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Publisher DOI: 10.3390/en12050784
Title: Cost-optimal heat exchanger network synthesis based on a flexible cost functions framework
Language: English
Authors: Rathjens, Matthias 
Fieg, Georg 
Keywords: heat exchanger network;HEN;synthesis;optimization;direct heat integration;indirect heat integration;piping;pumping
Issue Date: 26-Feb-2019
Publisher: Multidisciplinary Digital Publishing Institute
Source: Energies 12 (5): 784 (2019)
Journal or Series Name: Energies 
Abstract (english): 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.
DOI: 10.15480/882.2107
ISSN: 1996-1073
Other Identifiers: doi: 10.3390/en12050784
Institute: Prozess- und Anlagentechnik V-4 
Type: (wissenschaftlicher) Artikel
Project: Open Access Publizieren 2018 - 2019 / TU Hamburg 
License: CC BY 4.0 (Attribution) CC BY 4.0 (Attribution)
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