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http://dx.doi.org/10.7836/kses.2014.34.3.082

Analysis of Energy Reduction of Free Cooling System with Regions of South Korea  

Yoon, Jung-In (Department of Refrigeration and air-conditioning Engineering, Pukyong University)
Son, Chang-Hyo (Department of Refrigeration and air-conditioning Engineering, Pukyong University)
Choi, Kwang-Hwan (Department of Refrigeration and air-conditioning Engineering, Pukyong University)
Baek, Seung-Moon (Department of Refrigeration and air-conditioning Engineering, Pukyong University)
Heo, Jeong-Ho (Graduated of Department of Refrigeration and air-conditioning Engineering, Pukyong University)
Kim, Young-Min (Jung-In Hitech LTD.)
Publication Information
Journal of the Korean Solar Energy Society / v.34, no.3, 2014 , pp. 82-88 More about this Journal
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 $7^{\circ}C$. 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.
Keywords
Free cooling system; Compressor work; Dry cooler; Energy conservation; Performance Analysis; HYSYS;
Citations & Related Records
Times Cited By KSCI : 2  (Citation Analysis)
연도 인용수 순위
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