A general property of non-endoreversible thermal cycles

Angulo‐Brown, F.; Arias-Hernandez, L. A.; Páez-Hernández, Ricardo T.

doi:10.1088/0022-3727/32/12/319

Cited by 43 publications

(39 citation statements)

References 16 publications

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“…These expressions have the same qualitative behavior as Equations (3) and (6) for the case of a Newtonian heat transfer law, that is, they smoothly vary from the point for f = 0 to the Carnot point for f = 1 [14,16]. Equation (8) also leads to a reduction of the profits q compared with the MP-regime (Equation (7)), but improving the efficiency and reducing the wasted energy.…”

Section: Introductionmentioning

confidence: 85%

“…The modified ecological optimization [16] consists in the maximization of the so-called modified ecological function E M given by E M = W − ϵT 2 σ, with σ the universe entropy production and ϵ a parameter depending on the heat transfer law used in the model [16]. For the modified ecological regime, the profit function becomes [21,34] …”

Section: Optimization Of the Profit Function: Newtonian Heat Transfermentioning

confidence: 99%

“…Equation (3) gives the optimal efficiency for a Novikov power plant working at maximum profit in terms of the fractional fuel cost f when the heat fluxes in Figure 1 are given by a linear Newtonian heat transfer law. Recently, Barranco-Jiménez and Angulo-Brown [14] also studied a Novikov engine following the thermoeconomical approach used by De Vos, but by means of the so-called modified ecological optimization criterion [15,16]. The ecological criterion combines the power output (high power output) and the entropy generation rate of the power plant (low entropy production), in terms of the maximization of the following expression [15],…”

Section: Introductionmentioning

confidence: 99%

“…The so-called modified ecological optimization [16] consists in the maximization of the modified ecological function E M given by…”

Section: Introductionmentioning

confidence: 99%

“…where ϵ is a parameter depending on the heat transfer law [16]. The properties of E and E M have been discussed in several papers [17][18][19].…”

Section: Introductionmentioning

confidence: 99%

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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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Section: Introductionmentioning

confidence: 85%

Section: Optimization Of the Profit Function: Newtonian Heat Transfermentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

“…The so-called modified ecological optimization [16] consists in the maximization of the modified ecological function E M given by…”

Section: Introductionmentioning

confidence: 99%

“…where ϵ is a parameter depending on the heat transfer law [16]. The properties of E and E M have been discussed in several papers [17][18][19].…”

Section: Introductionmentioning

confidence: 99%

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

et al. 2009

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Effect of Heat Transfer Law on the Ecological Optimization of a Generalized Irreversible Carnot Engine

Zhu

Chen

Sun

et al. 2005

Open Syst. Inf. Dyn.

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The optimal ecological performance of a irreversible Carnot engine with the losses of heat-resistance, heat leak and internal irreversibility, in which the transfer between the working fluid and the heat reservoirs obeys a generalized heat transfer law Q ∝ ∆(T n ), is derived by taking an ecological optimization criterion as the objective, which consists of maximizing a function representing the best compromise between the power and entropy production rate of the heat engine. Some special examples are discusses. A numerical example is given to show the effects of heat transfer law, heat leakage and internal irreversibility on the optimal performance of the generalized irreversible heat engine. The results can provide some theoretical guidance for the designs of practical engine.

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Ecological optimization of an irreversible harmonic oscillators Carnot heat engine

Liu

Chen

et al. 2009

Sci. China Ser. G-Phys. Mech. Astron.

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A general property of non-endoreversible thermal cycles

Cited by 43 publications

References 16 publications

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

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

Effect of Heat Transfer Law on the Ecological Optimization of a Generalized Irreversible Carnot Engine

Ecological optimization of an irreversible harmonic oscillators Carnot heat engine

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