回热器丝网填充率对85K型同轴脉管制冷机性能的影响分析  

Effect of regenerator wire filling rate on cooling performance of coaxial pulse tube cryocooler at 85K

作　　者：赵鹏 陆志[1] 蒋珍华[1] 曲晓萍[1] 吴亦农[1] Zhao Peng;Lu Zhi;Jiang Zhenhua;Qu Xiaoping;Wu Yinong(Shanghai Institute of Technical Physics,Chinese Academy of Sciences,Shanghai 200083,China;University of Chinese Academy of Sciences,Beijing 100049,China)

机构地区：[1]中国科学院上海技术物理研究所,上海200083 [2]中国科学院大学,北京100049

出　　处：《低温工程》2021年第3期17-20,32,共5页Cryogenics

基　　金：国家自然科学基金(51806231)。

摘　　要：通过建立一维数值模型,分析85 K型同轴脉管制冷机热力学参数随回热器丝网填充率变化的关系,揭示了丝网填充率对制冷机性能影响的机理。通过改变丝网填充率,分别进行了24.8%、25.5%、26.37%填充率的制冷机性能试验研究,研究发现12 W@85 K制冷量时的输入功随着丝网填充率的增加而增大,与数值模拟结果相符。通过对实验和模拟数值结果进行对比分析,验证了模型的准确性。One-dimensional numerical model was set up to analyze the thermodynamic parameters of the 85 K coaxial pulse tube cryocooler,which can reveal the mechanism of wire filling rate on cooling performance of refrigerator.By changing the wire filling rate,the cooling performance tests with 24.80%、25.50%、26.37%filling rate were carried out,respectively.The input power increases with the increase of wire filling rate when cooling capacity is 12 W@85 K,which is consistent with the numerical simulation results.The accuracy of the model is verified by comparing the experimental and simulation results.

关 键 词：脉管制冷机 填充率 相位差 能量损失 

分 类 号：TB661[一般工业技术—制冷工程]