Finite-time exergoeconomic performance bound for a quantum Stirling engine

Wu, Feng; Chen, Lingen; Sun, Fengrui; Chen, Wu

doi:10.1016/s0020-7225(99)00025-7

Cited by 64 publications

(26 citation statements)

References 14 publications

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“…Substituting Equations (1 6) and (1 7) into Equation (21) When Cfin = Cfout = C (CV or C, ), Equations (19) and (22) Equations (19) and (22) are the major performance relationships for an endoreversible heat engine cycle coupled to two constanttemperature reservoirs. They determine the relationships between thermal efficiency and temperature ratio of the working fluid, between profit rate and temperature ratio of the working fluid, as well as between profit rate and thermal efficiency.…”

Section: Cycle Model and Performance Analysismentioning

confidence: 99%

“…Maximising no,, with respect to y by setting axoptlay = 0 in Equation (22) yields the maximum profit rate x , , , and the optimal temperature ratio of the working fluid yo,,. Furthermore, substituting yo,, into Equation (19) after optimising UL/UH, yields q, , which is the finite-time thermodynam~c exergoeconomic limit.…”

Section: Cycle Model and Performance Analysismentioning

confidence: 99%

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Maximum profit performance for a class of universal endoreversible steady flow heat engine cycles

Zheng

Chen

Sun

et al. 2006

International Journal of Ambient Energy

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SYNOPSISThe operation of a universal steady flow endoreversible heat engine cycle mode consisting of a constant thermal-capacity heating branch, a constant thermal-capacity cooling branch and two adiabatic branches is viewed as a production process with exergy as its output. The finite time exergoeconomic performance optimisation of the engine is investigated by taking profit optimisation criterion as the objective. The relationships between profit rate and temperature ratio of the working fluid, between thermal efficiency and temperature ratio of the working fluid, as well as the optimal relationship between profit rate and efficiency of the cycle are derived. The focus of this paper is to investigate the compromised optirnisation between economics (profit) and the utilisation factor (efficiency) for endoreversible cycles. Moreover, analysis and optimisation of the model are carried out in order to investigate the effect of cycle process on the performance of the cycles, using numerical examples. The results obtained herein include the performance characteristics of Diesel, Otto, Atkinson, and Brayton cycles.

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Section: Cycle Model and Performance Analysismentioning

confidence: 99%

Section: Cycle Model and Performance Analysismentioning

confidence: 99%

Maximum profit performance for a class of universal endoreversible steady flow heat engine cycles

Zheng

Chen

Sun

et al. 2006

International Journal of Ambient Energy

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“…Similarly, the performance bound at maximum profit was termed as finite time exergoeconomic performance bound to distinguish it from the finite time thermodynamic performance bound at maximum thermodynamic output. Such a method has been extended to endoreversible two-heat-reservoir and three-heat-reservoir refrigerators and heat pumps [16][17][18][19][20][21] with the only loss of heat transfer irreversibility and to generalized irreversible Carnot heat engine with losses of heat transfer, heat leakage and internal irreversibility [22]. A similar idea was provided by Ibrahim et al [23], De Vos [24,25] and Bejan [26].…”

Section: Introductionmentioning

confidence: 99%

Finite time exergoeconomic performance for six endoreversible heat engine cycles: Unified description

Ding

Chen

Sun

2011

Applied Mathematical Modelling

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a b s t r a c tThe operation of a universal steady flow endoreversible heat engine cycle model consisting of two constant thermal-capacity heating branches, a constant thermal-capacity cooling branch and two adiabatic branches is viewed as a production process with exergy as its output. The finite time exergoeconomic performance optimization of the universal endoreversible heat engine cycle is investigated by taking profit optimization criterion as the objective. The analytical formulae for power, efficiency and profit rate function of the universal endoreversible heat engine cycle with heat resistance loss are derived. The focus of this paper is to search the compromised optimization between economics (profit) and the utilization factor (efficiency) for endoreversible cycles. Moreover, analysis and optimization of the model are carried out in order to investigate the effect of cycle process on the performance of the universal endoreversible heat engine cycle using numerical examples. The results obtained herein include the performance characteristics of six endoreversible heat engines, including Carnot, Diesel, Otto, Atkinson, Brayton and Dual cycles.

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“…This FTT economic analysis was termed as finite time exergoeconomic analysis [4][5][6][7][8] to distinguish it from the endoreversible analysis with pure thermodynamic objectives and the exergoeconomic analysis with long-run economic optimization. The effect of heat transfer laws were also investigated [9][10][11].…”

Section: Introductionmentioning

confidence: 99%

A Proposal of Ecologic Taxes Based on Thermo-Economic Performance of Heat Engine Models

et al. 2009

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Within the context of Finite-Time Thermodynamics (FTT) a simplified thermal power plant model (the so-called Novikov engine) is analyzed under economical criteria by means of the concepts of profit function and the costs involved in the performance of the power plant. In this study, two different heat transfer laws are used, the so called Newton's law of cooling and the Dulong-Petit's law of cooling. Two FTT optimization criteria for the performance analysis are used: the maximum power regime (MP) and the so-called ecological criterion. This last criterion leads the engine model towards a mode of performance that appreciably diminishes the engine's wasted energy. In this work, it is shown that the energy-unit price produced under maximum power conditions is cheaper than that produced under maximum ecological (ME) conditions. This was accomplished by using a typical definition of profits function stemming from economics. The MP-regime produces considerably more wasted energy toward the environment, thus the MP energy-unit price is subsidized by nature. Due to this fact, an ecological tax is proposed, which could be a certain function of the price difference between the MP and ME modes of power production.

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Finite-time exergoeconomic performance bound for a quantum Stirling engine

Cited by 64 publications

References 14 publications

Maximum profit performance for a class of universal endoreversible steady flow heat engine cycles

Maximum profit performance for a class of universal endoreversible steady flow heat engine cycles

Finite time exergoeconomic performance for six endoreversible heat engine cycles: Unified description

A Proposal of Ecologic Taxes Based on Thermo-Economic Performance of Heat Engine Models

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