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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
143Thermodynamics of Fuel Cells
The water mass production rate is expressed as
m
MP
nFV
HO
HO t
ec
2
kg/s=
2
()
for a stack (4.85a)
and
m
MP
nFVN
HO
HO t
ecc
2
kg/s=
2
()
for a cell. (4.85b)
In Equations 4.84 and 4.85, the number of electron charge transferred for
each mole of water produced is n
e
= 2 for a hydrogen–oxygen fuel cell.
4.8 Heat Generation in a Fuel Cell
As we have discussed before, the operating voltage (E) of a fuel cell is less
than the open circuit maximum possible voltage as current is drawn from
the cell. This is due to the fact that only a fraction of fuel energy is avail-
able in the form of Gibbs energy for conversion, and the rest represe ...
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Publisher Resources

ISBN: 9781420089684