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¿Ü±â³Ã¹æ½Ã½ºÅÛÀÌ Àû¿ëµÈ µ¥ÀÌÅͼ¾ÅÍ CRAHÀÇ ±Þ±â¿Âµµ¿Í ¼³°è dz·®¿¡ µû¸¥ ¿¡³ÊÁö¼º´É ºÐ¼® / Energy Performance of Air-side Economizer System for Data Center Considering Supply Temperature and Design Airflow Rate of CRAH(Computer Room Air Handler) |
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±èÁöÇý(Kim, Ji-Hye) ; ¾öÅÂÀ±(Aum, Tae-Yun) ; Á¤Â÷¼ö(Jeong, Cha-Su) |
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´ëÇѰÇÃàÇÐȸ³í¹®Áý ±¸Á¶°è, Vol.35 No.11 (2019-11) |
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½ÃÀÛÆäÀÌÁö(181) ÃÑÆäÀÌÁö(8) |
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¿Ü±â³Ã¹æ½Ã½ºÅÛ; µ¥ÀÌÅͼ¾ÅÍ; ³Ã¹æºÎÇÏ¿ä¼Ò; ¿Ü±â³Ã¹æ °¡¿ë½Ã°£ ; Air-side Economizer System; Data Center; Mechanical Load Component; Free Cooling Hours |
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º» ¿¬±¸¿¡¼´Â µ¥ÀÌÅͼ¾Å͸¦ ´ë»óÀ¸·Î CRAHÀÇ ±Þ±â¿Âµµ¿Í ¼³°èdz·® º¯È¿¡ µû¸¥ ¿Ü±â³Ã¹æÀÇ ¿¡³ÊÁö Àý°¨È¿°ú¸¦ ½Ã¹Ä·¹À̼ÇÀ» ÅëÇØ Æò°¡ÇÏ¿´´Ù. ³Ã¹æ¿¡³ÊÁö Àý°¨È¿°ú´Â µ¥ÀÌÅͼ¾ÅÍ ³Ã¹æ ¼º´ÉÁöÇ¥ÀÎ MLC¸¦ Ȱ¿ëÇÏ¿© ´ë¾È°£ ºñ±³ Æò°¡ÇÏ¿´´Ù. ½Ã¹Ä·¹ÀÌ¼Ç °á°ú, ¿Ü±â³Ã¹æÀÌ Àû¿ëµÇÁö ¾ÊÀº °æ¿ìÀÇ MLC´Â ±Þ±â¿Âµµ¿Í °ü°è¾øÀÌ 0.31~0.32À̾ú°í, ¿Ü±â³Ã¹æÀÌ Àû¿ëµÈ °æ¿ìÀÇ MLC´Â ±Þ±â¿Âµµ¿¡ µû¶ó 0.16~0.18, ¼³°èdz·®¿¡ µû¶ó 0.15~0.19·Î ³ªÅ¸³µ´Ù. MLC °á°ú¸¦ ¹ÙÅÁÀ¸·Î °è»êÇÑ ¿Ü±â³Ã¹æÀÇ ¿¡³ÊÁö Àý°¨À²Àº ¾à 40~55%ÀÌ´Ù. |
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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. |