80K脉管制冷机惯性管调相机理及优化研究  

Theory and Optimization Study of Inertance Tube of 80 K Pulse Tube Refrigerator

作　　者：刘少帅[1,2] 张华[1] 张安阔[2] 陈曦[1] 吴亦农[2] 

机构地区：[1]上海理工大学能源与动力工程学院,上海200093 [2]中国科学院上海技术物理研究所,上海200083

出　　处：《制冷学报》2016年第5期100-105,共6页Journal of Refrigeration

摘　　要：液氮温区脉冲管制冷机在高温超导等领域的应用越来越广泛。基于热声理论,本文采用Delta EC软件对纯惯性管及惯性管加气库的调相能力进行模拟研究,建立了80 K温区制冷机整机数值模型,分析了不同惯性管及气库组合方式对制冷机性能的影响。结果表明:纯惯性管结构和单段惯性管加气库两种方式可以达到较为接近的调相能力,采用双段惯性管接气库方式可以提高制冷机性能,最低温度可以达到48.8 K。最后搭建制冷机整机性能测试实验台对模拟结果进行了验证。The pulse tube refrigerator working at liquid nitrogen temperature is widely used in many fields, such as high temperature su- perconducting. Based on thermoacoustic theory, the phase shift ability of the inertance tube with/ without reservoir is investigated using DeltaEC. A pulse tube refrigerator model is built to investigate the effect of different inertance tube on cooling performance. The simulation results show that the inertance tube without reservoir would has close phase shift ability to the single-segment inertance tube with a reservoir. The pulse tube refrigerator connecting with double-segment inertance tube and reservoir gives a better cooling performance, in which lowest temperature would reach 48.8 K. At last, the test system is built to verify the simulation results.

关 键 词：脉管低温制冷机 惯性管 热声学 制冷性能实验 

分 类 号：TB651.4[一般工业技术—制冷工程] TP391.9[自动化与计算机技术—计算机应用技术]