Mobile QR Code QR CODE : Korean Journal of Air-Conditioning and Refrigeration Engineering
Korean Journal of Air-Conditioning and Refrigeration Engineering

Korean Journal of Air-Conditioning and Refrigeration Engineering

ISO Journal TitleKorean J. Air-Cond. Refrig. Eng.
  • Open Access, Monthly
Open Access Monthly
  • ISSN : 1229-6422 (Print)
  • ISSN : 2465-7611 (Online)
Title A Study on Performance Standard and Test Method of CRAC/H(Computer Room Air Conditioning/Handling) Units for Data Centers
Authors Jinkyun Cho ; Sun-Jeong Kim ; Yongdae Jeong ; Beungyong Park
Page pp.235-248
ISSN 1229-6422
Keywords 데이터센터; 공조?냉각시스템; 데이터센터 냉각기기; 성능시험; IT기기 운영환경 Data center; Cooling system; CRAC/H units; Performance testing; IT environment
Abstract he purpose of this study was to establish a uniform set of requirements for rating computer room air conditioning/handling (CRAC/H) units for dedicated cooling systems in data centers. With the revolution of Industry 4.0, there are many options for data center infrastructure. The next generation of hyper-scale data centers will no longer be limited to past cooling facilities, but will seamlessly integrate the new cooling systems becoming increasingly optimized and mission-critical. For data centers, there are four basic heat removal methods, with air-cooled, water-cooled, glycol-cooled, and chilled-water system, to cool IT equipment and to transport unwanted heat to the outdoor environment. And air distribution systems, room-based, row-based, and rack-based cooling methods, have been developed to address cooling problems. Data center cooling technology is also advancing and improving and new types of CRAC/H units and cooling procedures are being developed. But performance tests of cooling systems do not fully reflect all types of CRAC/H units, data center cooling mechanisms, and data center thermal guidelines for IT environments. Standards and guidelines for performance testing were analyzed by foreign and domestic cases. In this paper, a suggested performance test condition is included in the CRAC/H classification, test requirements, and rating requirements.