Abstract
The so-called Novikov power plant model has been widely used to represent some actual power plants, such as nuclear electric power generators. In the present work, a thermo-economic study of a Novikov power plant model is presented under three different regimes of performance: maximum power (MP), maximum ecological function (ME) and maximum efficient power (EP). In this study, different heat transfer laws are used: The Newton’s law of cooling, the Stefan–Boltzmann radiation law, the Dulong–Petit’s law and another phenomenological heat transfer law. For the thermoeconomic optimization of power plant models, a benefit function defined as the quotient of an objective function and the total economical costs is commonly employed. Usually, the total costs take into account two contributions: a cost related to the investment and another stemming from the fuel consumption. In this work, a new cost associated to the maintenance of the power plant is also considered. With these new total costs, it is shown that under the maximum ecological function regime the plant improves its economic and energetic performance in comparison with the other two regimes. The methodology used in this paper is within the context of finite-time thermodynamics.
Highlights
During more than four decades, a branch of irreversible thermodynamics called finite-time thermodynamics (FTT) has been developed [1,2,3,4,5]
In 1995, Alexis De Vos introduced for the first time a thermoeconomic study for the Novikov plant model [15]
De Vos takes into account two costs: a cost related to the investment and another cost associated to the fuel consumption
Summary
During more than four decades, a branch of irreversible thermodynamics called finite-time thermodynamics (FTT) has been developed [1,2,3,4,5]. Made under a thermoeconomic analysis ofnamely, a Novikov plant following thermoeconomic optimal efficiencies two regimes of performance, the maximum power regime and the ecological and he found that when the Novikov model maximizes the to the the De Vos approach (with a linearregime, heat transfer law) but including a new cost associated ecological function, it reduces the rejected heat to the environment down to about 50% with respect maintenance of the power plant. In the of a Novikov plant following the De Vos approach (with a linear heat transfer optimization of the benefit functions, we take into account aofnew cost associated to the maintenance of law) but including a new cost associated to the maintenance the power plant.
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