Integration of an iterative methodology for exergoeconomic improvement of thermal systems with a process simulator

In this paper, we present the development and automated implementation of an iterative methodology for exergoeconomic improvement of thermal systems integrated with a process simulator, so as to be applicable to real, complex plants. The methodology combines recent available exergoeconomic technique...

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Bibliographic Details
Published in:Energy conversion and management 2004-09, Vol.45 (15), p.2495-2523
Main Authors: Vieira, Leonardo S., Donatelli, João L., Cruz, Manuel E.
Format: Article
Language:English
Subjects:
Applied sciences
Combined power plants
Energy
Energy. Thermal use of fuels
Exact sciences and technology
Exergoeconomic improvement
Exergy
Installations for energy generation and conversion: thermal and electrical energy
Optimization
Process simulator
Thermal systems
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Summary:In this paper, we present the development and automated implementation of an iterative methodology for exergoeconomic improvement of thermal systems integrated with a process simulator, so as to be applicable to real, complex plants. The methodology combines recent available exergoeconomic techniques with new qualitative and quantitative criteria for the following tasks: (i) identification of decision variables that affect system total cost and exergetic efficiency; (ii) hierarchical classification of components; (iii) identification of predominant terms in the component total cost; and (iv) choice of main decision variables in the iterative process. To show the strengths and potential advantages of the proposed methodology, it is here applied to the benchmark CGAM cogeneration system. The results obtained are presented and discussed in detail and are compared to those reached using a mathematical optimization procedure.
ISSN:0196-8904
1879-2227
DOI:10.1016/j.enconman.2003.11.007