Abstract For over 20 years, various heat exchanger network (HEN) retrofit methods based on mathematical programming have been studied and proposed. However, determining suitable heat exchanger network retrofit designs for industries still remains a challenge. Most retrofit methods have limitations in terms of computational time and feasibility, and their proposed solutions involve mostly heat exchanger modifications and relocations which could be impractical and uneconomical. To overcome these limitations, this paper presents a robust heat exchanger network retrofit method for industrial applications which relies on mathematical programming under specific retrofit concepts and an effective solving strategy. The retrofit concepts reduce mathematical difficulties and provide heat exchanger networks that are practical for industries. The solving strategy provides a sustainable systematic solving method which guarantees good feasible solutions within a reasonable computational time. Finally, the performance of the proposed heat exchanger network retrofit method is illustrated and compared throughout three various scale examples.

中文翻译：

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使用改进的分阶段模型对工业换热器网络进行改造的稳健设计方法

摘要 20多年来，人们研究并提出了各种基于数学规划的换热网络（HEN）改造方法。然而，为工业确定合适的换热器网络改造设计仍然是一个挑战。大多数改造方法在计算时间和可行性方面都有局限性，他们提出的解决方案主要涉及热交换器的改造和重新安置，这可能是不切实际和不经济的。为了克服这些限制，本文提出了一种适用于工业应用的稳健的换热器网络改造方法，该方法依赖于特定改造概念下的数学规划和有效的解决策略。改造概念减少了数学上的困难，并提供了适用于工业的热交换器网络。该求解策略提供了一种可持续的系统求解方法，保证在合理的计算时间内得到良好的可行解。最后，通过三个不同规模的示例说明并比较了所提出的换热器网络改造方法的性能。