Entropy 2013, 15(8), 3219-3248; doi:10.3390/e15083309
Article

Limits and Optimization of Power Input or Output of Actual Thermal Cycles

* email and email
Received: 24 April 2013; in revised form: 24 June 2013 / Accepted: 6 August 2013 / Published: 12 August 2013
This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.
Abstract: In classical thermodynamic, maximum power obtained from system (or minimum power supplied to system) defined as availability (exergy), but availability term is only used for reversible systems. In reality, there is no reversible system, all systems are irreversible, because reversible cycles doesn’t include constrains like time or size and they operates in quasi-equilibrium state. Purpose of this study is to define limits of the all basic thermodynamic cycles and to provide finite-time exergy models for irreversible cycles and to obtain the maximum (or minimum) available power for irreversible (finite-time exergy) cycles. In this study, available power optimization and performance limits were defined all basic irreversible thermodynamic cycles, by using first and second law of thermodynamic. Finally, these results were evaluated in terms of cycles’ first and second law efficiency, COP, power output (or input) and exergy destruction.
Keywords: available work; finite-time thermodynamic; finite-time exergy; irreversibility; refrigeration; heat pump; power cycles
PDF Full-text Download PDF Full-Text [280 KB, uploaded 21 August 2013 12:11 CEST]

Export to BibTeX |
EndNote


MDPI and ACS Style

Açıkkalp, E.; Yamık, H. Limits and Optimization of Power Input or Output of Actual Thermal Cycles. Entropy 2013, 15, 3219-3248.

AMA Style

Açıkkalp E, Yamık H. Limits and Optimization of Power Input or Output of Actual Thermal Cycles. Entropy. 2013; 15(8):3219-3248.

Chicago/Turabian Style

Açıkkalp, Emin; Yamık, Hasan. 2013. "Limits and Optimization of Power Input or Output of Actual Thermal Cycles." Entropy 15, no. 8: 3219-3248.

Entropy EISSN 1099-4300 Published by MDPI AG, Basel, Switzerland RSS E-Mail Table of Contents Alert