Modeling and optimization of maximum available work for irreversible gas power cycles with temperature dependent specific heat
-
Emin Açıkkalp
and
Hasan Yamık
Abstract
In classical thermodynamics, the maximum power obtained from a system is defined as exergy (availability). However, the term exergy is used for reversible cycles only; in reality, reversible cycles do not exist, and all systems are irreversible. Reversible cycles do not have such restrictions as time and dimension, and are assumed to work in an equilibrium state. The objective of this study is to obtain maximum available work for SI, CI and Brayton cycles while considering the aforementioned restrictions and assumptions. We assume that the specific heat of the working fluid varies with temperature, we define optimum compression ratios and pressure ratio in order to obtain maximum available work, and we discuss the results obtained. The design parameter most appropriate for the results obtained is presented.
The authors are very grateful to the reviewers for their valuable and constructive comments to improve the quality of the paper.
© 2015 by De Gruyter
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- Frontmatter
- Efficiency at optimal work from finite source and sink: A probabilistic perspective
- Studies on Nylon-66 membrane using aqueous solutions of potassium and lead nitrate salts as permeants
- Modeling and optimization of maximum available work for irreversible gas power cycles with temperature dependent specific heat
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Articles in the same Issue
- Frontmatter
- Efficiency at optimal work from finite source and sink: A probabilistic perspective
- Studies on Nylon-66 membrane using aqueous solutions of potassium and lead nitrate salts as permeants
- Modeling and optimization of maximum available work for irreversible gas power cycles with temperature dependent specific heat
- Investigation of oxidative phosphorylation in continuous cultures. A non-equilibrium thermodynamic approach to energy transduction for Escherichia coli in aerobic condition
- Estimation of heat loss from a cylindrical cavity receiver based on simultaneous energy and exergy analyses
- In Memoriam: Professor Bogdan Baranowski
