Simultaneous synthesis of a heat exchanger network with multiple utilities using utility substages

Title
Simultaneous synthesis of a heat exchanger network with multiple utilities using utility substages
Authors
나종걸정재흠박찬샘한종훈
Issue Date
2015-08
Publisher
Computers & chemical engineering
Citation
VOL 79-79
Abstract
Heat exchanger network synthesis (HENS) has progressed by using mathematical programming-based simultaneous methodology. Although various considerations such as non-isothermal mixing and bypass streams are applied to consider real world alternatives in modeling phase, many challenges are faced because of its properties within non-convex mixed-integer nonlinear programming (MINLP). We propose a modified superstructure, which contains a utility substage for use in considering multiple utilities in a simultaneous MINLP model. To improve model size and convergence, fixed utility locations according to temperature and series connections between utilities are suggested. The numbers of constraints, discrete, and continuous variables show that overall model size decreases compared with previous research. Thus, it is possible to expand the feasible search area for reaching the nearest global solution. The model's effectiveness and applications are exemplified by several literature problems, where it is used to deduce a network superior to that of any other reported methodology.
URI
http://pubs.kist.re.kr/handle/201004/67502
ISSN
0098-1354
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KIST Publication > Article
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