Development of an integrated loop control algorithm: Enhancing efficiency and expanding application range for water-side economizers

IF 3.5 2区工程技术 Q1 ENGINEERING, MECHANICAL

International Journal of Refrigeration-revue Internationale Du Froid Pub Date : 2025-05-13 DOI:10.1016/j.ijrefrig.2025.05.008

Kwang-hee Kim , Yu-jin Kim , Ju-wan Ha , Young-hak Song

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引用次数: 0

Abstract

Water-side economizers (WSEs) are garnering attention as a means to reduce cooling energy costs in data centers. WSEs leverage free cooling to significantly reduce the use of chillers that are employed in conventional cooling systems. However, the application of WSE is somewhat limited, as free cooling depends heavily on climate and specific cooling load patterns. This study developed and introduced an integrated loop control algorithm to improve the system efficiency of a WSE and expand the target building to a general building, thereby analyzing the energy-saving effect. The integrated loop control algorithm performs integrated control of independent circulating cooling media that circulates condenser water, chilled water, and air loops, and considers the interaction between each loop. According to the energy analysis results of applying the algorithm, it was possible to reduce energy consumption by 16 % and 20 % in data centers and large offices, respectively, compared to conventional systems. In addition, it was expected that the free cooling operation time would be extended and the efficiency of the system components would be improved.

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综合回路控制算法的开发：提高水侧省煤器效率，扩大应用范围

作为降低数据中心冷却能源成本的一种手段，水边节能器（wse）正引起人们的关注。wse利用自由冷却来显着减少传统冷却系统中使用的冷却器。然而，WSE的应用是有限的，因为自由冷却在很大程度上取决于气候和特定的冷却负荷模式。本研究开发并引入了一种集成回路控制算法，以提高水轮机的系统效率，并将目标建筑扩展到一般建筑，从而分析其节能效果。综合回路控制算法对凝汽水、冷冻水、空气回路的独立循环冷却介质进行综合控制，并考虑各回路之间的相互作用。根据应用该算法的能源分析结果，与传统系统相比，数据中心和大型办公室的能源消耗分别可以减少16%和20%。此外，预计将延长自由冷却运行时间，提高系统组件的效率。

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

International Journal of Refrigeration-revue Internationale Du Froid 工程技术-工程：机械

CiteScore

7.30

自引率

12.80%

发文量

363

审稿时长

3.7 months

期刊介绍： The International Journal of Refrigeration is published for the International Institute of Refrigeration (IIR) by Elsevier. It is essential reading for all those wishing to keep abreast of research and industrial news in refrigeration, air conditioning and associated fields. This is particularly important in these times of rapid introduction of alternative refrigerants and the emergence of new technology. The journal has published special issues on alternative refrigerants and novel topics in the field of boiling, condensation, heat pumps, food refrigeration, carbon dioxide, ammonia, hydrocarbons, magnetic refrigeration at room temperature, sorptive cooling, phase change materials and slurries, ejector technology, compressors, and solar cooling. As well as original research papers the International Journal of Refrigeration also includes review articles, papers presented at IIR conferences, short reports and letters describing preliminary results and experimental details, and letters to the Editor on recent areas of discussion and controversy. Other features include forthcoming events, conference reports and book reviews. Papers are published in either English or French with the IIR news section in both languages.