Analysis on a Dynamic Model with One Dimension in Water Transportation of PEM Fuel Cell

Abstract

A b s t r a c tWa t e rb a l a n c eh a s a s i g n i f i c a n ti mp a c to n t h e o v e r a l lf u e lc e l lp e r f o r ma n c e .Ma i n t e n a n c e o fp r o p e rwa t e r ma n a g e me n ts h o u l dp r o v i d ea na d e q u a t eme mb r a n eh y d r a t i o na n da v o i d a n c eo fwa t e rf l o o d i n gi nt h ec a t a l y s tl a y e r a n dg a sd i f f u s i o nl a y e r .C o n s i d e r i n gt h ei mp o r t a n to fa d v a n c e dwa t e rma n a g e me n ti nP E M f u e lc e l l ,t h i ss t u d y p r o p o s e sas i mp l eo n ed i me n s i o n a lwa t e rt r a n s p o r t a t i o nmo d e lo fP E M f u e lc e l lf o ru s ei nad y n a mi cc o n d i t i o n . Th emo d e lh a sb e e nc r e a t e db ya s s u mp t i o nt h a tt h eo u t p u ti st h ewa t e rl i q u i ds a t u r a t i o nd i f f e r e n c e .Th el i q u i d s a t u r a t i o nc h a n g ei st h et o t a ld i f f e r e n c eb e t we e nt h ea d d i t i o n a lwa t e ra n dt h er e mo v a lwa t e ro nt h es y s t e m. Th e wa t e ra d d i t i o ni so b t a i n e df r o m f u e l c e l l r e a c t i o na n dt h ee l e c t r oo s mo t i cd r a g . Th ewa t e rr e mo v a l i so b t a i n e df r o m c a p i l l a r yt r a n s p o r ta n de v a p o r a t i o np r o c e s s . Th er e s u l ts h o wst h a tt h ec a p i l l a r ywa t e rt r a n s p o r to fl o w t e mp e r a t u r e f u e lc e l li sh i g hb e c a u s et h ee v a p o r a t i o nr a t ei sl o w. [논문] 한국태양에너지학회 논문집