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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
74 Fuel Cells
3.9 Specific Heat
Specic heat is dened as the energy needed to raise the temperature of a
unit mass by a unit degree temperature. For constant volume process δw =
pdv = 0 and the rst law reduces to δQ = dU. The constant volume specic heat
is expressed as
C
m
Q
T
u
T
v
v
v
=
=
1 δ
δ
. (3.45)
For a constant pressure process, δw = pdv and the rst law reduces to δQ =
dU + PdV = dH. The constant pressure specic heat is expressed as
C
m
Q
T
h
T
p
p
p
=
=
1 δ
δ
. (3.46)
3.10 Estimation of Change in Enthalpy, Entropy,
and Gibbs Function for Ideal Gases
For ideal gases, enthalpy and internal energy are a function of temperature
only. Hence
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Publisher Resources

ISBN: 9781420089684