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Comparative Performance Analysis of a Simplified Curzon-Ahlborn Engine

This paper presents a finite-time thermodynamic optimization based on three different optimization criteria: Maximum Power Output (MP), Maximum Efficient Power (MEP), and Maximum Power Density (MPD), for a simplified Curzon-Ahlborn engine that was first proposed by Agrawal. The results obtained for...

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Detalles Bibliográficos
Autores principales: Páez-Hernández, Ricardo T., Chimal-Eguía, Juan Carlos, Ladino-Luna, Delfino, Velázquez-Arcos, Juan Manuel
Formato: Online Artículo Texto
Lenguaje:English
Publicado: MDPI 2018
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC7513161/
https://www.ncbi.nlm.nih.gov/pubmed/33265726
http://dx.doi.org/10.3390/e20090637
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author Páez-Hernández, Ricardo T.
Chimal-Eguía, Juan Carlos
Ladino-Luna, Delfino
Velázquez-Arcos, Juan Manuel
author_facet Páez-Hernández, Ricardo T.
Chimal-Eguía, Juan Carlos
Ladino-Luna, Delfino
Velázquez-Arcos, Juan Manuel
author_sort Páez-Hernández, Ricardo T.
collection PubMed
description This paper presents a finite-time thermodynamic optimization based on three different optimization criteria: Maximum Power Output (MP), Maximum Efficient Power (MEP), and Maximum Power Density (MPD), for a simplified Curzon-Ahlborn engine that was first proposed by Agrawal. The results obtained for the MP are compared with those obtained using MEP and MPD criteria. The results show that when a Newton heat transfer law is used, the efficiency values of the engine working in the MP regime are lower than the efficiency values ([Formula: see text]) obtained with the MEP and MPD regimes for all values of the parameter [Formula: see text] , where [Formula: see text] and [Formula: see text] are the hot and cold temperatures of the engine reservoirs [Formula: see text] , respectively. However, when a Dulong-Petit heat transfer law is used, the efficiency values of the engine working at MEP are larger than those obtained with the MP and the MPD regimes for all values of [Formula: see text]. Notably, when [Formula: see text] , the efficiency values for the MP regime are larger than those obtained with the MPD regime. Also, when [Formula: see text] , the efficiency values for the aforementioned regimes are similar. Importantly, the parameter [Formula: see text] plays a crucial role in the engine performance, providing guidance during the design of real power plants.
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spelling pubmed-75131612020-11-09 Comparative Performance Analysis of a Simplified Curzon-Ahlborn Engine Páez-Hernández, Ricardo T. Chimal-Eguía, Juan Carlos Ladino-Luna, Delfino Velázquez-Arcos, Juan Manuel Entropy (Basel) Article This paper presents a finite-time thermodynamic optimization based on three different optimization criteria: Maximum Power Output (MP), Maximum Efficient Power (MEP), and Maximum Power Density (MPD), for a simplified Curzon-Ahlborn engine that was first proposed by Agrawal. The results obtained for the MP are compared with those obtained using MEP and MPD criteria. The results show that when a Newton heat transfer law is used, the efficiency values of the engine working in the MP regime are lower than the efficiency values ([Formula: see text]) obtained with the MEP and MPD regimes for all values of the parameter [Formula: see text] , where [Formula: see text] and [Formula: see text] are the hot and cold temperatures of the engine reservoirs [Formula: see text] , respectively. However, when a Dulong-Petit heat transfer law is used, the efficiency values of the engine working at MEP are larger than those obtained with the MP and the MPD regimes for all values of [Formula: see text]. Notably, when [Formula: see text] , the efficiency values for the MP regime are larger than those obtained with the MPD regime. Also, when [Formula: see text] , the efficiency values for the aforementioned regimes are similar. Importantly, the parameter [Formula: see text] plays a crucial role in the engine performance, providing guidance during the design of real power plants. MDPI 2018-08-25 /pmc/articles/PMC7513161/ /pubmed/33265726 http://dx.doi.org/10.3390/e20090637 Text en © 2018 by the authors. Licensee MDPI, Basel, Switzerland. This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution (CC BY) license (http://creativecommons.org/licenses/by/4.0/).
spellingShingle Article
Páez-Hernández, Ricardo T.
Chimal-Eguía, Juan Carlos
Ladino-Luna, Delfino
Velázquez-Arcos, Juan Manuel
Comparative Performance Analysis of a Simplified Curzon-Ahlborn Engine
title Comparative Performance Analysis of a Simplified Curzon-Ahlborn Engine
title_full Comparative Performance Analysis of a Simplified Curzon-Ahlborn Engine
title_fullStr Comparative Performance Analysis of a Simplified Curzon-Ahlborn Engine
title_full_unstemmed Comparative Performance Analysis of a Simplified Curzon-Ahlborn Engine
title_short Comparative Performance Analysis of a Simplified Curzon-Ahlborn Engine
title_sort comparative performance analysis of a simplified curzon-ahlborn engine
topic Article
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC7513161/
https://www.ncbi.nlm.nih.gov/pubmed/33265726
http://dx.doi.org/10.3390/e20090637
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