制冷技术2025，Vol.45Issue(1)：13-20,8.DOI:10.3969/j.issn.2095-4468.2025.01.103
热电脉冲过冷效应的尺度特性研究
Study on Scale Characteristics of Undercooling Effect of Thermoelectric Pulse
摘要
Abstract
The multi-physics finite element simulation method is adopted to study the variation rules of four defined evaluation parameters,minimum pulse subcooling time,pulse subcooling duration time,subcooling degree,stability degree changing with the height of thermoelectric arm under different heat exchange conditions,pulse amplitude and thermoelectric materials.By comparing pulse subcooling and thermal response characteristics of macro,miniature and micro thermoelectric cooler(TEC),the application scenarios of different scale TEC are given.The results showed that the micro TEC has fast pulse response speed,large subcooling degree and stability degree,whereinto the influence of pulse amplitude is the largest,when pulse amplitude increases by 3 times,the subcooling degree could also be enhanced by nearly 3 times,and the stability degree only decreases by 18%.The influences of figure of merit of thermoelectric materials for all scale TECs are all small,only the minimum pulse subcooling time and pulse subcooling duration time of macro TEC both nearly increases by 25%when ZT increases from 0.74 to 3.18,the other scale TECs and the other parameters of macro TEC nearly change little.The influence of heat transfer coefficient of hot end on miniature TEC is most with the maximum change value of 97%.关键词
热电制冷/脉冲过冷效应/尺度特性/过冷度Key words
Thermoelectric cooling/Pulse supercooling effect/Scale characteristics/Subcooling degree分类
通用工业技术引用本文复制引用
代焱,唐佳新,刘泽宇,申利梅..热电脉冲过冷效应的尺度特性研究[J].制冷技术,2025,45(1):13-20,8.基金项目
深圳市科技计划基础研究重点(No.JCYJ20210324115611030). （No.JCYJ20210324115611030）
