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포스터 전시회 : 수치해석을 통한 배기열 회수장치 유동 특성 파악
이준호 ( Junho Lee ),한상욱 ( Sangwook Han ),김현철 ( Hyunchul Kim ),이기수 ( Geesoo Lee ),최안식 ( Ansig Choi ),서호철 ( Hocheol Suh ) 한국액체미립화학회 2015 한국액체미립화학회 학술강연회 논문집 Vol.2015 No.-
Energy efficiency of the internal combustion engine for automobile is around 30%. Other 70% of energy is discarded to the cooling loss and exhaust gas. Therefore, recycling the wasted energy can increase the energy efficiency of the internal combustion engine. An exhaust heat recovery system utilizing wasted energy is applicable without changes of existing engine design and control logic. In this study, plate type heat exchanger was analyzed in terms of the differential pressure and efficiency for exhaust heat recovery system. In the case of base heat exchanger, the recovered heat was approximately 4.7kW and the differential pressure was around 2,000~3,000Pa. Recovered heat for the improved plate type heat exchanger by considering the mass production showed the similar level. However, the differential pressure of the coolant decreased about 1,000Pa.
이준호 ( Junho Lee ),한상욱 ( Sangwook Han ),김현철 ( Hyunchul Kim ),최안식 ( Ansig Choi ) 한국액체미립화학회 2016 한국액체미립화학회 학술강연회 논문집 Vol.2016 No.-
Energy efficiency of the internal combustion engine for automobile is around 30% that shows its inefficiency. Therefore, various researches to increase the energy efficiency of the internal combustion engine vehicle have been reported. One of promising technology is the exhaust heat recovery system which harvests wasted heat form the exhaust system. In this study, the plate type heat exchanger was designed in order to improve the performance of the exhaust heat recovery system. The plate type heat exchanger for exhaust heat recovery system consists of multiple layers for the high temperature exhaust gas and the low temperature coolant, respectively. The parametric study for the base model(Casel) was carried out and analyzed such as the heat recovery and the pressure drop at each condition. In addition, the shape of exhaust heat recovery system was changed and the optimized heat exchanger model was selected in terms of performance and manufacturability. Heat recovery for the Base model(Case1) was around 4.7Kw at the design opint.