Numerical investigation of displacer-type pulse tube refrigerator with orifice

BI Wenjun; LU Siman; ZHANG Xiaoqing

doi:10.11949/0438-1157.20251471

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Numerical investigation of displacer-type pulse tube refrigerator with orifice

Special Column\: Advances in Cryogenic Science and Technology\‌ | 更新时间：2026-09-29

- Numerical investigation of displacer-type pulse tube refrigerator with orifice
- CIESC Journal Vol. 77, Issue 8, Pages: 4562-4570(2026)
- 作者机构：
  
  华中科技大学能源与动力工程学院，湖北武汉 430074
- 作者简介：
- 基金信息：
- DOI：10.11949/0438-1157.20251471
  CLC： TK 123
- Received：29 December 2025，
  
  Revised：2026-04-23，
  
  Published：25 August 2026
- 稿件说明：
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毕文俊, 鲁斯曼, 张晓青. 小孔阀辅助调相气动推移活塞型脉管制冷机的模拟研究[J]. 化工学报, 2026, 77(8): 4562-4570

BI Wenjun, LU Siman, ZHANG Xiaoqing. Numerical investigation of displacer-type pulse tube refrigerator with orifice[J]. CIESC Journal, 2026, 77(8): 4562-4570
毕文俊, 鲁斯曼, 张晓青. 小孔阀辅助调相气动推移活塞型脉管制冷机的模拟研究[J]. 化工学报, 2026, 77(8): 4562-4570 DOI： 10.11949/0438-1157.20251471.

BI Wenjun, LU Siman, ZHANG Xiaoqing. Numerical investigation of displacer-type pulse tube refrigerator with orifice[J]. CIESC Journal, 2026, 77(8): 4562-4570 DOI： 10.11949/0438-1157.20251471.

摘要

气动型功回收推移活塞的运动特性主要取决于制冷机的工况参数和结构参数，通常在额定工况达到最佳匹配。然而，在实际运行中容易出现偏离额定设计工况的情况，导致整机制冷性能恶化。为此，采用小孔阀辅助调相的方法，在脉管热端增设一个小孔阀气库结构，模拟分析了在偏离额定工况时小孔阀开度对整机制冷性能的调节特性。模拟结果显示，在一定阀门开度内，小孔阀具有优化相位关系、减小回热器损失、提高整机效率的能力。

Abstract

The motion characteristics of the gas driving work-recovery displacer are primarily determined by the operating parameters and geometric parameters of the refrigerator

typically achieving optimal match under rated conditions. However

in actual operation

deviations from the rated design conditions are prone to occur

leading to a deterioration in the overall refrigeration performance. To address this

an orifice was added to the hot end of the pulse tube for auxiliary phase shifting. The regulation characteristics of the orifice opening on the cooling performance under off-design conditions were simulated and analyzed. The simulation results indicated that

within a certain range of orifice openings

the orifice can optimize the phase relationship

reduce losses in the regenerator

and enhance the efficiency.

关键词

Keywords

references

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