A 300 Hz high frequency thermoacoustically driven pulse tube cooler

Zhu, Shanglong; Yu, Guoyao; Zhang, Xiaodong; Dai, Wei; Luo, Ercang; Zhou, Yuan

doi:10.1007/s11434-008-0190-z

Cited by 7 publications

(5 citation statements)

References 4 publications

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“…It was found that the load increased both the engine s hot temperature and the constant of proportionality relating input heating power to the square of the pressure amplitude. Later, Luo et al [175][176][177][178][179] investigated the performance of orifice pulse tube cryocoolers (PTCs) driven by standing-wave TAEs. In their systems, an acoustic pressure amplifier tube (APAT) was used to couple the TAE with the PTC.…”

Section: Standing-wave Thermoacoustic Systemsmentioning

confidence: 99%

Multi-physics coupling in thermoacoustic devices: A review

Chen

Tang

Mace

et al. 2021

Renewable and Sustainable Energy Reviews

106

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Section: Standing-wave Thermoacoustic Systemsmentioning

confidence: 99%

Multi-physics coupling in thermoacoustic devices: A review

Chen

Tang

Mace

et al. 2021

Renewable and Sustainable Energy Reviews

106

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“…This condition allows to consider the pressure and the velocity constant over the discussed heat exchanger. Furthermore, the assumption of temperature difference across the stack is low enough to assume that the thermophysical properties of the working medium are constant [1,17]. For an easier description of the thermal and viscous phenomena, taking place at the interface between the gas and the stack material, the thermal and viscous penetration depths, defined by Eqs.…”

Section: Strategy For Design Of Simple Thermoacoustic Cooler 21 Fundmentioning

confidence: 99%

“…The number and hydraulic radius of the pores, applied in the stack, have to correspond to the assumed porosity, as they directly affect the acoustic power transformation within the stack [1,18]. However, the optimal dimensions are limited by the available manufacturing technology and its pricing, since the geometry of neighboring heat exchangers should be similar to that of the stack [17,21]. Due to the intensive development of rapid prototyping technologies, including the stereolitography (SLA), vital drop in stack manufacturing costs has been observed.…”

Section: Design Of An Experimental Devicementioning

confidence: 99%

Design of simple refrigerating device for multiparametric analysis of the thermoacoustic cooling phenomenon

Grzywnowicz

Remiorz

2019

International Journal of Thermodynamics

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Although the widespread introduction of numerical tools and the CFD models have improved the design methodology of thermoacoustic coolers and eased optimization of such units, high computational costs vitally limit their application in parametric analyses of thermoacoustic devices. Thus, experimental investigation remains essential field of research, considering design of such units. In the paper, the design and construction of an experimental setup, dedicated to perform an extensive multiparametric analyses on compact thermoacoustic devices with varying characteristic parameters, is discussed in detail. A complete design path, beginning with general consideration, with further detailed dimensioning and selection of market-available parts, ending with installation of control and data acquisition equipment, is described. Initial testing of the device, performed both computationally at the design stage and experimentally after the final setup assembling, is discussed as well. The results of the tests demonstrated ability to observe the variability in the operational parameters of the cooler following change in number of environmental and constructional parameters. The data acquired indicated vital importance of the stack porosity and frequency of the acoustic wave on performance of the thermoacoustic device, which corresponds to the data presented in the literature.

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“…Ever since development of pulse tube refrigerators, many mathematical models such as the isothermal model, second‐order isothermal model, adiabatic model, enthalpy flow model, phasor analysis, and numerical models have been proposed by various researchers to predict the theoretical cooling power and coefficient of performance (COP). The exergy model developed by Razani et al argued that the regenerator is the primary source of exergy destruction and entropy generation.…”

Section: Introductionmentioning

confidence: 99%

Optimization of an inertance pulse tube refrigerator using the particle swarm optimization algorithm

Panda

Rout

2019

Heat Trans. Asian Res.

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In this study, a particle swarm optimization method is employed to find the optimal operating parameters and geometrical parameters, which maximize the coefficient of performance (COP) of an inertance pulse tube refrigerator (IPTR). The considered decision variables of the IPTR are the charging pressure, which varies from 15 to 25 bar, operating frequency varying from 20 to 60 Hz, geometrical parameters, such as diameter varying from 15.0 to 25.00 mm, and length varying from 40.0 to 70 mm of the regenerator; diameter varying from 12.0 to 20.00 mm and length varying from 40.0 to 80 mm of the pulse tube; and diameter varying from 2.0 to 6.00 mm and length varying from 1.0 to 3.0 m of the inertance tube. A 1D numerical model, based on the finite volume discretization of governing equations has been selected to build the initial design matrix and solve the governing continuity, momentum, and energy equations. Analysis of variance is performed using the result obtained from the numerical simulation to visualize the variations of COP as a combination of various input parameters. It is observed that after optimizing the input parameters, the COP of the IPTR increases by 15.14%. K E Y W O R D S ANOVA, COP, IPTR, PSO, RSM PANDA AND ROUT | 3509precisely the flow physics at a low operating frequency. Ashwini et al 36 used a thermal nonequilibrium model to visualize variations of the temperature of the solid. Rout et al 37 investigated the effect of porosity of the regenerator on the cooling performance. A few more researchers used the FLUENT code to visualize the effect of thermodynamic processes, swirling flows, and so forth on the refrigeration performance. [35][36][37][38][39] Mulcahey et al 40 reported the convection instabilities generated inside the pulse tube, under the influence of gravity using FLUENT. John et al 41 proposed an approximate design method for the design of a single-stage IPTR using design parameters such as refrigeration capacity, refrigeration temperature, frequency, mean pressure, and pressure ratio using the NIST code REGEN 3.3 (for regenerator), PHASOR, and INERTANCE (a MATHCAD code developed by Radebaugh to design the inertance tube). Many users also used the 1D commercial code SAGE developed by Gedeon associates for the design and optimization of the pulse tube refrigerator. 42,43 No doubt these codes are capable enough for designing pulse tube refrigerators to achieve the targeted output, but modern technology requires high cooling capacity cryocoolers at a fixed refrigeration temperature for further performance improvement of machines used for space and defense applications. This can only be possible by optimizing the performance as a function of input parameters.Multiobjective optimization was applied to improve the performance of a PTR by Jafari et al. 44 In contrast, Rout et al 45 used NSGA-II in combination with "response surface methodology" (RSM) to visualize the simultaneous effect of more than one parameter upon the cooling performance. But for the sake of simplicity, they have consid...

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A 300 Hz high frequency thermoacoustically driven pulse tube cooler

Cited by 7 publications

References 4 publications

Multi-physics coupling in thermoacoustic devices: A review

Multi-physics coupling in thermoacoustic devices: A review

Design of simple refrigerating device for multiparametric analysis of the thermoacoustic cooling phenomenon

Optimization of an inertance pulse tube refrigerator using the particle swarm optimization algorithm

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