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In relation to this article, we declare that there is no conflict of interest.
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Received March 2, 2008
Accepted February 1, 2009
articles This is an Open-Access article distributed under the terms of the Creative Commons Attribution Non-Commercial License (http://creativecommons.org/licenses/bync/3.0) which permits unrestricted non-commercial use, distribution, and reproduction in any medium, provided the original work is properly cited.
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Simultaneous optimal integration of water utilization and heat exchange networks using holistic mathematical programming

School of Chemical Engineering, Dalian University of Technology, Dalian 116012, Liao Ning, PRC, China 1Department of Economics, Dalian University of Technology, Dalian 116024, Liao Ning, PRC, China 2Department of Chemical Engineering, National Cheng Kung University, Tainan 70101, Taiwan, ROC, China
hgdong@dlut.edu.cn
Korean Journal of Chemical Engineering, September 2009, 26(5), 1161-1174(14), 10.1007/s11814-009-0196-5
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Abstract

A systematic holistic mathematical programming (HMP) is proposed to formulate a mixed integer nonlinear programming (MINLP) model for one-step optimization of water-allocation and heat exchange network (WAHEN) designs with single- or multi-contaminant water streams. The proposed model formulation and solution strategy are believed to be superior to the available ones in the following aspects. First, a comprehensive representation combining two separate superstructures is adopted to capture the structural characteristics of the integrated WAHEN. Then, a hybrid optimization strategy integrating stochastic and deterministic components is developed for the resulting MINLP model and, also, an interactive iteration method is adopted based on sensitivity analysis to guide the search toward a potential global optimum. Finally, evolutionary strategies and manipulations are executed to enhance WAHEN configurations._x000D_ Two illustrative examples are presented to demonstrate the validity and advantages of the proposed approach.

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