CFD modeling and experimental verification of a single-stage coaxial Stirling-type pulse tube cryocooler without either double-inlet or multi-bypass operating at 30–35 K using mixed stainless steel mesh regenerator matrices

Dang, Haizheng; Zhao, Yibo

doi:10.1016/j.cryogenics.2016.06.001

Cited by 19 publications

(4 citation statements)

References 12 publications

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“…The present model is validated with previously conducted experiment by Dang et al [23] to ensure accuracy. The variation between the simulation and the experiment was found to be less than 20%.…”

Section: Model Validationmentioning

confidence: 79%

“…CFD based on the thermal equilibrium model of Pulse tube cryocooler was carried out by cha et al [20], Ashwin et al [21] and Abraham et al [22]. Dang et al [23] and Zhao et al [24] developed thermal non-equilibrium CFD model for coaxial Stirling type pulse tube cryocooler. The reservoir along with inertance tube is necessary to obtain higher phase-shifting ability, which makes the pulse tube cryocooler bulkier compared to the Stirling cryocoolers with displacer.…”

Section: Introductionmentioning

confidence: 99%

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Numerical Analysis of a Pulse Tube Cryocooler with Inertance Tube-Bounce Space as Phase Shifter

Abraham*,

Kuzhiveli

2019

IJEAT

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A performance comparison of a Pulse Tube Cryocooler (PTC) that uses inertance tube- bounce space and inertance tube-reservoir as a phase shifter is conducted using numerical simulations. The initial design cryocoolers were carried out using Sage software. A CFD model was developed using ANSYS Fluent to analyze the Cryocooler performance. The CFD model was used to simulate the effect of different volumes of reservoir and bounce space on Cryocooler performance. The thermal non-equilibrium mode was chosen to consider the effect of temperature difference between solid and fluid temperature difference in porous zones. The numerical model was validated with experiments from referred journal. The simulation results showed a phenomenal increasing trend in cooling capacity up to 400cm3 , and thereafter, a marginal increment in performance with increase in volume. The Stirling cryocooler with inertance tube-bounce space as phase shifter has over performed the cryocooler with inertance tube-reservoir. The COP of cryocooler with 400cm3 bounce volume was found to be 0.042, is 1.38 times higher than that of 200 cm3 and for higher volumes difference in COP was less significant.

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Section: Model Validationmentioning

confidence: 79%

Section: Introductionmentioning

confidence: 99%

Numerical Analysis of a Pulse Tube Cryocooler with Inertance Tube-Bounce Space as Phase Shifter

Abraham*,

Kuzhiveli

2019

IJEAT

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“…The phase and volume effects of the active phase controller on the phase, mass movement, pressure ratio and efficacy of the refrigerating pulse tube have also been studied using a two-dimensional axis-symmetric CFD computer analysis [15]. In 220 W-input theoretical electrical equipment, the configuration of the mesh segments used indicates how it was configured in order to achieve optimum cooling efficiency or the lowest exergy level, the non-load temperature of 27.2 K and the cooling energy [16]. A 1.22 kg coaxial miniature pulse tube cryocooler (MPTC) was developed and examined for cooling related to cryogenic applications requiring compactness, less weight and fast cooling rate.…”

Section: Introductionmentioning

confidence: 99%

Impact of Varying Load Conditions and Cooling Energy Comparison of a Double-Inlet Pulse Tube Refrigerator

et al. 2020

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Modeling and optimization of a double-inlet pulse tube refrigerator (DIPTR) is very difficult due to its geometry and nature. The objective of this paper was to optimize-DIPTR through experiments with the cold heat exchanger (CHX) along the comparison of cooling load with experimental data using different boundary conditions. To predict its performance, a detailed two-dimensional DIPTR model was developed. A double-drop pulse pipe cooler was used for solving continuity, dynamic and power calculations. External conditions for applicable boundaries include sinusoidal pressure from an end of the tube from a user-defined function and constant temperature or limitations of thermal flux within the outer walls of exchanger walls under colder conditions. The results of the system’s cooling behavior were reported, along with the connection between the mass flow rates, heat distribution along pulse tube and cold-end pressure, the cooler load’s wall temp profile and cooler loads with varied boundary conditions i.e. opening of 20% double-inlet and 40-60% orifice valves, respectively. Different loading conditions of 1 and 5 W were applied on the CHX. At 150 K temperature of the cold-end heat exchanger, a maximum load of 3.7 W was achieved. The results also reveal a strong correlation between computational fluid dynamics modeling results and experimental results of the DIPTR.

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“…Line diagram of the model is shown in Figure 2. The geometrical dimensions and boundary conditions are described in the Tables 1 and 2 [9] . 2.3.1.…”

Section: Sage Analysismentioning

confidence: 99%

Numerical analysis of inertance pulse tube cryocooler with a modified reservoir

Abraham

Damu

Kuzhiveli

2017

IOP Conf. Ser.: Mater. Sci. Eng.

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Abstract. Pulse tube cryocoolers are used for cooling applications, where very high reliability is required as in space applications. These cryocoolers require a buffer volume depending on the temperature to be maintained and cooling load. A miniature single stage coaxial Inertance Pulse Tube Cryocooler is proposed which operates at 80 K to provide a cooling effect of at least 2 W. In this paper a pulse tube cryocooler, with modified reservoir is suggested, where the reverse fluctuation in compressor case is used instead of a steady pressure in the reservoir to bring about the desired phase shift between the pressure and the mass flow rate in the cold heat exchanger. Therefore, the large reservoir of the cryocooler is replaced by the crank volume of the hermetically sealed linear compressor, and hence the cryocooler is simplified and compact in size. The components of the cryocooler consist of a connecting tube, aftercooler, regenerator, cold heat exchanger, flow straightener, pulse tube, warm heat exchanger, inertance tube and the modified reservoir along with the losses were designed and analyzed. Each part of the cryocooler was analysed using SAGE v11 and verified with ANSYS Fluent. The simulation results clearly show that there is 50% reduction in the reservoir volume for the modified Inertance pulse tube cryocooler.

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CFD modeling and experimental verification of a single-stage coaxial Stirling-type pulse tube cryocooler without either double-inlet or multi-bypass operating at 30–35 K using mixed stainless steel mesh regenerator matrices

Cited by 19 publications

References 12 publications

Numerical Analysis of a Pulse Tube Cryocooler with Inertance Tube-Bounce Space as Phase Shifter

Numerical Analysis of a Pulse Tube Cryocooler with Inertance Tube-Bounce Space as Phase Shifter

Impact of Varying Load Conditions and Cooling Energy Comparison of a Double-Inlet Pulse Tube Refrigerator

Numerical analysis of inertance pulse tube cryocooler with a modified reservoir

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