지역별 프리쿨링 시스템의 에너지 절감 분석
Analysis of Energy Reduction of Free Cooling System with Regions of South Korea
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Using low outdoor temperature, free cooling system is used in a data center or industrial air-conditioning for energy saving. Because use of IT equipment has increased in some office building recently, there is a growing trend towards using free cooing system. Free cooling system performance is influenced by outdoor temperature. Therefore the performance is different with regions. In this study, performance characteristic of free cooling system is analysed and energy reduction is compared with some regions. Selected regions are 4 cities; including Ulsan analyzed in preceding research, Seoul, ChunCheon and Daejeon. The Aspentech software HYSYS 8.0v was used to conduct the analysis of free cooling system based on temperature per hour of 4 cities in 2013, respectively. The main result is following as. Free cooing system in this study has energy saving effect when outdoor temperature below 7℃. Becuase temperature of Chuncheon is relatively low, using free cooling system can conserve most air-conditioning energy. Energy reduction amount of Seoul is 11%, Chuncheon is 17.5%, Deajeon is 15%, Ulsan is 14%. In case of large scale of air-conditioning, it is reasonable to use free cooling system although the system is used in Seoul
Abstract
Using low outdoor temperature, free cooling system is used in a data center or industrial air-conditioning for energy saving. Because use of IT equipment has increased in some office building recently, there is a growing trend towards using free cooing system. Free cooling system performance is influenced by outdoor temperature. Therefore the performance is different with regions. In this study, performance characteristic of free cooling system is analysed and energy reduction is compared with some regions. Selected regions are 4 cities; including Ulsan analyzed in preceding research, Seoul, ChunCheon and Daejeon. The Aspentech software HYSYS 8.0v was used to conduct the analysis of free cooling system based on temperature per hour of 4 cities in 2013, respectively. The main result is following as. Free cooing system in this study has energy saving effect when outdoor temperature below 7℃. Becuase temperature of Chuncheon is relatively low, using free cooling system can conserve most air-conditioning energy. Energy reduction amount of Seoul is 11%, Chuncheon is 17.5%, Deajeon is 15%, Ulsan is 14%. In case of large scale of air-conditioning, it is reasonable to use free cooling system although the system is used in Seoul
참고문헌 (5)
- 조진균, "고밀도 내부부하 중심 건물의 에너지 절약적 공조방식에 대한 연구", 설비공학 논문집, 22(8), pp.530~537 (2010), 대한설비공학회
- Kim. S. H, "A Studdy on the Analysis of Energy Performance and Economic Feasibility of Free Cooling System", pp.2005
- Kim. B. S, "Saving of Free Cooling System", Summer Annual Conference of Society of Air-conditioning and refrigerating engineers of Korea, pp.394~397 (2010)
- 김영민, "전력절감형 외기 냉방시스템", 한국동력기계공학회지, 17(4), pp.12~16 (2013), 한국동력기계공학회
- 윤정인, "데이터 센터의 외기냉수냉방 시스템에 대한 에너지 절감효과 분석", 한국동력기계공학회지, 18(3), pp.73~78 (2014), 한국동력기계공학회[DOI]