Finite Time Thermodynamics: Realizability Domain of Heat to Work Converters
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M. A. Zaeva
,
A. M. Tsirlin
Abstract
From the point of view of finite time thermodynamics, the performance boundaries of thermal machines are considered, taking into account the irreversibility of the heat exchange processes of the working fluid with hot and cold sources. It is shown how the kinetics of heat exchange affects the shape of the optimal cycle of a heat engine and its performance, with a focus on the energy conversion efficiency in the maximum power mode. This energy conversion efficiency can depend only on the ratio of the heat transfer coefficients to the sources or not depend on them at all. A class of kinetic functions corresponding to “natural” requirements is introduced and it is shown that for any kinetics from this class the optimal cycle consists of two isotherms and two adiabats, not only for the maximum power problem, but also for the problem of maximum energy conversion efficiency at a given power. Examples are given for calculating the parameters of the optimal cycle for the case when the heat transfer coefficient to the cold source is arbitrarily large and for kinetics in the form of a Fourier law.
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Articles in the same Issue
- Frontmatter
- Research Articles
- Numerical Exploration of MHD Radiative Micropolar Liquid Flow Driven by Stretching Sheet with Primary Slip: A Comparative Study
- Microscale Thermal Energy Transfer Between Thin Films with Vacuum Gap at Interface
- Attainability of Maximum Work and the Reversible Efficiency of Minimally Nonlinear Irreversible Heat Engines
- Modeling Phase Behavior of Semi-Clathrate Hydrates of CO2, CH4, and N2 in Aqueous Solution of Tetra-n-butyl Ammonium Fluoride
- The Energy-Momentum Tensor in Relativistic Kinetic Theory: The Role of the Center of Mass Velocity in the Transport Equations for Multicomponent Mixtures
- Finite Time Thermodynamics: Realizability Domain of Heat to Work Converters
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Articles in the same Issue
- Frontmatter
- Research Articles
- Numerical Exploration of MHD Radiative Micropolar Liquid Flow Driven by Stretching Sheet with Primary Slip: A Comparative Study
- Microscale Thermal Energy Transfer Between Thin Films with Vacuum Gap at Interface
- Attainability of Maximum Work and the Reversible Efficiency of Minimally Nonlinear Irreversible Heat Engines
- Modeling Phase Behavior of Semi-Clathrate Hydrates of CO2, CH4, and N2 in Aqueous Solution of Tetra-n-butyl Ammonium Fluoride
- The Energy-Momentum Tensor in Relativistic Kinetic Theory: The Role of the Center of Mass Velocity in the Transport Equations for Multicomponent Mixtures
- Finite Time Thermodynamics: Realizability Domain of Heat to Work Converters
- Cellulose Acetate Mixed Matrix Membranes Coated with PEG/TiO2 for Removal of Pb(II) Ions from Aqueous Solutions: Combined Experimental and Quantum Chemical Modeling Investigation
- Attributes of Activation Energy and Exponential Based Heat Source in Flow of Carreau Fluid with Cross-Diffusion Effects
