Calculating thermodynamic properties of mixtures, for example R455A
8 views (last 30 days)
Show older comments
Hi,
I got different results between Matlab and refprop, for example:
- Matlab:
HsatL=refpropm('H','P',100,'Q',0,'R455A.mix)/1000; HsatV=136.5667 (kJ/kg)
HsatV=refpropm('H','100',P,'Q',1,'R455A.mix)/1000; HsatL=376.2112 (kJ/kg)
- Refprop:
HsatV (P=100, Q=0)=129.44 (kJ/kg)
HsatL (P=100, Q=1)=369.08 (kJ/kg)
Anyone knows why and how to solve it? By the way, I use version 9.1, and I have same results when I used pure substance.
Thanks
0 Comments
Answers (1)
Torsten
on 9 Feb 2023
Moved: Torsten
on 9 Feb 2023
So you want to compare
HsatL=refpropm('H','P',100,'Q',0,'R455A.mix)/1000; HsatV=136.5667 (kJ/kg)
with
HsatL (P=100, Q=1)=369.08 (kJ/kg)
and
HsatV=refpropm('H','100',P,'Q',1,'R455A.mix)/1000; HsatL=376.2112 (kJ/kg)
with
HsatV (P=100, Q=0)=129.44 (kJ/kg)
?
But the Q-values are switched, aren't they ?
5 Comments
Torsten
on 9 Feb 2023
@Baqer Alhabeeb comment moved here:
I solved the issue by changing the Refrence State in the Refprop ^_^
Simone Moroni
on 8 Aug 2024 at 14:24
Hi, thank you. I have the same problem, I want to calculate the saturation curve of CO2-Toluene mixture. How can I change the Reference State in Refprop? Thank you
See Also
Categories
Find more on Thermal Analysis in Help Center and File Exchange
Community Treasure Hunt
Find the treasures in MATLAB Central and discover how the community can help you!
Start Hunting!