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Investigation of Regenerator Matrix Through Figure of Merit Analysis

[+] Author Affiliations
Ramla Gheith, Sassi Ben Nasrallah

University of Monastir, Monastir, Tunisia

Fethi Aloui

University of Valenciennes, Valenciennes, France

Paper No. AJKFluids2015-22087, pp. V001T22A001; 7 pages
  • ASME/JSME/KSME 2015 Joint Fluids Engineering Conference
  • Volume 1: Symposia
  • Seoul, South Korea, July 26–31, 2015
  • Conference Sponsors: Fluids Engineering Division
  • ISBN: 978-0-7918-5721-2
  • Copyright © 2015 by ASME


To choose the adequate regenerator, that gives the highest Stirling engine performances, different compromises must be considered. The figure of Merits is a powerful tool to evaluate and compare the performance of different Stirling engine regenerator matrices. The figure of merits is usually defined as the ratio between the heat transfer performance and the pressure drop losses through the regenerator matrix. The figure of merits can be obtained too by calculating different rations of pressure drop Display FormulaΔPPm of regenerator volume Display FormulaVdrVE and for regenerator loss Display FormulaQ.tQ.r

Display Formula


In this study the experimental results of various Gamma Stirling engine metallic wire regenerator matrices are presented. The figure of merit parameter will be estimated to determine the adequate regenerator. Then the FMSC was used to determine the best regenerator porosity and the optimal operation parameters.

Copyright © 2015 by ASME



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