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전기차 폐열 활용을 위한 오프셋 스트립 핀 열교환기에서의 열성능 분석
김준혁(Jun Hyuk Kim),임홍영(Hong Young Lim),신성홍(Sung Hong Shin),오진우(Jin Woo Oh),한욱민(Uk Min Han),박윤재(Yun Jae Park),이소라(Sora Lee),이호성(Hoseong Lee) 대한설비공학회 2022 대한설비공학회 학술발표대회논문집 Vol.2022 No.6
In this study, a new type of heat exchanger performance analysis was conducted. The new type of heat exchanger is a perpendicular flow offset strip fin type and is a multi-heat source heat exchanger, which is a different type of heat exchanger. The working fluid was R1234yf and the coolant was 50% ethylene glycol. In conclusion, The heat transfer coefficient of the coolant was obtained using the Modified Wilson plot method, and an appropriate value was obtained with an error of 1.3% from the experimental value. The heat transfer coefficient of the refrigerant was obtained by utilizing this coolant heat transfer coefficient. As a result, it was found that the offset trip fin type applied as a perpendicular flow had a large effect on the pressure drop. And as a result of comparing the heat transfer coefficients of the refrigerant and the coolant, the heat transfer coefficient of the refrigerant was 67% smaller than the heat transfer coefficient of the coolant.