基于液态金属的温差热电系统仿真研究  

Simulation research of thermoelectric generator system with liquid metal

作　　者：季晨龙 徐广展 王瑞奇 JI Chenlong;XU Guangzhan;WANG Ruiqi(Armaments Department of the People's Liberation Army Navy,Beijing 100080,China;Laboratory on Thermal Energy and Power,Wuhan Second Ship Design and Research Institute,Wuhan 430205,China)

机构地区：[1]中国人民解放军海军装备部,北京100080 [2]武汉第二船舶设计研究所船舶热能动力全国重点实验室,湖北武汉430205

出　　处：《舰船科学技术》2025年第2期127-131,共5页Ship Science and Technology

基　　金：国家重点研发计划项目(2021YFC2802800)。

摘　　要：基于热电材料的温差热电系统作为动力系统具有静态、无磨损、紧凑的优势,但由于热电转换系统的热电器件与换热器的性能不匹配及系统设计不合理,导致热电发电系统性能无法充分发挥。液态金属具有优良的换热能力,通过耦合液态金属换热器、热电转换器件与水冷板,可高效地满足热电器件高温差、高热流密度、低热阻的运行需求。本文考虑热电转换动力系统,针对热电转换系统典型单元,建立热、固、流、电三维多物理场耦合模型,在特定换热器形式下,得到热电器件最优工作电流,分析水冷板材质的影响,最后给出不同流动介质入口条件对热电器件输出性能的影响,为海洋温差热电系统优化设计及动力应用提供技术支撑。Thermoelectric generator system based on thermoelectric materials has the advantages of being static,wear-free and compact,but due to the performance mismatch of thermoelectric generator system and the heat exchanger's and the irrational design of the system,there is a discount in the performance of thermoelectric generator system.By coupling liquid metal heat exchanger,which has excellent heat transfer capability,thermoelectric power generation devices and chilling plate,High temperature difference,high heat flow density and low thermal resistance of thermoelectric generator system can be efficiently met.This thesis establishes a three-dimensional multi-physics field coupling model covering heat,solid,flow and electricity for thermoelectric generator system,with which the optimal operating current of thermoelectric device and the influence of water-cooled plate material was analyzed,and influence of different flow medium inlet conditions on the electric output performance of thermoelectric generator system.

关 键 词：热电系统 液态金属 级联热电器件 方钴矿 碲化铋 

分 类 号：TL334[核科学技术—核技术及应用]