SPECIFIC HEAT RATIO ON HYSYS
SPECIFIC HEAT RATIO ON HYSYS
(OP)
Hello friends ;
I'm wondering please if anyone know the difference between Cp/Cv (ent method) and Cp/Cv (gamma) on hysys
Thanks a lot !
Regards !
I'm wondering please if anyone know the difference between Cp/Cv (ent method) and Cp/Cv (gamma) on hysys
Thanks a lot !
Regards !





RE: SPECIFIC HEAT RATIO ON HYSYS
if you know H and V plus derivatives vs. P, T
you can obtain (easily) cp as dH/dT and cv from cp including contributes dV/dP and dV/dT,
these are the std. methods available in my copy of Prode, see "www.prode.com/en/properties.htm"
as far as I know for cp hysys adopts a similar procedure while cv is calculated as
cp-cv = -T*(dV/dT)^2 / (dV/dT)
there is also a semi-ideal method where cp/cv = cp / (cp - R)
while in Prode to get equivalent results you select regular (ideal) method.
RE: SPECIFIC HEAT RATIO ON HYSYS