华中科技大学学报（自然科学版）2024，Vol.52Issue(4)：64-70,7.DOI:10.13245/j.hust.240533
密闭空间分离式两级热电制冷器瞬态特性分析
Analysis on transient characteristics of separated two-stage thermoelectric cooler in confined space
摘要
Abstract
Based on finite time thermodynamics,a transient model of separated two-stage thermoelectric cooler working in a confined space was established.The calculation method of transient performance was given,and the variation rules of space temperature,module temperature difference,input power,and coefficient of performance with time were obtained.The effects of key parameters such as the working current and the length of the thermoelectric leg on the stable temperature,cooling rate and coefficient of performance of the cooling space were analysed,and compared with two-stage cooler in series.Results show that compared with the two-stage thermoelectric cooler in series,the initial coefficient of performance of the separated cooler is increased by 3.57%.The coefficients of performance of the non-adiabatic model without heat source and the non-adiabatic model with heat source are increased by 5.72%and 4.11%at 300 s,respectively,and the space temperature is decreased by 5.58%and 3.09%respectively.The space temperature of adiabatic model and non-adiabatic model without heat source can be reduced to-29.03℃and 8.98℃respectively by optimization of working current.关键词
两级热电制冷器/分离式/瞬态特性/密闭空间/性能优化/有限时间热力学Key words
two-stage thermoelectric cooler/separate/transient characteristics/confined space/performance optimization/finite time thermodynamics分类
通用工业技术引用本文复制引用
孟凡凯,徐辰欣,陈华伟..密闭空间分离式两级热电制冷器瞬态特性分析[J].华中科技大学学报（自然科学版）,2024,52(4):64-70,7.基金项目
国家自然科学基金资助项目(11974429) （11974429）
海军工程大学自主研发计划资助项目(2022502210). （2022502210）
