制冷技术2025，Vol.45Issue(5)：1-9,9.DOI:10.3969/j.issn.2095-4468.2025.05.101
基于微型脉管制冷机的低温恒温器控温特性仿真及实验验证
Simulation and Experimental Verification of Temperature Control Characteristics for Cryostat Based on Miniature Pulse Tube Cryocooler
摘要
Abstract
A thermophysical model along with control algorithm for a cryostat based on a miniature pulse tube cryocooler is proposed in this paper.A thermal equilibrium simulation calculation method is developed using Modelica language,and the thermal equilibrium characteristics are investigated.A portable cryostat experimental system with miniature pulse tube cryocooler is established,and the accuracy of the thermal balance simulation method is validated through experimental data.After comparison,the predictive error of the heat balance simulation is found within 10%,while the error of the calculation for the temperature control stage is within 3%,demonstrating practical predictive value.Based on the temperature control calculation method,a parametric study of the cryostat is carried out to investigate the influence of the number and thickness of the thermal resistors on the cooling rate and temperature control effect.关键词
低温恒温器/Modelica/仿真计算/热平衡/实验验证Key words
Cryostat/Modelica/Simulation/Thermal equilibrium/Experimental validation分类
通用工业技术引用本文复制引用
XU Liangze,JIANG Xinbei,CHENG Lei,HUANG Yonghua..基于微型脉管制冷机的低温恒温器控温特性仿真及实验验证[J].制冷技术,2025,45(5):1-9,9.基金项目
国家重点研发计划课题(No.2022YFC2703000),上海交通大学深蓝计划(No.SL2023ZD101). （No.2022YFC2703000）
