Display options
Cite
Gonzalez-Ayala J, Calvo Hernández A, Roco JM. From maximum power to a trade-off optimization of low-dissipation heat engines: Influence of control parameters and the role of entropy generation. Phys Rev E. 2017;95(2):022131doi: 10.1103/PhysRevE.95.022131.
Gonzalez-Ayala, J., Calvo Hernández, A., & Roco, J. M. (2017). From maximum power to a trade-off optimization of low-dissipation heat engines: Influence of control parameters and the role of entropy generation. Physical review. E, 95(2), 022131. https://doi.org/10.1103/PhysRevE.95.022131
Gonzalez-Ayala, Julian, et al. "From maximum power to a trade-off optimization of low-dissipation heat engines: Influence of control parameters and the role of entropy generation." Physical review. E vol. 95,2 (2017): 022131. doi: https://doi.org/10.1103/PhysRevE.95.022131
Gonzalez-Ayala J, Calvo Hernández A, Roco JM. From maximum power to a trade-off optimization of low-dissipation heat engines: Influence of control parameters and the role of entropy generation. Phys Rev E. 2017 Feb;95(2):022131. doi: 10.1103/PhysRevE.95.022131. Epub 2017 Feb 23. PMID: 28297927.
Copy Download .nbib Format: NLM
Share it on

Phys Rev E. 2017 Feb;95(2):022131. doi: 10.1103/PhysRevE.95.022131. Epub 2017 Feb 23.

From maximum power to a trade-off optimization of low-dissipation heat engines: Influence of control parameters and the role of entropy generation.

Physical review. E

Julian Gonzalez-Ayala, A Calvo Hernández, J M M Roco

Affiliations

  1. Departamento de Física Aplicada, Universidad de Salamanca, 37008 Salamanca, Spain.
  2. Departamento de Física Aplicada and Instituto Universitario de Física Fundamental y Matemáticas (IUFFyM), Universidad de Salamanca, 37008 Salamanca, Spain.

PMID: 28297927 DOI: 10.1103/PhysRevE.95.022131

Abstract

For a low-dissipation heat engine model we present the role of the partial contact times and the total operational time as control parameters to switch from maximum power state to maximum Ω trade-off state. The symmetry of the dissipation coefficients may be used in the design of the heat engine to offer, in such switching, a suitable compromise between efficiency gain, power losses, and entropy change. Bounds for entropy production, efficiency, and power output are presented for transitions between both regimes. In the maximum power and maximum Ω trade-off cases the relevant space of parameters are analyzed together with the configuration of minimum entropy production. A detailed analysis of the parameter's space shows physically prohibited regions in which there is no longer a heat engine and another region that is physically well behaved but is not suitable for possible optimization criteria.

Publication Types