化传热器件会加大帕尔贴效应对系统传热的影响程度;外部负载电阻的增加会降低帕尔贴效应对系统传热的影响程度,从而导致系统最大输出功率点处的负载电阻会稍大于内阻;帕尔贴效应对热电发电系统传热和输出的影响程度会随热流体质量流量的增加而减弱,基本不会随热流体温度的变化而变化。To elucidate the impact of the Peltier effect on the heat transfer and output performance of thermoelectric generator system,a three-dimensional multi-physics coupling numerical model of thermoelectric generator system incorporating flow,thermal,and electrical fields was developed.Numerical simulation methods were employed to investigate the variations in system heat transfer and output with and without the Peltier effect under three different conditions,i.e.,enhanced heat transfer devices,external load resistance and thermal fluid parameters.The results indicate that under identical boundary conditions,the Peltier effect causes 4.1%reduction in the temperature difference across the thermoelectric module with enhanced heat transfer devices,compared to 5.4%reduction without such devices.This demonstrates that the absence of enhanced heat transfer devices increases the influence of the Peltier effect on system heat transfer.Additionally,the increase in external load resistance reduces the influence of the Peltier effect on system heat transfer,resulting in the load resistance at the maximum output power point being slightly higher than the internal resistance.Furthermore,the impact of the Peltier effect on the heat transfer and output of the thermoelectric generator system diminishes with the increase in the mass flow rate of the thermal fluid and remains largely unaffected by the change in the thermal fluid temperature.

关 键 词：热电发电系统 帕尔贴效应 多物理场数值模型 传热 输出性能 

分 类 号：U463.99[机械工程—车辆工程]