20 K单级斯特林制冷机理论研究  

Theoretical study of 20 K single stage Stirling refrigerator

作　　者：寇翠翠 王波 徐德军 吴维薇 刘磊 蔡斌 阮雪蔚 罗高乔 Kou Cuicui;Wang Bo;Xu Dejun;Wu Weiwe;Liu Lei;Cai Bin;Ruan Xuewei;Luo Gaoqiao(Anhui Province Key Laboratory of Cryogenic Technologies,The 16th Institute of CETC,Hefei 230088,China)

机构地区：[1]中国电子科技集团公司第十六研究所低温技术安徽省重点实验室,合肥230088

出　　处：《低温与超导》2020年第8期7-11,34,共6页Cryogenics and Superconductivity

基　　金：中国电科技术创新基金项目(KJ1804006)。

摘　　要：为满足小型超导磁体等领域对20 K温区制冷机的需求,本文进行了20 K温区单级斯特林制冷机的理论研究,通过对20 K温区高频交变流动换热机理和材料的热容、热渗透深度的影响分析,明确了20 K温区对回热器的设计准则,通过建立整机的热力学模型进行计算,计算结果表明,在铅丝丝径为24μm时,斯特林制冷机可获得的制冷量为0.65 W@20 K、1.84 W@25 K、3.02 W@30 K、4.26 W@35 K、5.48 W@40 K。满足设备对20 K温区单级斯特林制冷机的需求。Small superconducting magnet needs low temperature of 20 K by a refrigerator to work.A 20 K single-stage Stirling refrigerator was studied and analyzed from high frequency alternating flow heat transfer mechanism,the material heat capacities and thermal penetration depth.A design method of the regenerator in the refrigerator was confirmed,a thermodynamic model was built and simulated.The results show that the available refrigeration capacity of the Stirling refrigerator is 0.65 W@20 K,1.84 W@25 K,3.02 W@30 K,4.26 W@35 K and 5.48 W@40 K when the lead wire diameter is 24μm,which meet 20 K requirement of small superconducting magnet.

关 键 词：20 K单级斯特林制冷机 高频交变流动换热机理 热容 热渗透深度 

分 类 号：TK123[动力工程及工程热物理—工程热物理]