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RISS 인기검색어
- 검색키워드
- 저자 : Hiawata Adhya Pratama(쁘라따마 히아와따 아댜) (검색결과 1 건)
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Experimental Study on Drain Ability of Water in the Flow Channels of Fuel Cell
Hiawata Adhya Pratama(쁘라따마 히아와따 아댜),Ki Woon Lee(이기운),Hie Chan Kang(강희찬) 대한기계학회 2020 대한기계학회 춘추학술대회 Vol.2020 No.8
This present study aims to investigate a relation between water-draining ability and geometries of proton exchange membrane (PEM) fuel cell flow channels by performing water-removal tests on the bipolar plate component of the fuel cell. The cathode side of the fuel cell flow field should be optimally hydrated, meaning the flow channels should allow a balanced water formation and removal to maintain a good proton conductivity in the bipolar plate and to ensure the oxygen transport to the gas diffusion layer (GDL) is not clogged.[1,2] The square-shaped bipolar plates tested in this study are all equipped with different flow fields and active areas. The water-removal tests were done by measuring the mass of each bipolar plate with its respective GDL using an electronic balance, and then, each flow field was filled with enough water to flood the entire flow field before covering it with the GDL. Air with a constant pressure of 200 kPa and volume flow rate of 0.076 L/min·cm² through the flow channels for 60 seconds. The mass difference between the bipolar plate and GDL after and before each test represents the mass of remaining water in its respective flow channels. Thus, the ratio of the volume of the remaining water to the total flow channels volume can be determined. The experiment result confirmed that the flow field with a larger active area has a better water-removal capability compared to the one with a smaller active area and same channel depth. Furthermore, the flow field with shallower channel attains less water in the flow channels compared to the flow field with a deeper channel and same active area. [그림 본문 참조]
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