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| 基于小负荷换热单元保护的松弛策略优化换热网络 | |
| 引用本文： | 张璐,崔国民,刘薇薇,肖媛,徐玥,张冠华. 基于小负荷换热单元保护的松弛策略优化换热网络[J]. 计算物理, 2022, 39(3): 352-360. DOI: 10.19596/j.cnki.1001-246x.8392 |
| 作者姓名： | 张璐 崔国民 刘薇薇 肖媛 徐玥 张冠华 |
| 作者单位： | 上海理工大学能源与动力工程学院上海市动力工程多相流动与传热重点实验室,上海 200093 |
| 基金项目： | 国家自然科学基金(21978171,51976126)；;中国博士后科学基金(2020M671171)资助项目； |
| 摘 要： | WCE算法优化换热网络时，固定投资费用的存在易造成小负荷换热单元难以产生和保留，使部分尚未完全进化的结构过早被淘汰。本文建立一种固定投资费用的松弛处理方法，将固定投资费用与换热单元热负荷进行因变处理，根据换热单元热负荷的大小实时调整优化过程中的松弛力度，引导并促进小负荷换热单元的顺利产生和进化，从而增强换热网络的结构进化能力。将松弛策略应用于9SP和15SP算例，验证松弛策略促进结构进化的有效性，提升优化质量，获得的最优结果(2 903 528 ＄ ·a-1、5 115 061 ＄ ·a-1)优于文献结果。 |
| 关 键 词： | 换热网络 固定投资费用 松弛 小负荷换热单元 热负荷 |
| 收稿时间： | 2021-05-06 |
Optimization of Heat Exchanger Network Based on Relaxation Strategy of Small Heat Exchanger Protection |
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| Lu ZHANG,Guomin CUI,Weiwei LIU,Yuan XIAO,Yue XU,Guanhua ZHANG. Optimization of Heat Exchanger Network Based on Relaxation Strategy of Small Heat Exchanger Protection[J]. Chinese Journal of Computational Physics, 2022, 39(3): 352-360. DOI: 10.19596/j.cnki.1001-246x.8392 | |
| Authors: | Lu ZHANG Guomin CUI Weiwei LIU Yuan XIAO Yue XU Guanhua ZHANG |
| Affiliation: | School of Energy and Power Engineering, University of Shanghai for Science and Technology, Shanghai Key Laboratory of Multiphase Flow and Heat Transfer in Power Engineering, Shanghai 200093, China |
| Abstract: | As RWCE algorithm is used to optimize heat exchanger networks, the existence of fixed investment cost makes it difficult to produce and retain heat exchanger units with small loads. It makes structures that have not yet fully evolved be eliminated too early. We established a relaxation method of fixed investment cost. The fixed investment cost and the heat exchange of heat exchange unit are processed according to their variation. With heat exchange of heat exchange unit, relaxation strength in optimization process is adjusted in real time to guide and promote the smooth generation and evolution of small load heat exchange unit, so as to enhance structural evolution ability of heat exchange network. The relaxation strategy is applied to 9SP and 15SP examples to verify that the relaxation strategy promotes structural evolution effectively and improves optimization quality. The optimal results (2 903 528 ＄ ·a-1, 5 115 061 ＄ ·a-1) are better than those in literatures. |
| Keywords: | heat exchanger network fixed investment cost slack small load heat exchanger unit heat load |
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