Journal article
Wave-shaping of pulse tube cryocooler components for improved performance
Cryogenics (Guildford), v 64
01 Nov 2014
Featured in Collection : UN Sustainable Development Goals @ Drexel
Abstract
The method of wave-shaping acoustic resonators is applied to an inertance type cryogenic pulse tube refrigerator (IPTR) to improve its performance. A detailed time-dependent axisymmetric experimentally validated computational fluid dynamic (CFD) model of the PTR is used to predict its performance. The continuity, momentum and energy equations are solved for both the refrigerant gas (helium) and the porous media regions (the regenerator and the three heat-exchangers) in the PTR. An improved representation of heat transfer in the porous media is achieved by employing a thermal non-equilibrium model to couple the gas and solid (porous media) energy equations. The wave-shaped regenerator and pulse tube studied have cone geometries and the effects of different cone angles and the orientation (nozzle v/s diffuser mode) on the system performance are investigated. The resultant spatio-temporal pressure, temperature and velocity fields in the regenerator and pulse tube components are evaluated. The performance of these wave-shaped PTRs is compared to the performance of a non wave-shaped system with cylindrical components. Better cooling is predicted for the cryocooler using wave-shaped components oriented in the diffuser mode. (C) 2014 Elsevier Ltd. All rights reserved.
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Details
- Title
- Wave-shaping of pulse tube cryocooler components for improved performance
- Creators
- Dion Savio Antao - Drexel UniversityBakhtier Farouk - Drexel University
- Publication Details
- Cryogenics (Guildford), v 64
- Publisher
- Elsevier
- Number of pages
- 9
- Grant note
- CBET-0853959 / US National Science Foundation; National Science Foundation (NSF)
- Resource Type
- Journal article
- Language
- English
- Academic Unit
- Mechanical Engineering and Mechanics
- Web of Science ID
- WOS:000347577600024
- Scopus ID
- 2-s2.0-85027948454
- Other Identifier
- 991019168545004721
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InCites Highlights
Data related to this publication, from InCites Benchmarking & Analytics tool:
- Web of Science research areas
- Physics, Applied
- Thermodynamics