Experimental investigation of the connecting tube effect on a step displacer type two stage pulse tube refrigerator

Lin, Yanwen; Guo, Zhaorui; Guo, Zhimin; Zhu, Shaowei

doi:10.1016/j.applthermaleng.2020.115229

Cited by 8 publications

(2 citation statements)

References 23 publications

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“…Recent advancements in the multistaging of IPTC are the addition of step displacer as a phase shifter [13][14][15][16], Stirling/Pulse Tube Hybrid Cryocooler (SPC) [17], cryogenic phase-shifting mechanism [18], and cascading of cryocoolers [19]. Pang et al [13,14] added step displacer in two-stage PTC to enhance the performance.…”

Section: Introductionmentioning

confidence: 99%

“…Step displacer implements two functions, one is to distribute work between two stages and the second is to control phase shift. In the second stage of step displacer Two-Stage Inertance Pulse Tube Cryocooler (TSIPTC), the cyclic steady temperature of 16.9 K is attained at CHX experimentally [15,16]. Raytheon Company developed an innovative SPC in 1999.…”

Section: Introductionmentioning

confidence: 99%

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Numerical analysis of double inlet two-stage inertance pulse tube cryocooler

Choudhari¹,

Gawali²,

Momin³

et al. 2021

IJATEE

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Stirling-type Pulse Tube Cryocoolers (PTC) are designed to meet present and upcoming commercial requirements and needs with durability and low vibrations. Multistaging in Stirling type PTC is one of the major developments reported in recent times for low-temperature achievement, due to improved performance over a period of time. The current study aims to define the methodology for numerical assessment of Double Inlet Two-Stage Pulse Tube Cryocooler (DITSPTC) to achieve cryogenic temperature of 20 K. This paper performs Computational Fluid Dynamics (CFD) simulation of PTC for defining the methodology using the CFD software package and then the same methodology is extended for the analysis ofDITSPTC. The system simulations are performed with frequency of 70 Hz and average pressure of 20 bar. The minimum temperatures obtained from simulations are 95 K and 20 K at the first and second stage respectively.

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