Energetic Optimization Considering a Generalization of the Ecological Criterion in Traditional Simple-Cycle and Combined-Cycle Power Plants
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Sergio Levario-Medina
Abstract
The fundamental issue in the energetic performance of power plants, working both as traditional fuel engines and as combined-cycle turbines (gas-steam), lies in quantifying the internal irreversibilities which are associated with the working substance operating in cycles. The purpose of several irreversible energy converter models is to find objective thermodynamic functions that determine operation modes for real thermal engines and at the same time study the trade-off between energy losses per cycle and the useful energy. As those objective functions, we focus our attention on a generalization of the so-called ecological function in terms of an ϵ parameter that depends on the particular heat transfer law used in the irreversible heat engine model. In this work, we mathematically describe the configuration space of an irreversible Curzon–Ahlborn type model. The above allows to determine the optimal relations between the model parameters so that a power plant operates in physically accessible regions, taking into account internal irreversibilities, introduced in two different ways (additively and multiplicatively). In addition, we establish the conditions that the ϵ parameter must fulfill for the energy converter to work in an optimal region between maximum power output and maximum efficiency points.
Acknowledgment
We want to thank to Professor F. Angulo-Brown for his recommendations to improve this manuscript. We also thank the anonymous reviewer for his relevant comments, which made it possible to improve the article.
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© 2020 Walter de Gruyter GmbH, Berlin/Boston
Artikel in diesem Heft
- Frontmatter
- Research Articles
- Extended Nonequilibrium Variables for 1D Hyperbolic Heat Conduction
- Investigation on the Use of a Spacetime Formalism for Modeling and Numerical Simulations of Heat Conduction Phenomena
- Velocity Slip and Entropy Generation Phenomena in Thermal Transport Through Metallic Porous Channel
- Oxytactic Microorganisms and Thermo-Bioconvection Nanofluid Flow Over a Porous Riga Plate with Darcy–Brinkman–Forchheimer Medium
- Energetic Optimization Considering a Generalization of the Ecological Criterion in Traditional Simple-Cycle and Combined-Cycle Power Plants
- Two Temperature Extension of Phonon Hydrodynamics
- Endoreversible Otto Engines at Maximal Power
- Internal Variable Theory Formulated by One Extended Potential Function
Artikel in diesem Heft
- Frontmatter
- Research Articles
- Extended Nonequilibrium Variables for 1D Hyperbolic Heat Conduction
- Investigation on the Use of a Spacetime Formalism for Modeling and Numerical Simulations of Heat Conduction Phenomena
- Velocity Slip and Entropy Generation Phenomena in Thermal Transport Through Metallic Porous Channel
- Oxytactic Microorganisms and Thermo-Bioconvection Nanofluid Flow Over a Porous Riga Plate with Darcy–Brinkman–Forchheimer Medium
- Energetic Optimization Considering a Generalization of the Ecological Criterion in Traditional Simple-Cycle and Combined-Cycle Power Plants
- Two Temperature Extension of Phonon Hydrodynamics
- Endoreversible Otto Engines at Maximal Power
- Internal Variable Theory Formulated by One Extended Potential Function
