The challenging of this work is to present a thorough study of implementing heat transfer intensification in heat exchanger network (HEN) retrofitting, including all details of exchanger geometry, stream bypassing and splitting, temperature‐variation of properties, LMTD and its correction, and pressure drops. This leads to very complex mixed integer nonlinear programming (MINLP) problems rarely reported before. By adopting the MILP‐based iterative approach proposed in the earlier work (Pan et al., Chem Eng Sci. 2013;104:498–524.), temperature‐variation of properties, LMTD and its correction are initialized to parameters at first, and the rest nonlinear terms are then linearized and expressed as first‐order Taylor series expansions. Finally, two iteration loops are executed to find optimal solutions. A small‐scale motivating problem and an industrial scale problem are presented to demonstrate the validity and efficiency of the proposed methods. © 2018 American Institute of Chemical Engineers AIChE J, 64: 2052–2077, 2018

中文翻译：

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考虑换热器的详细性能来强化换热器网络的传热强化

这项工作的挑战在于，对热交换器网络（HEN）的改造实施传热强化进行全面研究，包括热交换器几何形状，流旁路和分流，特性温度变化，LMTD及其校正和压力的所有详细信息。滴。这导致非常复杂的混合整数非线性规划（MINLP）问题，以前很少报道。通过采用早期工作中提出的基于MILP的迭代方法（Pan等人，Chem Eng Sci。2013; 104：498–524。），首先将特性的温度变化，LMTD及其校正初始化为参数，然后将其余的非线性项线性化，并表示为一阶泰勒级数展开。最后，执行两个迭代循环以找到最佳解。提出了一个小规模的激励问题和一个工业规模的问题，以证明所提出方法的有效性和有效性。©2018美国化学工程师学会AIChE J，64：2052–2077，2018