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Investigation of the dual-diameter inertance tube of a pulse tube cryocooler operating at super-high frequencies.

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Title: Investigation of the dual-diameter inertance tube of a pulse tube cryocooler operating at super-high frequencies.
Authors: Li, Geyang1,2 (AUTHOR) ligeyang21@mails.ucas.ac.cn, Feng, Tianshi1 (AUTHOR) fengtianshi@mail.ipc.ac.cn, Liang, Menglin1 (AUTHOR) liangml@mail.ipc.ac.cn, Li, Yanen1,2 (AUTHOR) liyanen22@mails.ucas.ac.cn, Tang, Qingjun1 (AUTHOR) tangqingjun10@mail.ipc.ac.cn, Zhang, Yuhong1 (AUTHOR) zhangyuhong@mail.ipc.ac.cn, Chen, Houlei1,2 (AUTHOR) hlchen@mail.ipc.ac.cn, Ma, Yue Xue1,2 (AUTHOR) mayuexue@mail.ipc.ac.cn
Source: Cryogenics. Mar2026, Vol. 155, pN.PAG-N.PAG. 1p.
Subjects: Cryogenics, Internal flows (Fluid mechanics), Phase transitions, Fluid flow, Empirical research, Cooling
Abstract: • Analyzes the phase-shifting limitations of single-diameter inertance tubes at super-high frequencies. • Systematically investigates the internal flow parameters along the tube of single- and dual-diameter inertance tubes. • Diameter variations reduce phase change rate near the inertance tube inlet,enabling more precise phase control. • Experimental results demonstrate a dual-diameter inertance tube can significantly enhance the performance at 150 Hz. Increasing the operating frequency is a key strategy for the miniaturization of the pulse tube cryocoolers. In the pursuit of high frequency and compact system designs, maintaining the phase relationship between the pressure and mass flow within the regenerator is essential for sustaining the cooling performance of the cryocoolers. However, at super-high operating frequencies, precise control of the phase angle becomes increasingly challenging when using the inertance tube and reservoir as the phase shifter. In this paper, a three-dimensional model of the inertance tube and reservoir was developed to investigate the critical internal flow parameters at super-high frequencies. The mass flow amplitude and the phase angle along the tube were compared for single-diameter and dual-diameter inertance tube configurations at 150 Hz. Experimental validation was conducted to evaluate the impact of these configurations on the pulse tube cryocooler's performance. The results demonstrate that employing a dual-diameter inertance tube as the phase shifter significantly enhances the cooling performance in super-high frequency cryocoolers. [ABSTRACT FROM AUTHOR]
Copyright of Cryogenics is the property of Elsevier B.V. and its content may not be copied or emailed to multiple sites without the copyright holder's express written permission. Additionally, content may not be used with any artificial intelligence tools or machine learning technologies. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)
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Header DbId: egs
DbLabel: Engineering Source
An: 191351150
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PubType: Academic Journal
PubTypeId: academicJournal
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  Data: Investigation of the dual-diameter inertance tube of a pulse tube cryocooler operating at super-high frequencies.
