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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
133Thermodynamics of Fuel Cells
s
f
kJ
kmol
= 174 856.
.
The Gibbs free energy of formation is given as
ΔG
f
= ΔH
f
TΔS
f
ΔG
f
= −672,599.31 − 400 × 174.856
G
f
kJ
kmol
=−742 541 71,.
.
Reversible cell voltage
ET
GT
nF
rev
f
e
()
()
,.
,
=
=
×
672 599 31
696 485
E
rev
= 1.16 V
EE T
RT
nF
YY
YY
nn
n
n
=−
rev
e
MN
AB
MN
A
B
() ln
EE T
RT
nF
YY
YY
=−
rev
e
HO CO
CH OH
O
/
() ln
22
3
2
21
13
2

=−
×
×
116
8 314 400
696 485
2
3
1
2
2
5
21
.
.
,
ln

13
2
3
5
/
E = 1.158 V.
4.5 Fuel Cell Efficiency
A fuel cell performance may be expressed by considering different quanti-
ties such as thermodynamic efciency based on energy forms; voltage ef-
ciency based on opera
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Publisher Resources

ISBN: 9781420089684