Journal of the Architectural Institute of Korea Structure & Construction (대한건축학회논문집:구조계)

Architectural Institute of Korea (대한건축학회)
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Energy Performance of Air-side Economizer System for Data Center Considering Supply Temperature and Design Airflow Rate of CRAH(Computer Room Air Handler)

외기냉방시스템이 적용된 데이터센터 CRAH의 급기온도와 설계 풍량에 따른 에너지성능 분석

  • 김지혜 ((주)한일엠이씨 기술연구소) ;
  • 엄태윤 ((주)한일엠이씨 기술연구소) ;
  • 정차수 ((주)한일엠이씨)
  • Received : 2019.08.21
  • Accepted : 2019.10.31
  • Published : 2019.11.30
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Abstract

The purpose of this study is to evaluate the cooling energy saving effects of CRAH supply air temperature(SAT) and design flow rate changes when applying air-side economizer in the data center. MLC(Mechanical Load Component), which is cooling performance indicator of data center, was used to assess the effectiveness of cooling energy savings. It was computed with energy simulation (DesignBuilder) to evaluate the cooling energy performance of 8 different alternatives in a data center. The MLC was 0.31~0.32 regardless of CRAH supply temperature without air-side economizer, and 0.15 to 0.19 value with air-side economizer. That is, cooling energy can be reduced by approximately 40~55% when applying economizer. As the CRAH SAT and design flow rate changed, the MLC values were 0.16 to 0.18 and 0.15 to 0.19, respectively.

Keywords

Acknowledgement

Supported by : 한국에너지기술평가원

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