三级同轴型脉冲管制冷机温度分布对回热器损失影响的数值研究  

Numerical investigation of temperature distribution effect on regenerator losses in a coaxial three-stage pulse tube refrigerator

作　　者：方楚舒 王泽昆 李青[1,2] 李来风 周远[1,2] Fang Chushu;Wang Zekun;Li Qing;Li Laifeng;Zhou Yuan(Key Laboratory of Cryogenic Engineering,Technical Institute of Physical and Chemical,Chinese Academy of Sciences,Beijing 100190,China;University of Chinese Academy of Sciences,Beijing 100049,China)

机构地区：[1]中国科学院理化技术研究所低温工程学重点实验室,北京100190 [2]中国科学院大学,北京100049

出　　处：《低温工程》2023年第6期71-74,89,共5页Cryogenics

摘　　要：采用数值模拟方法研究三级同轴脉冲管制冷机,比较分析了同截面回热器和脉冲管的温度差异,并由此研究探讨了回热器各项损失与温度分布的相关性。结果表明,同一级回热器里不同形状的蓄冷材料之间的温度梯度会有较大的变化,导致轴向导热损失的明显增加。A numerical simulation method was used to study a three-stage coaxial pulse tube refrigerator.The temperature difference between regenerator and pulse tube of the same cross-sec-tion was compared and analyzed,and the correlation between the various losses of regenerator and the temperature distribution was investigated.The results show that the temperature gradient be-tween different shapes of cold-storage materials in the same heat-recovery stage varies considera-bly,leading to a significant increase in the axial heat-conducting losses.

关 键 词：脉冲管制冷机 回热器损失 温度分布 数值研究 

分 类 号：TB651[一般工业技术—制冷工程]