http://chineseinput.net/에서 pinyin(병음)방식으로 중국어를 변환할 수 있습니다.
변환된 중국어를 복사하여 사용하시면 됩니다.
고온조건에서 에어컨 시스템을 이용한 전기자동차 배터리 냉각
오명수(Myoung Su Oh),안재환(Jae Hwan Ahn),우형석(Hyoung Suk Woo),강훈(Hoon Kang),김용찬(Yongchan Kim) 대한설비공학회 2012 대한설비공학회 학술발표대회논문집 Vol.2012 No.6
An electric vehicle is driven by electricity from its battery which releases heat energy. If the battery did not transfer the heat energy to outside efficiently, its temperature would start to increase. When the temperature rises above 60℃, the battery performance will drop off due to chemical breakdown which causes cycle life to decrease. Therefore, a battery cooling system is necessary to have the battery operated in an ideal working temperature range. In this study, the performance of an air-conditioning system that has two evaporators to cool the cabin and the battery down simultaneously was measured by varying the outdoor temperature and the ratio of mass flow rate. The experimental results showed the battery-cooling system could be a reasonable auxiliary cooling system.
전기자동차 에어컨의 압축기 회전수에 따른 제습 성능 특성
안재환(Jae Hwan Ahn),오명수(Myoung Su Oh),이호성(Ho Seong Lee),이주성(Joo Seong Lee),강훈(Hoon Kang),김용찬(Yongchan Kim) 대한설비공학회 2013 대한설비공학회 학술발표대회논문집 Vol.2013 No.6
When driving a car in winter or weather with high humidity, the windshield of the vehicle fogs up. The fog disturbs the driver"s view to make a problem for safety of the car and passengers. Generally, dehumidifying is a method to defog on the windshield at above the outdoor temperature of 0℃. An air-conditioner is used to dehumidify in a vehicle. In this study, a heat pump system to dehumidify in a vehicle was investigated experimentally. The performance of the heat pump system was measured by varying the compressor speed. The experimental results showed that the dehumidification rate increased by 54.% with the compressor speed from 80% to 120% and the COPL decreased by 17.1%.
이중열원을 이용한 전기자동차용 히트펌프 시스템의 난방 성능 특성에 관한 연구
우형석(Hyoung Suk Woo),안재환(Jae Hwan Ahn),오명수(Myoung Su Oh),강훈(Hoon Kang),김용찬(Yongchan Kim) 대한설비공학회 2013 설비공학 논문집 Vol.25 No.4
An electric vehicle is an environment-friendly automobile which does not emit any tailpipe pollutant. In a conventional vehicle with an internal combustion engine, the internal cabin of the vehicle is usually heated using waste heat from the engine. However, for an electric vehicle, an alternative solution for heating is required because it does not have a combustion engine. Recently, a heat pump system which is widely used for residential heating due to its higher efficiency has been studied for its use as a heating system in electric vehicles. In this study, a heat pump system utilizing air source and waste heat source from electric devices was investigated experimentally. The performance of the heat pump system was measured by varying the mass flow rate ratio. The experimental results show that the heating capacity and COP in the dual heat source heat pump were increased by 20.9% and 8.6%, respectively, from those of the air-source heat pump.