Multi-objective optimization for work-integrated heat exchange network coupled with interstage multiple utilities

Yongjian Huang, Yu Zhuang, Yafeng Xing, Linlin Liu and Jian Du

Energy, 2023, vol. 273, issue C

Abstract: Heat exchange networks and work-heat exchange networks have been effective manners for energy integration. However, the utility system is only considered at the end of streams in traditional work-heat exchange networks, which requires high-level steam and limits the possibility of using multiple utilities. To address the issue, aiming at the coupling of compression, heat exchange network and utility system, this paper proposes an extended superstructure considering inter-stage multiple utilities configuration optimization and both compression and heat exchange on branch streams. A mixed integer nonlinear programming model is established based on the superstructure, which performs multi-objective optimization with the objectives of minimum exergy consumption and minimum total annualized cost. The optimal Pareto solution is obtained by the ε-constraint method. An example with different cases is studied to illustrate the feasibility and efficacy of the proposed model, where the preferable network configurations to weigh the thermodynamic and economic performances are obtained.

Keywords: Work-heat integration; Formulization; Extended superstructure; Interstage utilities; Multi-objective optimization (search for similar items in EconPapers)
Date: 2023
References: View references in EconPapers View complete reference list from CitEc
Citations: View citations in EconPapers (2)

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Persistent link: https://EconPapers.repec.org/RePEc:eee:energy:v:273:y:2023:i:c:s0360544223006345

DOI: 10.1016/j.energy.2023.127240

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