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Improved pinch-based method to calculate the capital cost target of heat exchanger network via evolving the spaghetti structure towards low-cost matching
Shandong University, China.
Linnaeus University, Faculty of Technology, Department of Built Environment and Energy Technology.ORCID iD: 0000-0002-0588-9510
Shandong University, China.
Linnaeus University, Faculty of Technology, Department of Built Environment and Energy Technology. (Bioenergy)ORCID iD: 0000-0001-8964-116X
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2022 (English)In: Journal of Cleaner Production, ISSN 0959-6526, E-ISSN 1879-1786, Vol. 343, article id 131022Article in journal (Refereed) Published
Sustainable development
SDG 7: Ensure access to affordable, reliable, sustainable and modern energy for all, SDG 9: Build resilient infrastructure, promote inclusive and sustainable industrialization, and foster innovation, SDG 13: Take urgent action to combat climate change and its impacts by regulating emissions and promoting developments in renewable energy
Abstract [en]

Ahead of heat exchanger network (HEN) design, setting an optimal pinch temperature difference for pinch analysis depends vitally on the capital cost target. Conventional methods based on the spaghetti (SPA) structure ignoring matching optimization might result in calculated cost targets of large deviations. This work evolved the SPA structure via four stages by shifting energy towards low-cost matching. The fourth structure evolved from the SPA structure (ESPA-IV structure) with the lowest-cost matching after loops elimination forms the base to establish the ESPA method. It is validated by numerical experiment and applied to a case reported in literature, meanwhile comparisons are always made to the SPA method. The numerical experiment proves that the ESPA method can obtain capital cost targets with higher accuracy than the SPA method. The target deviations (often within ±5%) given by the ESPA method are much lower than those (well above 10%) derived by the SPA method. In the case study, the given HEN is further optimized as hinted by ESPA method results. Of two target methods, the cost target indicated by ESPA method is closer to the optimum capital cost newly derived after optimization. The high accuracy of the ESPA method is further verified.

Place, publisher, year, edition, pages
Elsevier, 2022. Vol. 343, article id 131022
Keywords [en]
Heat exchanger network, Capital cost target, Low-cost matching, Spaghetti structure, Pinch analysis, Temperature difference
National Category
Energy Engineering Chemical Process Engineering
Research subject
Technology (byts ev till Engineering), Bioenergy Technology
Identifiers
URN: urn:nbn:se:lnu:diva-110642DOI: 10.1016/j.jclepro.2022.131022ISI: 000807372500001Scopus ID: 2-s2.0-85125226463Local ID: 2022OAI: oai:DiVA.org:lnu-110642DiVA, id: diva2:1640874
Available from: 2022-02-28 Created: 2022-02-28 Last updated: 2023-06-22Bibliographically approved

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Truong, Nguyen LeLin, Leteng

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