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Fuel Cells
book

Fuel Cells

by Shripad T. Revankar, Pradip Majumdar
May 2014
Beginner to intermediate content levelBeginner to intermediate
748 pages
23h 13m
English
CRC Press
Content preview from Fuel Cells
512 Fuel Cells
At the electrode–membrane interface, a heat ux discontinuity
condition is given as
n · (q
1
q
2
) = Q
gen
, (11.97)
where
q
i
= −k
i
T
i
+ ρ
i
C
pi
T
i
u
i
. (11.98)
Channel Inlet conditions:
Uniform temperature, T
i
= T
o
, and concentration, C
i
= C
o
, are used
at the channel inlets.
Inlet condition:
A uniform gas velocity condition is used at the inlet to the gas ow
channel, given as
u = U
in
.
(11.99)
The inlet velocities for reactant gases are calculated based on the
total consumption rate given in terms of the total current density
and stoichiometric ratio.
uU
I
nF
A
A
RT
xP
i
==
in
mea
ch
ξ
, (11.100)
where ξ = stoichiometric ratio, A
mea
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Publisher Resources

ISBN: 9781420089684