Constant Volume Specific Heat

melanie

Just trying to locate specific heat constants with constant volume (not pressure), any ideas where to find this?

abercrombiems02

If you have a thermodynamic set of property tables it would be in the column with Cv (v should be a subscript) if you are looking at Cp that is the specific heat at constant pressure. They should be fairly close in most non-extreme conditions so becareful what your looking at

Dr.Brain

[latex]C_p[/latex] : Specific Heat at constant pressure
[latex]C_v[/latex] : Specific Heat at constant volume

Also [latex]C_p - C_v = R[/latex]

[latex]\frac {C_p}{C_v} = lamda[/latex]

where lamda = [latex]1 + \frac {2}{f}[/latex]

Where f=degrees of freedon

for monoatomic gas , f=3
for diatomic gas , f=3

You can solve for two expressions at the top to get Cp

BJ

quark

One correction to Dr.Brain's post. f for diatomic gases is 5

siddharth

And that's only at around room temperature's where the vibrational degree of freedom is absent. At high temperatures, f will be 7 for diatomic gases.