单级热电发电机有效功率性能分析和优化  

Effective power performance analysis and optimization of single-stage thermoelectric generator

作　　者：田雷 陈林根 戈延林 王瑞博 TIAN Lei;CHEN Lin-gen;GE Yan-lin;WANG Rui-bo

机构地区：[1]武汉工程大学热科学与动力工程研究所,湖北武汉430205 [2]湖北省绿色化工装备工程技术研究中心,湖北武汉430205 [3]武汉工程大学机电工程学院,湖北武汉430205

出　　处：《节能》2022年第2期28-32,共5页Energy Conservation

基　　金：国家自然科学基金“船海用蒸汽动力装置多目标构形优化”(项目编号:51779262);武汉工程大学第十二届研究生教育创新基金(项目编号:CX2020047)。

摘　　要：在已有文献建立的单级多单元热电发电机模型基础上,运用有限时间热力学理论,研究热电发电机有效功率最优性能,推导出有效功率表达式。通过数值计算,比较最大有效功率和最大功率条件下,热电发电机的效率,分析热电单元数和高温热源温度对热电发电机有效功率性能的影响。结果表明,最大有效功率下的效率高于最大功率下的效率;热电单元数和高温热源温度对热电发电机有效功率的影响较大,选择合适的热电单元数和高温热源温度能够提高热电发电机的性能。Based on the single-stage multielement thermoelectric generator model established in the previous literature,the finite time thermodynamics theory is applied to study the effective power optimal performance of the thermoelectric generator,and the effective power expression is derived.Through numerical calculations,the efficiencies of the thermoelectric generator under the maximum effective power and maximum power conditions are compared,and the influences of the number of thermoelectric elements and the temperature of the high temperature heat source on the effective power performance of the thermoelectric generator are analyzed.The results show that the efficiency under the maximum effective power is higher than that under the maximum power,the number of thermoelectric elements and the temperature of the high temperature heat source have greater influences on the effective power of the thermoelectric generator,and the thermoelectric generator performance can be improved by choosing the appropriate number of thermoelectric elements and the temperature of the high temperature heat source.

关 键 词：单级多单元热电发电机 性能优化 有效功率 有限时间热力学 

分 类 号：O414[理学—理论物理]