基于相变材料的半导体热电发电器性能优化研究  

Research on Performance Optimization of Semiconductor Thermoelectric Generaor Based on Phase Change Material

作　　者：高德扬 蒋中一 张锴 孟境辉[2,3] GAO Deyang;JIANG Zhongyi;ZHANG Kai;MENG Jinghui(School of Nuclear Science and Engineering,North China Electric Power University,Changping District,Beijing 102206,China;Beijing Key Laboratory of Emission Surveillance and Control for Thermal Power Generation(North China ElectricPower University),Changping District,Beijing 102206,China;School of Energy,Power and Mechanical Engineering,North China Electric Power University,Changping District,Beijing 102206,China)

机构地区：[1]华北电力大学核科学与工程学院,北京市昌平区102206 [2]热电生产过程污染物监测与控制北京市重点实验室(华北电力大学),北京市昌平区102206 [3]华北电力大学能源动力与机械工程学院,北京市昌平区102206

出　　处：《发电技术》2023年第6期842-849,共8页Power Generation Technology

基　　金：国家自然科学基金项目(51706067);中央高校基础科研基金项目(2019MS053)。

摘　　要：近年来,利用相变材料(phase change material,PCM)提升半导体热电发电器(thermoelectric generator,TEG)输出性能及维持TEG长效运行受到广泛关注。针对现有PCM-TEG结合方式复杂且缺乏统一认识的现状,建立了PCM-TEG耦合数学模型,对比了PCM布置在TEG热侧、冷侧及双侧时的系统性能,提出了骨架PCM设计并验证了其有效性。结果表明:骨架PCM设计通过实现TEG热管理,在一定程度上能提升器件的输出能力,并能利用自身蓄热能力有效地避免热电器件失效;骨架PCM设计优于常规无骨架PCM-TEG的系统性能;热侧PCM-TEG和双侧PCM-TEG设计能有效维持TEG的稳定运行;增强TEG冷侧换热能力,可弥补热侧PCM-TEG系统性能的不足。研究结果可以为下一步PCM-TEG应用研究提供参考。In recent years,the use of phase change material(PCM)to improve the output performance of semiconductor thermoelectric generator(TEG)and maintain the long-term operation of TEG has been widely concerned.In view of the current situation that the existing PCM-TEG combination methods are complicated and lack of unified understanding,this paper established a PCM-TEG coupling mathematical model,compared the system performance when PCM is arranged on the hot side,cold side and double sides of TEG,and proposed a skeleton with PCM design and verified its effectiveness.The results show that,through the design of PCM,the output capacity of the TEG can be improved by the device thermal management,which can effectively avoid the failure of thermoelectric devices due to its own heat storage capacity.The skeleton with PCM design is superior to the conventional PCM-TEG system performance.The design of hot-side-PCM-TEG on the double-sides-PCM-TEG on double sides can effectively maintain the stable operation of TEG.Enhancing the heat transfer capacity of TEG on the cold side can make up for the defect of insufficient output performance of hot-side-PCM-TEG.The study results can provide a reference for the next research on the relevant application of PCM-TEG.

关 键 词：热管理 热电发电器(TEG) 相变材料(PCM) 强化换热 骨架 失效 

分 类 号：TK11[动力工程及工程热物理—热能工程] TM913[电气工程—电力电子与电力传动]