Deriving Joule-Thomson Effect: CNGA Approximation

[codicil]

Hello ALL,

I am looking for the derivation of joule thompson effect to show that Uj = (nBTave^-n / Roh(ave) Cp) *Zave

where n = 3.825, B = 5287.Pave.10^1.785G
Pave in KPa(g) and Tave in K

using CNGA approximation.

Can anybody help me in this?

Thanks

Shabbir

 

[jaap de vries]

maybe this will help

 

[jaap de vries]

Maybe this will help

I assume that CNGA means California Natural Gas Association.

Make sure that you are more clear when you state you question since not everybody is a expert necessarily in your field.

Pave is better as P(avg).

I assume Z is the compressibility and G is the gas Gravity based on (Air = 1.00)

Let me know if you need more