The thermodynamics of endoreversible engines

@article{Lavenda2007TheTO,
  title={The thermodynamics of endoreversible engines},
  author={B. H. Lavenda},
  journal={American Journal of Physics},
  year={2007},
  volume={75},
  pages={169-175}
}
  • B. Lavenda
  • Published 2007
  • Physics
  • American Journal of Physics
It is shown that the Curzon-Ahlborn engine, a prototype of an endoreversible engine, has the same efficiency as that of an unequally heated body that produces maximum work when perfect thermodynamic engines equalize its temperature. Maximum power output and finite-time operations are completely illusory. 
True nature of the Curzon-Ahlborn efficiency.
TLDR
It is demonstrated that the Curzon-Ahlborn efficiency should instead properly be associated with a particular case of nonlinear heat engines, and a generalized expression for the efficiency at maximum power beyond the restrictive case of linear models is derived. Expand
Optimal engine performance using inference for non-identical finite source and sink
We quantify the prior information to infer the optimal characteristics for a constrained thermodynamic process of maximum work extraction for a pair of non-identical finite systems. The total entropyExpand
DETAILED ANALYSIS OF AN ENDOREVERSIBLE FUEL CELL: MAXIMUM POWER AND OPTIMAL OPERATING TEMPERATURE DETERMINATION
Producing electrical work in consuming chemical energy, the fuel cell (FC) is forced by the 2 law to reject heat to its surrounding. However, as it occurs for any other type of engine, this thermalExpand
Thermodynamics of combined-cycle electric power plants
Published data imply an average thermal efficiency of about 0.34 for U.S. electricity generating plants. With clever use of thermodynamics and technology, modern gas and steam turbines can beExpand
Work extremum principle: structure and function of quantum heat engines.
TLDR
This work considers a class of quantum heat engines consisting of two subsystems interacting with a work-source and coupled to two separate baths at different temperatures Th>Tc, which extracts work due to the temperature difference by maximizing the extracted work under various constraints. Expand
Continuity and boundary conditions in thermodynamics: From Carnot’s efficiency to efficiencies at maximum power
Classical equilibrium thermodynamics is a theory of principles, which was built from empirical knowledge and debates on the nature and the use of heat as a means to produce motive power. By theExpand
Fourier heat transfer and the piston speed
We point out that, for an ideal gas contained in a cylinder and interacting with a reservoir isothermally, the concepts of heat transfer rate q(t) and piston’s velocity u(t) are stronglyExpand
Efficiencies of power plants, quasi-static models and the geometric-mean temperature
Abstract Observed efficiencies of industrial power plants are often approximated by the square-root formula: 1 − √T−/T+, where T+(T−) is the highest (lowest) temperature achieved in the plant. ThisExpand
The Combined Otto and Stirling Cycle Prime-Mover-Based Power Plant
ii ACKNOWLEDGMENTS iii DECLARATION v LIST OF ABBREVIATIONS AND SYMBOLS vi TABLE OF CONTENTS 1 TABLE OF FIGURES 10 TABLE OF TABLES 16 PUBLICATIONS 18
Efficiency at optimal work from finite source and sink: A probabilistic perspective
Abstract We revisit the classic thermodynamic problem of maximum work extraction from arbitrary-sized source of heat and sink, modelled as perfect gases. For a given initial state of the process, weExpand
...
1
2
...

References

SHOWING 1-9 OF 9 REFERENCES
Endoreversible thermodynamics of solar energy conversion
This is a book for every scientist interested in thermodynamics, solar energy, or both. It describes in a very clear and often subtly humoristic way the physical limits governing the conversion ofExpand
Efficiency of a Carnot engine at maximum power output
The efficiency of a Carnot engine is treated for the case where the power output is limited by the rates of heat transfer to and from the working substance. It is shown that the efficiency, η, atExpand
On the structure of Carnot's theory of heat
A simple connection is pointed out between the theory of heat formulated in Sadi Carnot's: “Réflexions sur la puissance motrice du feu” (1824) and the later Kelvin-Clausius thermodynamics. In bothExpand
Thermodynamics of an ideal generalized gas: I. Thermodynamic laws
  • B. Lavenda
  • Physics, Medicine
  • Naturwissenschaften
  • 2005
TLDR
A corollary to Carnot's theorem is proved, asserting that the ratio of the work done over a cycle to the heat absorbed to increase the temperature at constant volume is the same for all bodies at the same volume. Expand
Which mean do you mean
In this paper we establish inequalities between generalized means which include the well known result concerning the arithmetic, geometric and harmonic means. The results are derived using onlyExpand