An engineering target-oriented multi-scenario heat exchanger network retrofit methodology with consideration of exergoeconomic assessment

Kan Wang, Jianqing Hu, Qiaoqiao Tang, Chang He (), Bingjian Zhang and Qinglin Chen ()
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Kan Wang: Sun Yat-Sen University
Jianqing Hu: Sun Yat-Sen University
Qiaoqiao Tang: Sun Yat-Sen University
Chang He: Sun Yat-Sen University
Bingjian Zhang: Sun Yat-Sen University
Qinglin Chen: Sun Yat-Sen University

Environment, Development and Sustainability: A Multidisciplinary Approach to the Theory and Practice of Sustainable Development, 2023, vol. 25, issue 1, No 17, 375-399

Abstract: Abstract Energy efficiency in process systems has attracted increasing attention due to the benefits of decreased greenhouse gas emissions and improvements in sustainability. As a vital solution, the retrofit of heat exchanger networks (HENs) mainly focuses on recombining the existing heat exchangers or modifying the HEN topology by adding/removing heat exchangers. Yet, there are still challenges that need to be addressed for HENs retrofit problems. In this paper, a systematic HENs retrofit methodology with exergoeconomic assessment is proposed. To be consistent with the actual industrial application, three retrofit scenarios, namely heat transfer area distribution retrofit, topology retrofit without additional heat exchangers, and topology retrofit with additional heat exchangers, are considered in the retrofit optimization model. A typical HEN retrofit case in the crude distillation unit is tested. The comparative results indicate that the Scenarios 2 and 3 outperform the Scenario 2 since they have a relatively high annual profit ($3.42MM and $3.47MM) and a low exergy destruction coefficient (0.321 and 0.303). This study is helpful to address the engineering target-oriented HENs retrofit problems by considering different practical retrofit levels.

Keywords: Heat exchanger networks; Retrofit; Engineering target; Exergoeconomic assessment (search for similar items in EconPapers)
Date: 2023
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DOI: 10.1007/s10668-021-02058-9

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