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Stability analysis of free piston Stirling engines

Published online by Cambridge University Press:  08 March 2013

Sylvie Bégot ,
Guillaume Layes ,
François Lanzetta  and
Philippe Nika
Sylvie Bégot*
Affiliation:
Département Énergie, Institut FEMTO-ST UMR 6174, CNRS/Université de Franche-Comté/ENSMM/UTBM, avenue Jean Moulin, 90000 Belfort, France
Guillaume Layes
Affiliation:
Département Énergie, Institut FEMTO-ST UMR 6174, CNRS/Université de Franche-Comté/ENSMM/UTBM, avenue Jean Moulin, 90000 Belfort, France
François Lanzetta
Affiliation:
Département Énergie, Institut FEMTO-ST UMR 6174, CNRS/Université de Franche-Comté/ENSMM/UTBM, avenue Jean Moulin, 90000 Belfort, France
Philippe Nika
Affiliation:
Département Énergie, Institut FEMTO-ST UMR 6174, CNRS/Université de Franche-Comté/ENSMM/UTBM, avenue Jean Moulin, 90000 Belfort, France
*
ae-mail: [email protected]
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Abstract

This paper presents a stability analysis of a free piston Stirling engine. The model and the detailed calculation of pressures losses are exposed. Stability of the machine is studied by the observation of the eigenvalues of the model matrix. Model validation based on the comparison with NASA experimental results is described. The influence of operational and construction parameters on performance and stability issues is exposed. The results show that most parameters that are beneficial for machine power seem to induce irregular mechanical characteristics with load, suggesting that self-sustained oscillations could be difficult to maintain and control.

Type
Research Article
Information
The European Physical Journal - Applied Physics , Volume 61 , Issue 3 , March 2013 , 30901
Copyright
© EDP Sciences, 2013

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