Heat exchanger network synthesis with optimal waste heat recovery and multiple hot utilities.
The result's identifiers
Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F00216305%3A26210%2F26%3A0201251" target="_blank" >RIV/00216305:26210/26:0201251 - isvavai.cz</a>
Result on the web
<a href="https://www.sciencedirect.com/science/article/pii/S0360544225016536" target="_blank" >https://www.sciencedirect.com/science/article/pii/S0360544225016536</a>
DOI - Digital Object Identifier
<a href="http://dx.doi.org/10.1016/j.energy.2025.136011" target="_blank" >10.1016/j.energy.2025.136011</a>
Alternative languages
Result language
angličtina
Original language name
Heat exchanger network synthesis with optimal waste heat recovery and multiple hot utilities.
Original language description
Approaches for Heat Exchanger Network (HEN) synthesis have become increasingly significant in recent years because of their potential role in saving energy and tackling climate change. Unlike existing methods that rely on introducing additional stages to accommodate multiple utility options, while often neglecting the potential of waste heat recovery, this work proposes a novel mathematical optimization methodology to tackle the HEN synthesis problem and bring energy benefits of waste heat recovery. The method aims to overcome the drawbacks in existing methods related to low computational efficiency resulting from numerous discrete combinations. An enhanced stage-wise superstructure is presented to automatically optimize selections of stages covering waste heat recovery or heat recovery in hot streams, and multiple hot utilities or heat recovery in cold streams, formulated as a mixed-integer nonlinear programming (MINLP) problem. Grand composite curve (GCC) is adopted to implement preliminary simplifications for the superstructure to solve large-scale HEN problems, by cutting the inappropriate utilities according to the pinch method and minimum temperature driving force to eliminate redundant combinations. The results show that the proposed approach can provide cost-efficient solutions with lower total annual cost (TAC) due to significant reductions in energy cost, compared with previous works. Specifically, the proposed approach achieves TAC savings of 14.5 %, 3.15 %, and 4.5 % for Case 1, Case 2, and Case 3.
Czech name
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Czech description
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Classification
Type
J<sub>imp</sub> - Article in a specialist periodical, which is included in the Web of Science database
CEP classification
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OECD FORD branch
20402 - Chemical process engineering
Result continuities
Project
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Continuities
I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace
Others
Publication year
2025
Confidentiality
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů
Data specific for result type
Name of the periodical
Energy
ISSN
0360-5442
e-ISSN
1873-6785
Volume of the periodical
324
Issue of the periodical within the volume
136011
Country of publishing house
GB - UNITED KINGDOM
Number of pages
20
Pages from-to
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UT code for WoS article
001470954400001
EID of the result in the Scopus database
2-s2.0-105002293650