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First and Second Law Analysis of Fluid Flow in the Regenerator of Pulse Tube Refrigerators

[+] Author Affiliations
F. Roshanghalb, M. H. Saidi, A. Jafarian, M. Asadi

Sharif University of Technology, Tehran, Iran

F. Imanimehr

Payam-e-Nour University, Tehran, Iran

Paper No. IHTC14-22229, pp. 247-255; 9 pages
  • 2010 14th International Heat Transfer Conference
  • 2010 14th International Heat Transfer Conference, Volume 4
  • Washington, DC, USA, August 8–13, 2010
  • Conference Sponsors: Heat Transfer Division
  • ISBN: 978-0-7918-4939-2 | eISBN: 978-0-7918-3879-2
  • Copyright © 2010 by ASME


The objective of the present work is to analyze the performance of the regenerator of pulse tube refrigerators. Hydrodynamic and thermal behavior of the regenerator is investigated in this respect. To consider the system performance, a system of conservation equations including two energy equations for the regenerator as a porous media is employed. The present model considers one dimensional periodic unsteady compressible flow in the regenerator. The conservation equations are transformed by implementing the volumetric average scheme. Method of harmonic approximation is employed to derive an analytical solution. To explore the system performance, net energy flow and entropy generation minimization technique is applied in order to calculate the regenerator first and second law efficiencies. The effect of geometry and operating key parameters on the regenerator performance are considered as well.

Copyright © 2010 by ASME



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