电源技术2024，Vol.48Issue(5)：954-962,9.DOI:10.3969/j.issn.1002-087X.2024.05.027
热电臂与换热结构对低温温差发电系统性能影响
The influence of thermoelectric leg and heat exchange structure on the performance of low-temperature thermoelectric power generation system
摘要
Abstract
Low temperature thermal energy(<100℃)widely exists in energy systems and nature.Uti-lizing thermal energy at low temperatures is crucial for lowering energy costs and carbon emissions.Thermoelectric generator(TEG)without moving part can directly convert heat into electricity through the Seebeck effect,which has great development prospects.The key strategies for raising TEG system is optimized structure of thermoelectric leg,heat exchange,and operation parameters.Previous studies have not investigated the optimal structural characteristics of the thermoelectric leg and heat exchanger for utilizing low-temperature thermal energy.In this paper,a numerical model of TEG system was established.With consideration of system pressure drop and pump consumption,the effects of thermoelectric leg and heat exchange structure on net output power and system output efficiency for different operating parameters were studied.The results show that the short and wide thermoelectric leg is conducive to net output power for heat source below 35～100℃.For heat source temperature 60～100℃,thin and high thermoelectric leg exhibits better system output efficiency,and thick and high thermoelectric leg present better net output power and system efficiency.When hot source temperature is 35℃,short and wide thermoelectric leg exhibits higher system efficiency,thin and high fin present highest net output power and system efficiency.关键词
半导体温差发电系统/热电臂/换热翅片/结构优化/发电Key words
thermoelectric generator system/thermoelectric leg/heat exchanger fin/structure optimi-zation/power generation分类
信息技术与安全科学引用本文复制引用
蓝云成,鲁军辉,穆连波,王随林..热电臂与换热结构对低温温差发电系统性能影响[J].电源技术,2024,48(5):954-962,9.基金项目
"北京学者"计划(022) （022）
北京市教育委员会科研计划项目(KM202310016006) （KM202310016006）
