Proceedings of the KSME Conference (대한기계학회:학술대회논문집)
- 2008.11b
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- Pages.3114-3119
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- 2008
Numerical study on PEM fuel cell performance with variation of GDL permeability and channel geometry
기체확산층의 유동투과율과 채널 형상 변화에 따른 고분자 전해질 연료전지 성능변화 수치연구
- Published : 2008.11.05
Abstract
Relatively high convective flow exists in the under-rib regions of a gas diffusion layer (GDL) when serpentine flow fields are employed in a PEMFC. This under-rib convection is believed to be favorable for the performance of PEMFCs, by enabling more effective use of catalysts in the under-rib regions. From the fact that the under-rib convection in a GDL is directly proportional to the permeability of the GDL, computational fluid dynamics (CFD) simulations were performed to discover the relationship between the GDL permeability and the PEMFC performance. Single-, triple-, and quintuple-path parallel serpentine flow fields for