Next Article in Journal / Special Issue
1-D versus 2-D Entropy Velocity Law for Water Discharge Assessment in a Rough Ditch
Previous Article in Journal
New Binary Locally Repairable Codes with Locality 2 and Uneven Availabilities for Hot Data
Previous Article in Special Issue
Entropic Equilibria Selection of Stationary Extrema in Finite Populations
Open AccessArticle

Comparative Performance Analysis of a Simplified Curzon-Ahlborn Engine

1
Área de Física de Procesos Irreversibles, Departamento de Ciencias Básicas, Universidad Autónoma Metropolitana, U-Azcapotzalco. A. San Pablo 180, Col. Reynosa, Ciudad de México CP 02200, Mexico
2
Laboratorio de Simulación y Modelado, Centro de Investigaciónen Computación, Instituto Politécnico Nacional, Av. Juan de Dios Batiz s/n UP Zacatenco, Ciudad de México CP 07738, Mexico
*
Author to whom correspondence should be addressed.
Entropy 2018, 20(9), 637; https://doi.org/10.3390/e20090637
Received: 17 July 2018 / Revised: 21 August 2018 / Accepted: 22 August 2018 / Published: 25 August 2018
(This article belongs to the Special Issue Entropy: From Physics to Information Sciences and Geometry)
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 ( τ ) obtained with the MEP and MPD regimes for all values of the parameter τ = T 2 / T 1 , where T 1 and T 2 are the hot and cold temperatures of the engine reservoirs ( T 2 < T 1 ) , 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 τ . Notably, when 0 < τ < 0.68 , the efficiency values for the MP regime are larger than those obtained with the MPD regime. Also, when 0.68 < τ < 1 , the efficiency values for the aforementioned regimes are similar. Importantly, the parameter τ plays a crucial role in the engine performance, providing guidance during the design of real power plants. View Full-Text
Keywords: Maximum Power Output (MP) regime; Maximum Power Density (MPD) regime; Maximum Efficient Power (MEP) regime; efficiency; Finite Time Thermodynamics (FTT) Maximum Power Output (MP) regime; Maximum Power Density (MPD) regime; Maximum Efficient Power (MEP) regime; efficiency; Finite Time Thermodynamics (FTT)
Show Figures

Figure 1

MDPI and ACS Style

Páez-Hernández, R.T.; Chimal-Eguía, J.C.; Ladino-Luna, D.; Velázquez-Arcos, J.M. Comparative Performance Analysis of a Simplified Curzon-Ahlborn Engine. Entropy 2018, 20, 637.

Show more citation formats Show less citations formats
Note that from the first issue of 2016, MDPI journals use article numbers instead of page numbers. See further details here.

Article Access Map by Country/Region

1
Back to TopTop