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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
138 Fuel Cells
n
I
nF
f
e
= . (4.23b)
The current efciency, η
I
, is then dened as the ratio of the mass of fuel con-
sumed in the reaction to the mass of fuel supplied to the cell and expressed
as
η
I
e
f,in
/
=
InF
n
. (4.63)
Substituting Equation 4.23b into Equation 4.62, the current or fuel utilization
efciency can be expressed as a function of the stoichiometric factor
ηη
ξ
Ifc,fuel
f
==
1
. (4.64)
Equation 4.64 shows that for a fuel stoichiometric factor greater than one,
the current efciency of the fuel cell is less than 100%.
Physically, a current or fuel utilization efciency value represents the
fraction of the fuel converted into current. The rema ...
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Publisher Resources

ISBN: 9781420089684