摘要：The traditional circulating cooling water system regulates the flow rate through parallel pumps and valves. Due to fluctuations in operation, there will be lots of energy waste, resulting in inefficient operation of the circulating cooling water system. This research proposed a mixed-integer nonlinear programming (MINLP) method. By installing variable frequency drives (VFDs) on the pumps, changing constant-speed pumps (CSPs) into variable speed pumps (VSPs), we can regulate flow rate with valves and VSPs simulta-neously. Optimizing the system using Genetical algorithm (GA) to obtain precise operating parameters, including the configuration of VFDs, the number of CSPs and VSPs and the resistance coefficients of valve in the branch and main pipe. Sensitivity analysis of the model is carried out, and the energy-saving effect of VFD under different temperature differences, pump types and electricity prices, the operating status of the pump and the status of the pipeline are compared. The results indicate that the MINLP genetic algorithm optimization model for industrial circulating water considering variable frequency drive proposed in this paper has a wide range of applicability. It can save an average of 23 % of the total cost under different conditions, and has a promising energy saving effect.(c) 2022 Institution of Chemical Engineers. Published by Elsevier Ltd. All rights reserved.

关键字：Circulating cooling water system; Operation optimization; Variable frequency drive

ISSN号：0263-8762

卷、期、页：卷: 186页: 387-397

发表日期：2022-10-01

影响因子：3.739300

期刊分区（SCI为中科院分区）：三区

收录情况：SCIE（科学引文索引网络版）,EI（工程索引）

发表期刊名称：CHEMICAL ENGINEERING RESEARCH & DESIGN

参与作者：Feng, Xiao

通讯作者：梁家睿,李林辉,李易果

第一作者：王彧斐

论文类型：期刊论文

论文概要：梁家睿,李林辉,李易果,王彧斐,Feng, Xiao，Operation optimization of existing industrial circulating water system considering variable frequency drive，CHEMICAL ENGINEERING RESEARCH & DESIGN，2022，卷: 186页: 387-397

论文题目：Operation optimization of existing industrial circulating water system considering variable frequency drive