Fan Flow Control of Cooling Tower with Water-side Economizer for Free Cooling Period Expansion

Yu-Jin Kim; Young-Hak Song; Hwan-Yong Kim

doi:10.22696/jkiaebs.20230013

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2023 Vol.17, Issue 3 Preview Page

Research Article

Fan Flow Control of Cooling Tower with Water-side Economizer for Free Cooling Period Expansion Water-side economizer의 Free cooling 운전 기간 확대를 위한 냉각탑 Fan 풍량 제어에 관한 연구

30 June 2023. pp. 157-165

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Abstract

Recently, various strategies have been proposed to reduce energy of Water-side economizer (WSE), and in particular, due to the increase in the construction of data centers, many studies have been conducted to reduce cooling energy. Therefore, in this study, a strategy to expand full-free cooling according to the decrease in the cooling tower outlet temperature of the cooling tower was established by increasing the cooling tower air volume for the WSE system. In addition simulation calculations were performed to analyze the effectiveness of the strategy to analyze the energy savings. According to the simulation calculation of the cooling tower fan air volume at intervals of 5% in the range of 50% ~ 100%, the energy was saved from 100% to 22.4% compared to the cooling tower fan ratio of 50%, during the representative week of partial load, a total of 100 hours of full-free cooling operation time was increased. Therefore, in order to implement the efficient operation of the WSE system, it is necessary to first consider increasing the cooling tower fan air volume as much as possible.

Keywords

Cooling tower fan air flow rate

Water-side economizer system

Condenser water temperature

Energy saving

Free cooling

키워드

냉각탑 풍량

WSE 시스템

냉각수 온도

에너지 절감

프리쿨링

References

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Information

Publisher :Korean Institute of Architectural Sustainable Environment and Building Systems
Publisher(Ko) :한국건축친환경설비학회
Journal Title :Journal of Korean Institute of Architectural Sustainable Environment and Building Systems
Journal Title(Ko) :한국건축친환경설비학회논문집
Volume : 17
No :3
Pages :157-165
Received Date : 2023-01-01
Revised Date : 2023-06-09
Accepted Date : 2023-06-12
DOI :https://doi.org/10.22696/jkiaebs.20230013

Journal of Korean Institute of Architectural Sustainable Environment and Building Systems ISSN:1976-6483(Print) 2586-0666(Online) 한국건축친환경설비학회논문집

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