Korean Journal of Air-Conditioning and Refrigeration Engineering (설비공학논문집)

The Society of Air-Conditioning and Refrigerating Engineers of Korea (대한설비공학회)
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Performance Characteristics of a Hybrid Air-Conditioner for Telecommunication Equipment Rooms

통신기지국용 하이브리드 냉방기의 성능특성 연구

  • Kim, Yong-Chan (Department of Mechanical Engineering, Korea University) ;
  • Choi, Jong-Min (Department of Mechanical Engineering, Hanbat National University) ;
  • Kang, Hoon (IFTP, Hanbat National University) ;
  • Yoon, Joon-Sang (Graduate School of Mechanical Engineering, Hanbat National University) ;
  • Kim, Young-Bae (Graduate School of Mechanical Engineering, Korea University) ;
  • Choi, Kwang-Min (Graduate School of Mechanical Engineering, Korea University) ;
  • Lee, Ho-Seong (Graduate School of Mechanical Engineering, Korea University)
  • 김용찬 (고려대학교 기계공학과) ;
  • 최종민 (한밭대학교 기계공학과) ;
  • 강훈 (한밭대학교 생산융합기술연구소) ;
  • 윤준상 (한밭대학교 기계공학과 대학원) ;
  • 김영배 (고려대학교 기계공학과 대학원) ;
  • 최광민 (고려대학교 기계공학과 대학원) ;
  • 이호성 (고려대학교 기계공학과 대학원)
  • Published : 2006.11.10
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Abstract

The power density and heat dissipation rate per unit area of the telecommunication equipment have been increased with the technology development in the footprint of telecommunication hardware. A proper heat dissipation method from the PCB module is very important to allow reliable operation of its electronic component. In this study, a hybrid air-conditioner for the telecommunication equipment room was designed to save energy and obtain system reliability. For high outdoor temperatures, the hybrid system operates in the vapor compression cycle, while, for low outdoor temperatures, the hybrid system works in the secondary fluid cooling cycle with no operation of the compressor. The performance of the hybrid air-conditioner was measured by varying outdoor and indoor temperatures. The hybrid air-conditioner yielded 50% energy saving compared with the conventional refrigeration system when the mode switch temperature was $8.3^{\circ}C$.

Keywords

References

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