化学工程2026，Vol.54Issue(8)：68-74,7.DOI:10.3969/j.issn.1005-9954.2026.08.012
换热单元阻尼结构进化调控策略优化换热网络
Optimization of heat exchanger network by damping structural evolution regulation strategy for heat exchange units
摘要
Abstract
The random walk algorithm with compulsive evolution tends to become trapped in local optima due to integer variables,as the rapid formation of core structures and the difficult survival of new units.To mitigate this issue,a damping structure evolution control strategy for heat exchange units in heat exchanger network optimization was proposed.First,a threshold control mechanism for unit generation and elimination rates was established,integrating a damping strategy with a dynamic combined step-size walking strategy to effectively regulate the structural evolution rate.When the structural change rate was too low,the strategy utilized combined step sizes to promote unit generation and elimination,thus escaping local optima.When the rate was too high,the current structure was rejected to avoid premature convergence.Second,the mechanisms by which damping strategies and dynamic combined step-size strategies influence structural evolution under different speed threshold schemes were investigated.Finally,the proposed method was applied to two typical heat exchanger network cases(15SP and 20SP).The results are 1 495 293,1 395 148 dollar/a lower than the best results from the original algorithm,respectively.This research provides a valuable new approach to optimizing complex heat exchanger networks.关键词
换热网络/优化设计/结构进化/延缓/整型变量/单元数变化速率Key words
heat exchanger network/optimize design/structural variation/delay/integral variables/rate of units number change分类
化学化工引用本文复制引用
徐兆祥,黄晓璜,肖媛,崔国民..换热单元阻尼结构进化调控策略优化换热网络[J].化学工程,2026,54(8):68-74,7.基金项目
国家自然科学基金资助项目(21978171,52406105) （21978171,52406105）
