15 K热耦合两级脉管制冷机低温段回热器长径比理论及实验研究

殷旺; 伍文婷; 惠贺军; 刘少帅; 蒋珍华; 吴亦农

doi:10.7652/xjtuxb202212019

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15 K热耦合两级脉管制冷机低温段回热器长径比理论及实验研究

—————————————————————— | 更新时间：2025-07-09

- 15 K热耦合两级脉管制冷机低温段回热器长径比理论及实验研究
- Theoretical and Experimental Study on the Length-Diameter of the Regenerator in the Low Temperature Section of a 15 K Thermal-Coupled Two-Stage Pulse Tube Cryocooler
- 西安交通大学学报 2022年56卷第12期页码：184-194
- 作者机构：
  
  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
  3. 上海理工大学能源与动力学院,上海,200093
- 作者简介：
  
  : 2022-06-22。作者简介: 殷旺(1996—),男,博士生
  刘少帅(通信作者),男,副研究员。基金项目: 中国科学院率先行动“引才计划”B类资助项目
- 基金信息：
  
  : 2022-06-22。作者简介: 殷旺(1996—),男,博士生;刘少帅(通信作者),男,副研究员。基金项目: 中国科学院率先行动“引才计划”B类资助项目;国家自然科学基金资助项目(51806231);中国科学院战略性先导科技专项资助(B类)项目(XDB35000000)
- DOI：10.7652/xjtuxb202212019
  中图分类号： TB651
- 网络首发：2022-12-10，
  
  纸质出版：2022
- 稿件说明：
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殷旺, 伍文婷, 惠贺军, 等. 15 K热耦合两级脉管制冷机低温段回热器长径比理论及实验研究[J]. 西安交通大学学报, 2022,56(12):184-194.

YIN Wang, WU Wenting, HUI Hejun, et al. Theoretical and Experimental Study on the Length-Diameter of the Regenerator in the Low Temperature Section of a 15 K Thermal-Coupled Two-Stage Pulse Tube Cryocooler[J]. 2022, 56(12): 184-194.
殷旺, 伍文婷, 惠贺军, 等. 15 K热耦合两级脉管制冷机低温段回热器长径比理论及实验研究[J]. 西安交通大学学报, 2022,56(12):184-194. DOI： 10.7652/xjtuxb202212019.

YIN Wang, WU Wenting, HUI Hejun, et al. Theoretical and Experimental Study on the Length-Diameter of the Regenerator in the Low Temperature Section of a 15 K Thermal-Coupled Two-Stage Pulse Tube Cryocooler[J]. 2022, 56(12): 184-194. DOI： 10.7652/xjtuxb202212019.

摘要

为了提高脉管制冷机的制冷量和效率

解决液氢温区以下多级脉管制冷机效率低下的问题

对关键部件之一的低温段回热器尺寸进行了设计优化。针对15 K两级脉管制冷机

首先采用数值模拟仿真的方法研究了低温段回热器尺寸对制冷机内部各项损失以及性能的影响

获得了等效长径比的最优值3.81; 然后研制了等效长径比分别为3.81、6.80的两种低温段回热器进行实验对比。实验结果表明

制冷机低温段回热器等效长径比为3.81时

制冷机性能更好

且在30 Hz下

可以在15 K获得制冷量0.91 W

此时各级总输入电功为386 W

整机的比卡诺效率达到4.45%。该研究可为制冷机低温段回热器的设计优化提供参考

对多级脉管制冷机的效率提升具有一定的指导意义。

Abstract

To improve the cooling capacity and efficiency of the pulse tube cryocooler and solve the problem of low efficiency of the multi-stage pulse tube cryocooler below the liquid hydrogen temperature area

the regenerator in the low temperature section is optimized in size. First

for the regenerator in the low temperature section of the 15 K two-stage pulse tube cryocooler

the influence of the regenerator size on the internal losses and performance is studied by numerical simulation

and it is obtained that the length-diameter ratio has an optimal value of 3.81. Then two kinds of regenerators with the length-diameter ratio of 3.81 and 6.80 are developed for experimental comparison. Experimental results show that the cryocooler has a better performance at the ratio of 3.81 and can obtain a maximum cooling capacity of 0.91 W at 15 K at 30 Hz. The total input power is 386 W and the rCOP reaches 4.45%. The research provides a reference for the design optimization of a regenerator in the low temperature section of the cryocooler and has guiding significance in improving efficiency of the multi-stage pulse tube cryocooler.

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references

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