热声制冷机板叠导热系数对稳态温差的影响  

The effect of thermal conductivity of thermoacoustic chiller plate stack on its steady-state temperature difference

作　　者：汪建新[1] 李昭钦 宋春雨 范蒙洋 Wang Jianxin;Li Zhaoqin;Song Chunyu;Fan Mengyang(Inner Mongolia University of Science and Technology,Baotou 014010,China)

机构地区：[1]内蒙古科技大学,包头014010

出　　处：《低温与超导》2024年第12期64-69,共6页Cryogenics and Superconductivity

基　　金：国家自然科学基金(5226605)资助。

摘　　要：为了研究给定工作频率下板叠导热系数对板叠两端温度差的影响,本文使用数值仿真方法,在无负载情况下设置激励频率为200 Hz,激励振幅为3 mm,当板叠材料导热系数选取导热系数为2.23 W/(m·K)时,板叠两端温差最大,可达24.05 K。结果表明,在给定激励频率下,存在一个最佳导热系数,能使板叠两端的温差达到最大。研究结果为合理选择板叠材料、提高制冷效果提供了参考。In order to study the influence of the thermal conductivity of the stack on the temperature difference between the two ends of the stack under a given operating frequency,a numerical simulation method was used to set the excitation frequency to 200 Hz and the excitation amplitude to 3 mm under the condition of no load,and when the thermal conductivity of the stacked ma⁃terial was 2.23 W/(m·K),the temperature difference between the two ends of the plate stack was the largest,up to 24.05 K.The results show that there is an optimal thermal conductivity at a given excitation frequency,which maximizes the temperature difference between the two ends of the stack.The research results can provide a reference for the rational selection of laminated materials and the improvement of refrigeration effect.

关 键 词：板叠 导热系数 温度差 振幅 热声制冷 

分 类 号：TB69[一般工业技术—制冷工程]