
497Simulation Model for Analysis and Design of Fuel Cells
Also, in deriving the interface boundary conditions, it is assumed
that the catalyst layer or the active layer thicknesses are negligible.
Boundary conditions at the electrode and gas channel interfaces
can be given by the convective conditions as described below:
At
d
aa
a
c,aa,a ch,a
zzk
T
hT T==−
) (11.66a)
At
d
cc
c
c,cc,c ch,c
zz k
T
hT T=−
), (11.66b)
where h
c,a
and h
c,c
are the convection heat transfer coefcients in the
anode and cathode gas channels, respectively.
11.5.1 A Simplified One-Dimensional Heat Transfer Model
A simplied one-dimensional model can be derived on t