PEMFC 유로 형상과 유입 유량 변화에 따른 차압 성능 및 균일 지수 분석

• Published in: 한국수소 및 신에너지학회 논문집 Vol. 35; no. 6; pp. 763 - 773
• Main Authors: 서병연(BYUNGYEON SEO), 오승훈(SEUNGHUN OH), 서현규(HYUN KYU SUH)
• Format: Journal Article
• Language: Korean
• Published: 한국수소및신에너지학회 2024
• Subjects: 기계공학; Differential pressure(차압); Uniformity index(균일 지수); Spatial average(공간적 평균값); Bipolar plate(분리판); PEMFC(고분자 전해질 연료전지)
• ISSN: 1738-7264; 2288-7407
• DOI: 10.7316/JHNE.2024.35.6.763

This study aims to provide fundamental data to improve proton exchange membrane fuel cell (PEMFC) performance. A physical model of the bipolar plate was reverse engineered by 3D scanning, and straight, micro-mesh, and wavy channels were analyzed. Differential pressure, internal flow characteristics, and uniformity index were evaluated under various inlet flow rates. The results show that increased inlet flow rates raised pressure and velocity, while wavy and baffled channels disturbed flow uniformity and resultsd in uneven distribution. In contrast, micro-mesh and converging-diverging straight channels promoted uniform flow and reduced pressure drop. Therefore, straight and micro-mesh channels are recommended for optimized PEMFC performance.