Journal ArticleDOI
Thermodynamic simulation of performance of an Otto cycle with heat transfer and variable specific heats of working fluid
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In this paper, the performance of an air-standard Otto cycle with heat transfer loss and variable specific heat of working fluid is analyzed by using finite-time thermodynamics, and the relationship between the power output and the compression ratio is derived by detailed numerical examples.About:
This article is published in International Journal of Thermal Sciences.The article was published on 2005-05-01. It has received 113 citations till now. The article focuses on the topics: Otto cycle & Thermodynamic cycle.read more
Citations
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Current Trends in Finite‐Time Thermodynamics
TL;DR: Finite-time thermodynamics is to place the system of interest in contact with a time-varying environment which will coax the system along the desired path, much like guiding a horse along by waving a carrot in front of it.
Journal ArticleDOI
Progress in Finite Time Thermodynamic Studies for Internal Combustion Engine Cycles
TL;DR: This paper reviews the progress in FTT optimization for internal combustion engine (ICE) cycles from the following four aspects: the studies on the optimum performances of air standard endoreversible and irreversible ICE cycles, including Otto, Diesel, Atkinson, Brayton, Dual, Miller, Porous Medium and Universal cycles.
Journal ArticleDOI
Finite-time thermodynamic modelling and analysis of an irreversible Otto-cycle
TL;DR: In this paper, the performance of an air standard Otto-cycle is analyzed using finite-time thermodynamics, and the effects of internal irreversibility, heat-transfer loss and friction loss on the cycle performance are analyzed.
Journal ArticleDOI
Heat transfer—A review of 2005 literature
Richard J Goldstein,W. E. Ibele,Suhas V. Patankar,Terrence W. Simon,Thomas H. Kuehn,Paul J Strykowski,Kumar K. Tamma,Joachim Heberlein,Jane H. Davidson,John C. Bischof,Francis A Kulacki,Uwe Kortshagen,Sean C. Garrick,Vinod Srinivasan,Kalyanjit Ghosh,Rajat Mittal +15 more
TL;DR: A review of the heat transfer literature published in 2005 can be found in this article, where the authors restrict themselves to papers published in English through a peer-review process, with selected translations from journals published in other languages.
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Effects of heat transfer, friction and variable specific heats of working fluid on performance of an irreversible dual cycle
TL;DR: In this article, the thermodynamic performance of an air standard dual cycle with heat transfer loss, friction like term loss and variable specific heat of working fluid is analyzed, and the relationship between the power output and the compression ratio is derived by detailed numerical examples.
References
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Entropy generation minimization: The new thermodynamics of finite-size devices and finite-time processes
TL;DR: Entropy generation minimization (finite time thermodynamics, or thermodynamic optimization) is the method that combines into simple models the most basic concepts of heat transfer, fluid mechanics, and thermodynamics as mentioned in this paper.
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Finite Time Thermodynamic Optimization or Entropy Generation Minimization of Energy Systems
Lingen Chen,Chih Wu,Fengrui Sun +2 more
TL;DR: In this article, the authors reviewed the state-of-the-art of finite time thermodynamic theory and applications from the point of view of both physics and engineering, focusing on the performance optimization of thermodynamic processes and devices with finite-time and/or finite-size constraints.
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Optimal paths for thermodynamic systems: The ideal diesel cycle
TL;DR: In this paper, the authors apply the method of optimal control theory to determine the optimal piston trajectory for successively less idealized models of the Otto cycle, and the resulting increases in efficiency are of the order of 10%.
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An Explanation for Observed Compression Ratios in Internal Combustion Engines
TL;DR: In this paper, the authors compared the compression ratios, efficiencies, and work of the ideal Otto and Diesel cycles at conditions that yield maximum work per cycle, and found that the compression ratio that maximizes the work of a Diesel cycle is always higher than those for the Otto cycle at the same operating conditions, although the thermal efficiencies are nearly identical.