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Thermodynamics at Very Long Time and Space Scales
Article

Thermoelectric Efficiency of Silicon–Germanium Alloys in Finite-Time Thermodynamics

1
Department of Mathematical and Computer Sciences, Physical Sciences and Earth Sciences, University of Messina, Viale F. Stagno d’Alcontres, 31, 98166 Messina, Italy
2
Department of Mathematics, Computer Science and Economics, University of Basilicata, Viale dell’Ateneo Lucano, 10, 85100 Potenza, Italy
*
Author to whom correspondence should be addressed.
Entropy 2020, 22(10), 1116; https://doi.org/10.3390/e22101116
Received: 30 July 2020 / Revised: 10 September 2020 / Accepted: 29 September 2020 / Published: 2 October 2020
(This article belongs to the Special Issue Finite-Time Thermodynamics)
We analyze the efficiency in terms of a thermoelectric system of a one-dimensional Silicon–Germanium alloy. The dependency of thermal conductivity on the stoichiometry is pointed out, and the best fit of the experimental data is determined by a nonlinear regression method (NLRM). The thermoelectric efficiency of that system as function of the composition and of the effective temperature gradient is calculated as well. For three different temperatures (T=300 K, T=400 K, T=500 K), we determine the values of composition and thermal conductivity corresponding to the optimal thermoelectric energy conversion. The relationship of our approach with Finite-Time Thermodynamics is pointed out. View Full-Text
Keywords: finite-time thermodynamics; Silicon–Germanium alloys; minimum of thermal conductivity; efficiency of thermoelectric systems; minimal energy dissipation finite-time thermodynamics; Silicon–Germanium alloys; minimum of thermal conductivity; efficiency of thermoelectric systems; minimal energy dissipation
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MDPI and ACS Style

Rogolino, P.; Cimmelli, V.A. Thermoelectric Efficiency of Silicon–Germanium Alloys in Finite-Time Thermodynamics. Entropy 2020, 22, 1116. https://doi.org/10.3390/e22101116

AMA Style

Rogolino P, Cimmelli VA. Thermoelectric Efficiency of Silicon–Germanium Alloys in Finite-Time Thermodynamics. Entropy. 2020; 22(10):1116. https://doi.org/10.3390/e22101116

Chicago/Turabian Style

Rogolino, Patrizia, and Vito A. Cimmelli 2020. "Thermoelectric Efficiency of Silicon–Germanium Alloys in Finite-Time Thermodynamics" Entropy 22, no. 10: 1116. https://doi.org/10.3390/e22101116

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