Energetic optimization of the performances of a hot air engine for micro-CHP systems working with a Joule or an Ericsson cycle
The micro combined heat and electrical power systems (micro-CHP) with hot air engines are well adapted for solid biomass upgrading, in particular, the Ericsson engines working with an open cycle and an external combustion. This paper presents a model of an Ericsson engine with a compression and an expansion cylinder which allows a thermodynamic optimization of the engine performances in a global approach. A sensitive analysis on the influent parameters is carried out in order to determine the optimal working conditions of the engine: temperature and pressure range, expansion cycle shape with a late intake valve closing or an early exhaust valve closing, heat transfers through the wall of the cylinders. This study, focused on thermodynamic aspects, is a first step in the design of an Ericsson engine.
Year of publication: |
2013
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Authors: | Creyx, M. ; Delacourt, E. ; Morin, C. ; Desmet, B. ; Peultier, P. |
Published in: |
Energy. - Elsevier, ISSN 0360-5442. - Vol. 49.2013, C, p. 229-239
|
Publisher: |
Elsevier |
Subject: | Ericsson engine | Joule and Ericsson cycles | Thermodynamic optimization | Engine performances | Cogeneration | Hot air engines |
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