
421Fuel Cell Stack, Bipolar Plate, and Gas Flow Channel
Assuming the density of water as
HO
2
, the volume of
water generated in is ∀ = 480 m
3
/h.
Heat generation rate is given in Equation 4.101 for a fuel cell stack as
QP
E
V
gent
c
max
1
,
where
E
h
nF
max
,
,
.=
−
=
×
=
∆
f
e
248 760
296 485
1 2891
.
Substituting, we get the heat generation rate as
Q
gen
=× −
10 10
1 2891
07
1
3
.
.
.
Q
gen
= 841 kW.
Power from single cell, P
cell
= V
c
× j
c
× A
cell
= 0.7 × 0.5 × 25 × 25 = 218.75W.
Number of cell, N
cell
W
10
6
.
Table 10.1 shows variations in gas consumption rates, water production
rate, and heat generation rate for different fuel cell stack ...