Numerical analysis of inertance pulse tube cryocooler with a modified reservoir

Abraham, Derick; Damu, C.; Kuzhiveli, Biju T.

doi:10.1088/1757-899x/278/1/012154

Cited by 4 publications

(3 citation statements)

References 9 publications

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“…The phase difference between the compressor and bounce space flow is around 180 o with less amplitude. If we can make use of this phase difference in favour, inertance tube-bounce [4,5] space combination can act as a compact phase shifter. A pulse tube cryocooler that uses the inertance tube-bounce space as phase shifter is shown in figure 1.…”

Section: Cryocooler With Inertance Tube-bounce Space As Phase Shiftermentioning

confidence: 99%

Investigation of regenerator mesh characteristics for a pulse tube cryocooler

Abraham

Kuzhiveli

2022

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

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An investigation of regenerator mesh characteristics on a Pulse tube cryocooler’s performance is conducted using Sage V11 software. The cryocooler operates between temperatures of 300 K and 80 K. The components of the cryocooler are free piston linear compressor, aftercooler, regenerator, pulse tube, warm heat exchanger, and inertance tube- bounce space as the phase shifter. The performance of the regenerative cryocoolers depends on the regenerator. The regenerator of this cryocooler consists of a stack of stainless steel meshes. In this paper, a comparison of regenerator stainless steel meshes with mesh number #200, #300, #400, #500 and its combinations were analysed. To choose the best multi mesh combination, the length of the individual meshes is varied so that the total length of the regenerator is unchanged. The performance was analysed based on the Coeffcient of Performance of cryocooler for single mesh type and mesh combinations (combination two) at acceptor temperature of 80 K. The maximum performance with single mesh was with #400 mesh with COP of 6.12%. The cryocooler’s maximum Coeffcient of Performance was with the combination of #400 and #500 meshes in the regenerator. The best multi mesh combination gave 4.071 W cooling power with an input power of 61.92 W with a COP of 6.57%. There was an improvement of 7.26% with the use of multiple mesh regenerator.

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Section: Cryocooler With Inertance Tube-bounce Space As Phase Shiftermentioning

confidence: 99%

Investigation of regenerator mesh characteristics for a pulse tube cryocooler

Abraham

Kuzhiveli

2022

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

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“…A DIPTR with a dual inlet valve connected to the pulse cooler was developed to improve the refrigeration effect [18]. Various software analyses and models have been developed in order to evaluate the cooling and loss processes [19,20]. Nevertheless, the exact nature of the physical phenomena that induce pulse tube coolers (PTR) activity was not well understood.…”

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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“…Design of cryocoolers is carried out with numerical tools and application software. Abolghasemi et al [15], Abraham et al [16] and Wang et al [17] used Sage software for the design of Pulse tube cryocooler. Iwase et al [18] and Wang et al [19] used an electric circuit analogy for simulation of IPTC.…”

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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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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Numerical analysis of inertance pulse tube cryocooler with a modified reservoir

Cited by 4 publications

References 9 publications

Investigation of regenerator mesh characteristics for a pulse tube cryocooler

Investigation of regenerator mesh characteristics for a pulse tube cryocooler

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

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

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