Performance Features of a Stationary Stochastic Novikov Engine
Institut für Physik, Technische Universität Chemnitz, 09107 Chemnitz, Germany
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Entropy 2018, 20(1), 52; https://doi.org/10.3390/e20010052
Received: 6 December 2017
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Revised: 8 January 2018
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Accepted: 8 January 2018
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Published: 12 January 2018
(This article belongs to the Special Issue Nature of Heat and Entropy: Fundamentals and Applications for Diverse and Sustainable Future)
In this article a Novikov engine with fluctuating hot heat bath temperature is presented. Based on this model, the performance measure maximum expected power as well as the corresponding efficiency and entropy production rate is investigated for four different stationary distributions: continuous uniform, normal, triangle, quadratic, and Pareto. It is found that the performance measures increase monotonously with increasing expectation value and increasing standard deviation of the distributions. Additionally, we show that the distribution has only little influence on the performance measures for small standard deviations. For larger values of the standard deviation, the performance measures in the case of the Pareto distribution are significantly different compared to the other distributions. These observations are explained by a comparison of the Taylor expansions in terms of the distributions’ standard deviations. For the considered symmetric distributions, an extension of the well known Curzon–Ahlborn efficiency to a stochastic Novikov engine is given.
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Keywords:
finite time thermodynamics; endoreversible thermodynamics; Novikov engine; heat transport; temperature fluctuations; stochastic Novikov engine
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MDPI and ACS Style
Schwalbe, K.; Hoffmann, K.H. Performance Features of a Stationary Stochastic Novikov Engine. Entropy 2018, 20, 52. https://doi.org/10.3390/e20010052
AMA Style
Schwalbe K, Hoffmann KH. Performance Features of a Stationary Stochastic Novikov Engine. Entropy. 2018; 20(1):52. https://doi.org/10.3390/e20010052
Chicago/Turabian StyleSchwalbe, Karsten, and Karl H. Hoffmann. 2018. "Performance Features of a Stationary Stochastic Novikov Engine" Entropy 20, no. 1: 52. https://doi.org/10.3390/e20010052
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