Multiperiod optimization of closed seawater circulating cooling water system

IF 4.3 3区工程技术 Q2 ENGINEERING, CHEMICAL

Frontiers of Chemical Science and Engineering Pub Date : 2025-01-10 DOI:10.1007/s11705-025-2520-y

Yihui Wang, Tingting Zhao, Wei Gao, Yufei Wang

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Abstract

Traditional open circulating cooling water systems use a lot of water and electricity to remove waste heat. In coastal areas, closed seawater circulating cooling water systems have been used as an alternative to improve cooling efficiency. However, a comprehensive comparison of the design and advantages of the two types of cooling systems is lacking. Also, the best way to match and optimize the seawater system with the circulating water system in the closed seawater circulating cooling water system has not been fully explored. In this paper, a closed seawater cooling system under multiperiod is constructed, taking into account monthly changes in environmental factors. The mixed integer nonlinear programming model is solved by using GAMS software to evaluate and compare the economics and operability of the two cooling schemes. Meanwhile, the matching relationship of the internal subsystems of the closed seawater circulating cooling water system after coupling the air coolers is studied in depth, and the cooling load is allocated reasonably. The cases show that seawater cooling saves 9.22% of circulating water and reduces the total cost by 8.93% compared with cooling tower. The cost of the closed seawater cooling system can be reduced by 24.37% after coupling air coolers, and there is a direct corresponding matching relationship between circulating water and seawater.

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闭式海水循环冷却水系统的多周期优化

传统的开放式循环冷却水系统使用大量的水和电来去除废热。在沿海地区，闭式海水循环冷却水系统已被用作提高冷却效率的替代方案。然而，缺乏对两种冷却系统的设计和优点的全面比较。在闭式海水循环冷却水系统中，海水系统与循环水系统的最佳匹配和优化方法也没有得到充分的探索。本文考虑环境因子的月变化，构建了多时段闭式海水冷却系统。利用GAMS软件求解混合整数非线性规划模型，对两种冷却方案的经济性和可操作性进行评价和比较。同时，深入研究了闭式海水循环冷却水系统内部子系统与空冷器耦合后的匹配关系，合理分配冷负荷。实例表明，与冷却塔相比，海水冷却可节约循环水9.22%，总成本降低8.93%。耦合空冷器后，闭式海水冷却系统成本可降低24.37%，循环水与海水之间存在直接的对应匹配关系。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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来源期刊

Frontiers of Chemical Science and Engineering ENGINEERING, CHEMICAL-

CiteScore

7.60

自引率

6.70%

发文量

868

审稿时长

1 months

期刊介绍： Frontiers of Chemical Science and Engineering presents the latest developments in chemical science and engineering, emphasizing emerging and multidisciplinary fields and international trends in research and development. The journal promotes communication and exchange between scientists all over the world. The contents include original reviews, research papers and short communications. Coverage includes catalysis and reaction engineering, clean energy, functional material, nanotechnology and nanoscience, biomaterials and biotechnology, particle technology and multiphase processing, separation science and technology, sustainable technologies and green processing.