Development of a Single Stage Pulse Tube Refrigerator with Linear Compressor

Yuan, Jiayong; Maguire, J.

doi:10.1007/0-387-27533-9_22

Cited by 18 publications

(6 citation statements)

References 2 publications

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“…These measurements suggest that the PTR requires approximately 26 W of input power per watt of refrigeration capacity this is somewhat higher than the current state-of-the-art which is nominally 20 W/W [8,9]. Following implementation of each change, the pulse-tube cold head was re-assembled and tested.…”

Section: Resultsmentioning

confidence: 99%

Development of a Large-capacity, Stirling-type, Pulse-tube Refrigerator

Potratz¹,

Nellis²,

Maddocks³

et al. 2006

AIP Conference Proceedings

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This paper describes progress towards the development of a large-capacity, singlestage, Stirling-type, pulse-tube refrigerator (PTR) for high temperature superconducting power applications. Specifically, the design and fabrication of an experimental PTR is described followed by a series of design modifications which have focused on optimization of the flow transition components the hot and cold ends of the pulse-tube. Computational fluid dynamic models are described and have been used to guide the design modifications. The impact of each modification on cooler performance is discussed. The cooler is instrumented with piston displacement sensors, high-frequency pressure sensors, and thermocouples along the regenerator wall, within the cold heat exchanger gas volume, and along the pulse-tube wall. These sensors provide some characterization of the flow distribution in the regenerator and pulse-tube.

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Section: Resultsmentioning

confidence: 99%

Development of a Large-capacity, Stirling-type, Pulse-tube Refrigerator

Potratz¹,

Nellis²,

Maddocks³

et al. 2006

AIP Conference Proceedings

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“…Thermal losses were measured experimentally using the same technique as Yuan [5]. The warm up rates at fixed temperatures were recorded with different heating loads and the cooler turned off.…”

Section: Resultsmentioning

confidence: 99%

Co-Axial pulse tube for oxygen liquifaction

Emery¹,

Caughley²,

Glasson³

et al. 2012

AIP Conference Proceedings

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Industrial Research Ltd (IRL) previously developed a single-stage, inline, pulse tube for use with their metallic-diaphragm pressure wave generator (PWG), achieving 45 W of cooling power at 77 K, with 19.5 % of Carnot efficiency (based on the PV input power). This paper describes the conversion of the inline pulse tube to a co-axial configuration that provides a more accessible cold finger. Sage pulse tube simulation software was used to model the modified pulse tube and predicted 105 W of cooling power at 90 K, with an indicated input power of 1350 W. The pulse tube operated at 50 Hz, with a mean helium working pressure of 2.5 MPa and was closely coupled to a 60 ml swept volume PWG. The experimental results yielded more than 100 W @ 90 K with 2.5 MPa of gas pressure, with a lowest no load temperature of 39.7 K with 1.4 MPa of gas pressure. Details of the development, experimental results and correlations to the Sage model are discussed.

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“…The performance deteriorates significantly, along with the increase of loss and no load cooling temperature, and the decrease of the coefficient of performance (COP) (Yuan and Maguire, 2004).…”

Section: Introductionmentioning

confidence: 99%

Temperature inhomogeneity in high capacity pulse tube cryocoolers

Fang

Qiu

2015

JZUS-A

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High power pulse tube cryocoolers are expected to be a very promising candidate for high temperature superconductors (HTS) cooling. Unfortunately there are still some problems significantly deteriorating the performance of these cryocoolers, one of which is temperature inhomogeneity. Several different theories have been proposed to explain the mechanism and many factors have been indicated as contributors to the generation and development of temperature inhomogeneity. However, some relations between these factors are seldom noticed, nor classified. The underlying mechanisms are not yet clear. The paper classifies, as internal and external, factors leading to temperature inhomogeneity based on their location. We examine some apparently unreasonable assumptions that have been made and difficulties in simulation and measurement. Theoretical and experimental research on the driving mechanism and suppression of temperature inhomogeneity is reviewed, and potential analysis and measurement methods which could be used in future are identified.

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Development of a Single Stage Pulse Tube Refrigerator with Linear Compressor

Cited by 18 publications

References 2 publications

Development of a Large-capacity, Stirling-type, Pulse-tube Refrigerator

Development of a Large-capacity, Stirling-type, Pulse-tube Refrigerator

Co-Axial pulse tube for oxygen liquifaction

Temperature inhomogeneity in high capacity pulse tube cryocoolers

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