Journal of the Architectural Institute of Korea (대한건축학회논문집)

Architectural Institute of Korea (대한건축학회)
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Operation Reliability and Energy Optimization for a Hot-standby Cooling System of Data Center

핫-스탠바이 기반 냉각시스템 운전을 통한 데이터센터 운영 신뢰성 및 에너지 효율화에 관한 연구

  • Cho, Jinkyun (Dept. of Building and Plant Engineering, National Hanbat University)
  • 조진균 (국립한밭대학교 설비공학과)
  • Received : 2022.12.30
  • Accepted : 2023.03.07
  • Published : 2023.03.30
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Abstract

In a data center, a cooling system is a crucial factor in ensuring uninterrupted operation and quick response to changes in IT services. This study proposes a cooling system based on hot standby sparing (HSP) that can effectively provide redundancy and optimize energy efficiency in data centers with N+1 or more equipment required for reliable uninterrupted operation. The standby strategy adopted for ensuring high reliability in data centers was classified into HSP, warm standby (WSP), and cold standby (CSP). If the cooling system meets the redundancy requirement of N+1 or higher, which is necessary for a dedicated data center, and the configuration of VSD/VFD equipment, then the HSP-based cooling system should be considered first in terms of energy efficiency. Through a case analysis of 30 MW-class large-scale A-data centers, the CSP-based and HSP-based cooling systems were compared. The results showed that the cooling power consumption for the same design capacity was reduced by approximately 15% when applying the HSP-based system compared to the CSP system. The power usage effectiveness (PUE) of the HSP-based cooling system was 1.20, and the cooling energy cost was 163 USD/IT-kW, indicating that the HSP-based system significantly improved energy efficiency. Thus, the HSP-based cooling system is the best strategy for effectively reducing cooling energy without requiring major facility changes or investments.

Keywords

Acknowledgement

본 성과는 2022년도 과학기술정보통신부의 재원으로 한국연구재단의 지원을 받아 수행된 연구임 (No. 2022R1F1A1068262). 또한, 프로젝트 정보지원을 해주신 (주)한일엠이씨에 감사드립니다.

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