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Energies 2012, 5(9), 3701-3722; doi:10.3390/en5093701
Article

Energy and Exergy Analysis and Optimization of Combined Heat and Power Systems. Comparison of Various Systems

1
 and 2,*
Received: 14 July 2012; in revised form: 3 September 2012 / Accepted: 19 September 2012 / Published: 24 September 2012
(This article belongs to the Special Issue Exergy Analysis of Energy Systems)
Download PDF [516 KB, uploaded 24 September 2012]
Abstract: The paper presents a comparison of various CHP system configurations, such as Vapour Turbine, Gas Turbine, Internal Combustion Engine, External Combustion Engine (Stirling, Ericsson), when different thermodynamic criteria are considered, namely the first law efficiency and exergy efficiency. Thermodynamic optimization of these systems is performed intending to maximize the exergy, when various practical related constraints (imposed mechanical useful energy, imposed heat demand, imposed heat to power ratio) or main physical limitations (limited heat availability, maximum system temperature allowed, thermo-mechanical constraints) are taken into account. A sensitivity analysis to model parameters is given. The results have shown that the various added constraints were useful for the design allowing to precise the influence of the model main parameters on the system design. Future perspective of the work and recommendations are stated.
Keywords: thermodynamics; optimization; combined heat and power systems; exergy efficiency; First Law efficiency; constraints thermodynamics; optimization; combined heat and power systems; exergy efficiency; First Law efficiency; constraints
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.

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MDPI and ACS Style

Feidt, M.; Costea, M. Energy and Exergy Analysis and Optimization of Combined Heat and Power Systems. Comparison of Various Systems. Energies 2012, 5, 3701-3722.

AMA Style

Feidt M, Costea M. Energy and Exergy Analysis and Optimization of Combined Heat and Power Systems. Comparison of Various Systems. Energies. 2012; 5(9):3701-3722.

Chicago/Turabian Style

Feidt, Michel; Costea, Monica. 2012. "Energy and Exergy Analysis and Optimization of Combined Heat and Power Systems. Comparison of Various Systems." Energies 5, no. 9: 3701-3722.


Energies EISSN 1996-1073 Published by MDPI AG, Basel, Switzerland RSS E-Mail Table of Contents Alert