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스택 폐열을 이용한 연료전지 자동차용 열펌프 시스템의 성능 특성에 관한 연구
전병용(Byungyong Jeon),고원빈(Wonbin Ko),박윤철(Youn Cheol Park) 대한설비공학회 2016 설비공학 논문집 Vol.28 No.8
This study was conducted to develop a heating system for a fuel cell-driven electric vehicle. The system consists of a compressor, an expansion device and three heat exchangers. A conventional air source heat exchanger is used as primary heat exchanger of the system, and an additional water source heat exchanger is used as a pre-heater to supply heat to the upstream air of the primary heat exchanger. On the other hand, the third heat exchanger consists of a water-to-refrigerant heat exchanger. The heat source of the pre-heater and the water-refrigerant heat exchanger is the waste heat from the fuel cell’s stack. In the experiment, the indoor and the outdoor air temperature were fixed, and the compressor speed, EEV opening and waste heat temperature were varied. The results indicate that the COPh of the proposed system is 3.01 when the system is operating at a 1,200 rpm compressor speed, 50% EEV opening, and 50℃ waste heat source temperature in air pre-heater operation. However, when the system uses a water-refrigerant heat exchanger, the COPh increases to up to 9.42 at the same compressor speed and waste heat source temperature with 75% EEV openings.
히트파이프와 열전소자가 결합된 일체형냉각모듈 개발에 관한 연구
고광수(Gwang-Soo Ko),박윤철(Youn Cheol Park),고원빈(Wonbin Ko),김태형(Taehyung Kim) 대한설비공학회 2013 대한설비공학회 학술발표대회논문집 Vol.2013 No.6
In this study, a combined thermoelectric device and a heat pipe cooling module performance test was conducted to determine the heat transfer characteristics of the cooling module at a condition of given room temperature with cooling airflow 1 ㎥/min. As results, the thermal dissipation is up to 624W at the given air flow condition. It has no increment even the air flow increased at the same room temperature due to the temperature limitation of the thermoelectric device.