전산해석을 통한 고분자 전해질 연료전지 내 입구 가습조건의 영향에 관한 연구

Abstract

PEMFC(Proton Exchange Membrane Fuel Cell) is a low temperature fuel cell and has many probabilities of commercial use. However water management remains as one of serious technical problems for commercialization. It is necessary to understand the relationship between operation conditions and water behavior in PEMFC channel. In this paper, phenomena resulted from inlet temperature changes are mainly observed. If the anode inlet temperature is equal to the cathode inlet temperature, the result is predictable. If not, complex phenomena are occurred. Especially, behaviors of current density, activation loss and variables related with water are not predictable at gas inlet region. It is considered that the diffusion of water through membrane may affect to the behaviors.