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  Data: <searchLink fieldCode="AR" term="%22Li%2C+Geyang%22">Li, Geyang</searchLink><relatesTo>1,2</relatesTo> (AUTHOR)<i> ligeyang21@mails.ucas.ac.cn</i><br /><searchLink fieldCode="AR" term="%22Feng%2C+Tianshi%22">Feng, Tianshi</searchLink><relatesTo>1</relatesTo> (AUTHOR)<i> fengtianshi@mail.ipc.ac.cn</i><br /><searchLink fieldCode="AR" term="%22Liang%2C+Menglin%22">Liang, Menglin</searchLink><relatesTo>1</relatesTo> (AUTHOR)<i> liangml@mail.ipc.ac.cn</i><br /><searchLink fieldCode="AR" term="%22Li%2C+Yanen%22">Li, Yanen</searchLink><relatesTo>1,2</relatesTo> (AUTHOR)<i> liyanen22@mails.ucas.ac.cn</i><br /><searchLink fieldCode="AR" term="%22Tang%2C+Qingjun%22">Tang, Qingjun</searchLink><relatesTo>1</relatesTo> (AUTHOR)<i> tangqingjun10@mail.ipc.ac.cn</i><br /><searchLink fieldCode="AR" term="%22Zhang%2C+Yuhong%22">Zhang, Yuhong</searchLink><relatesTo>1</relatesTo> (AUTHOR)<i> zhangyuhong@mail.ipc.ac.cn</i><br /><searchLink fieldCode="AR" term="%22Chen%2C+Houlei%22">Chen, Houlei</searchLink><relatesTo>1,2</relatesTo> (AUTHOR)<i> hlchen@mail.ipc.ac.cn</i><br /><searchLink fieldCode="AR" term="%22Ma%2C+Yue+Xue%22">Ma, Yue Xue</searchLink><relatesTo>1,2</relatesTo> (AUTHOR)<i> mayuexue@mail.ipc.ac.cn</i>
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  Data: <searchLink fieldCode="JN" term="%22Cryogenics%22">Cryogenics</searchLink>. Mar2026, Vol. 155, pN.PAG-N.PAG. 1p.
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– Name: Abstract
  Label: Abstract
  Group: Ab
  Data: • Analyzes the phase-shifting limitations of single-diameter inertance tubes at super-high frequencies. • Systematically investigates the internal flow parameters along the tube of single- and dual-diameter inertance tubes. • Diameter variations reduce phase change rate near the inertance tube inlet,enabling more precise phase control. • Experimental results demonstrate a dual-diameter inertance tube can significantly enhance the performance at 150 Hz. Increasing the operating frequency is a key strategy for the miniaturization of the pulse tube cryocoolers. In the pursuit of high frequency and compact system designs, maintaining the phase relationship between the pressure and mass flow within the regenerator is essential for sustaining the cooling performance of the cryocoolers. However, at super-high operating frequencies, precise control of the phase angle becomes increasingly challenging when using the inertance tube and reservoir as the phase shifter. In this paper, a three-dimensional model of the inertance tube and reservoir was developed to investigate the critical internal flow parameters at super-high frequencies. The mass flow amplitude and the phase angle along the tube were compared for single-diameter and dual-diameter inertance tube configurations at 150 Hz. Experimental validation was conducted to evaluate the impact of these configurations on the pulse tube cryocooler's performance. The results demonstrate that employing a dual-diameter inertance tube as the phase shifter significantly enhances the cooling performance in super-high frequency cryocoolers. [ABSTRACT FROM AUTHOR]
– Name: AbstractSuppliedCopyright
  Label:
  Group: Ab
  Data: <i>Copyright of Cryogenics is the property of Elsevier B.V. and its content may not be copied or emailed to multiple sites without the copyright holder's express written permission. Additionally, content may not be used with any artificial intelligence tools or machine learning technologies. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract.</i> (Copyright applies to all Abstracts.)
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RecordInfo BibRecord:
  BibEntity:
    Identifiers:
      – Type: doi
        Value: 10.1016/j.cryogenics.2026.104293
    Languages:
      – Code: eng
        Text: English
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      Pagination:
        PageCount: 1
        StartPage: N.PAG
    Subjects:
      – SubjectFull: Cryogenics
        Type: general
      – SubjectFull: Internal flows (Fluid mechanics)
        Type: general
      – SubjectFull: Phase transitions
        Type: general
      – SubjectFull: Fluid flow
        Type: general
      – SubjectFull: Empirical research
        Type: general
      – SubjectFull: Cooling
        Type: general
    Titles:
      – TitleFull: Investigation of the dual-diameter inertance tube of a pulse tube cryocooler operating at super-high frequencies.
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            NameFull: Li, Geyang
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            NameFull: Feng, Tianshi
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            NameFull: Liang, Menglin
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            NameFull: Li, Yanen
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            NameFull: Tang, Qingjun
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            NameFull: Zhang, Yuhong
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            – D: 01
              M: 03
              Text: Mar2026
              Type: published
              Y: 2026
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              Value: 155
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            – TitleFull: Cryogenics
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