Optimal Process Paths for Endoreversible Systems

Hoffmann, Karl-Heinz; Burzler, J. M.; Fischer, Andreas; Schaller, Markus; Schubert, Sven

doi:10.1515/jnetdy.2003.015

Cited by 199 publications

(193 citation statements)

References 67 publications

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“…The obtained result η CA = 1 − T c /T h for the efficiency at maximum power (EMP) seemingly exhibits the same degree of generality as the Carnot's formula and also it describes well the efficiency of some actual thermal plants [6][7][8]. Although it turned out that η CA is not a universal result, neither it represents an upper or lower bound for the EMP [9][10][11], its close agreement with EMP for several model systems [12][13][14][15][16][17][18][19][20][21][22][23][24] ignited search for universalities in performance of heat engines.…”

Section: Introductionmentioning

confidence: 68%

Efficiency at and near maximum power of low-dissipation heat engines

Holubec

Ryabov

2015

Phys. Rev. E

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A new universality in optimization of trade-off between power and efficiency for low-dissipation Carnot cycles is presented. It is shown that any trade-off measure expressible in terms of efficiency and the ratio of power to its maximum value can be optimized independently of most details of the dynamics and of the coupling to thermal reservoirs. The result is demonstrated on two specific trade-off measures. The first one is designed for finding optimal efficiency for a given output power and clearly reveals diseconomy of engines working at maximum power. As the second example we derive universal lower and upper bounds on the efficiency at maximum trade-off given by the product of power and efficiency. The results are illustrated on a model of a diffusion-based heat engine. Such engines operate in the low-dissipation regime given that the used driving minimizes the work dissipated during the isothermal branches. The peculiarities of the corresponding optimization procedure are reviewed and thoroughly discussed.

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Section: Introductionmentioning

confidence: 68%

Efficiency at and near maximum power of low-dissipation heat engines

Holubec

Ryabov

2015

Phys. Rev. E

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“…In many man-made energy converters several design principles have been used to obtain certain optimal objectives [22][23][24][25][26]. Among these, one finds maximum power output, minimum entropy generation, maximum efficiency and several others.…”

Section: Discussionmentioning

confidence: 99%

A Simple Thermodynamic Analysis of Photosynthesis

Albarrán-Zavala

Angulo‐Brown

2007

Entropy

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Abstract:In this paper we present a comparative study of nine photosynthetic pathways by means of their thermodynamic performance. The comparison is made by using the thermal efficiency of light-to-chemical energy conversion and the so-called ecological criterion arising from finite-time thermodynamics. The application of both criteria leads to photosynthesis made by metaphytes and non sulfur purple bacteria as those of best thermodynamic performance. In spite of the simplicity of our thermodynamic approach some insights over the low overall efficiency of photosynthesis is suggested.

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“…The arbitrary temperature T i is now determined by the demand "P −→ extremal" under constant heat conductivities [56]. This results in…”

Section: Fig1 Thermodynamic Diagram Of a 2-reservoir Novikov Engine mentioning

confidence: 99%

Why so many “schools” of thermodynamics?

Muschik

2007

Forsch Ingenieurwes

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ABSTRACT. A classification representing some main branches of phenomenological nonequilibrium thermodynamics is discussed. Differences and similarities of these selected branches are explained. Starting out with basic concepts of phenomenological thermodynamics, more developed theories with different back-grounds contributing to contemporary thermodynamics are considered. Because of its vast extent, this field cannot be presented completely in a single reasonably sized paper without any omissions.

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Optimal Process Paths for Endoreversible Systems

Cited by 199 publications

References 67 publications

Efficiency at and near maximum power of low-dissipation heat engines

Efficiency at and near maximum power of low-dissipation heat engines

A Simple Thermodynamic Analysis of Photosynthesis

Why so many “schools” of thermodynamics?

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