N VALUE QUESTION
N VALUE QUESTION
(OP)
Can someone please help me or refer me to a good resource. I would like to know more about the 'n value' used for gas mixtures to calculate physical properties for a mixture of gases.
I would specifically like to know how to get it and the equations it is used in. I have been searching for a while with no luck on for a good reference
thank you
I would specifically like to know how to get it and the equations it is used in. I have been searching for a while with no luck on for a good reference
thank you





RE: N VALUE QUESTION
Good luck,
Latexman
RE: N VALUE QUESTION
there is an equation that gives the specific heat and is a function of 'n value', molecular weight, and maybe a couple other things for a mixture of gases.
i would like to know if anyone is familar with this and if they can explain how to derive it or refer me to something else
RE: N VALUE QUESTION
If the so-called N-value is the ratio of specifi heat capacities, aka k or γ, go to thread391-244590: specific heat ratio of a gas mixture.
RE: N VALUE QUESTION
HAZOP at www.curryhydrocarbons.ca
RE: N VALUE QUESTION
RE: N VALUE QUESTION
The equation seems to be of the form Cp = [n R]/[M (n-1)]
where
Cp = the specific heat
R = is the universal gas constant
M = molecular weight
n = the 'N value' from above (possible ratio of specific heats/or something concerning the degrees of freedom of the gas)
I still would like to know how it is derived (from the ideal gas law??) and what specifically is 'n'.
Is anyone familar with this and can help
RE: N VALUE QUESTION
Cp,m = (dC / dn)p
or
Cv,m = (dC / dn)v
see: h