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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
123Thermodynamics of Fuel Cells
dG = VdPSdT. (3.44d)
For an isothermal process, the change in the Gibbs function expression
reduces to
dG = VdP. (4.36)
Now, considering the ideal gas equation of state and substituting V
nRT
P
=
into Equation 4.36, we get
d
d
GnRT
P
P
= . (4.37)
TABLE 4.3
Thermodynamic Data of Hydrogen-Oxygen Fuel Cell over a Range of Temperature
Temp (K) Temp (C)
Enthalpy of
Reaction,
kJ/mol
Entropy of
Reaction,
J/mol.K
Gibbs Energy
of Reaction,
J/mol Voltage (V)
273 0 −286.6225 −166.1743 −241260 1.2513
283 10 −286.3007 −164.9659 −239620 1.2428
293 20 −285.9788 −163.8298 −237980 1.2343
298 25 −285.8185 −163.2828 −237160 1.2301
303 30 −285.6587 ...
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Publisher Resources

ISBN: 9781420089684