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Cost-optimal heat exchanger network synthesis based on a flexible cost functions framework

Citation Link: https://doi.org/10.15480/882.2107
Publikationstyp
Journal Article
Publikationsdatum
2019-02-26
Sprache
English
Author
Rathjens, Matthias 
Fieg, Georg 
Institut
Prozess- und Anlagentechnik V-4 
DOI
10.15480/882.2107
TORE-URI
http://hdl.handle.net/11420/2694
Lizenz
https://creativecommons.org/licenses/by/4.0/
Enthalten in
Energies 
Volume
12
Issue
5
Article Number
784
Citation
Energies 12 (5): 784 (2019)
Publisher DOI
10.3390/en12050784
Scopus ID
2-s2.0-85062413802
Publisher
Multidisciplinary Digital Publishing Institute
Peer Reviewed
true
In this article an approach to incorporate a flexible cost functions framework into the cost-optimal design of heat exchanger networks (HENs) is presented. This framework allows the definition of different cost functions for each connection of heat source and sink independent of process stream or utility stream. Therefore, it is possible to use match-based individual factors to account for different fluid properties and resulting engineering costs. Layout-based factors for piping and pumping costs play an important role here as cost driver. The optimization of the resulting complex mixed integer nonlinear programming (MINLP) problem is solved with a genetic algorithm coupled with deterministic local optimization techniques. In order to show the functionality of the chosen approach one well studied HEN synthesis example from literature for direct heat integration is studied with standard cost functions and also considering additional piping costs. Another example is presented which incorporates indirect heat integration and related pumping and piping costs. The versatile applicability of the chosen approach is shown. The results represent designs with lower total annual costs (TAC) compared to literature.
Schlagworte
heat exchanger network
HEN
synthesis
optimization
direct heat integration
indirect heat integration
piping
pumping
DDC Class
600: Technik
620: Ingenieurwissenschaften
Projekt(e)
Open Access Publizieren 2018 - 2019 / TU Hamburg 
Entwicklung eines Werkzeugs zur automatisierten betriebs- und kostenoptimierten Lösungsfindung zur Auslegung flexibler Wärmeintegrationsmaßnahmen 
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