On the Dynamic Robustness of a Non-Endoreversible Engine Working in Different Operation Regimes

In this work, we focused mainly in the analysis of stability of a non-endoreversible Curzon-Ahlborn engine working in an ecological regime. For comparison purposes we also include the Maximum Efficient Power (MEP) regime taking into account the engine time delays. When the system’s dynamic stability...

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Bibliographic Details
Published in:Entropy (Basel, Switzerland) Switzerland), 2011-02, Vol.13 (2), p.422-436
Main Authors: Sanchez-Salas, Norma, Chimal-Eguia, Juan C., Guzman-Aguilar, Florencio
Format: Article
Language:English
Subjects:
ecological regime
efficient power
non-endoreversible
stability
time delay
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Summary:In this work, we focused mainly in the analysis of stability of a non-endoreversible Curzon-Ahlborn engine working in an ecological regime. For comparison purposes we also include the Maximum Efficient Power (MEP) regime taking into account the engine time delays. When the system’s dynamic stability is compared with its thermodynamics properties (efficiency and power output), we find that the temperature ratio τ = T1/T2 represents a trade-off between stability and energetic properties. When we take the non-endoreversible case, τ can increases to values greater than R (where R is the non-endoreversible parameter) but not greater than one. We reformulate an important difference between this case and the other two, Maximum Power (MP) and MEP regime, in which τ = R. Finally, we demonstrated that the total time delay does not destabilize the steady state of system. It does not seem to play a role in the dynamic thermodynamic property trade-off.
ISSN:1099-4300
1099-4300
DOI:10.3390/e13020422