| Title |
Performance Characteristics of a Hybrid Air-Conditioner for Telecommunication Equipment Rooms |
| Authors |
김용찬 ; 최종민 ; 강훈 ; 윤준상 ; 김영배 ; 최광민 ; 이호성 |
| Keywords |
하이브리드 냉방기 ; 열밀도 ; 통신장비 ; 냉각 Hybrid air-conditioner ; Heat density ; Telecommunication equipment ; Cooling |
| 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℃. |