한국신재생에너지학회:학술대회논문집
- 2008.05a
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- Pages.69-72
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- 2008
Observation of local water content and current density in the PEMFC system
고분자 전해질 연료전지의 전류밀도와 국소 함수량 관찰
Abstract
The local water contents and water transfer characteristics in the PEMFC system were investigated by numerical simulations and experiments. The performance of a lab-scale PEMFC is measured for fully humidified gases conditions and non-humidified ones. In order to observe the local water contents and water transfer characteristics inside PEMFC, the numerical simulation using CFD module on STAR-CD(es-pemfc) were conducted. The results show that the water content was increased as increasing current density, whereas it was decreased in high current density region. Then there was close correlation between high water content and internal temperature inside of MEA, and high current density was observed when internal temperature was dramatically increased.