multi phase flow

[discla]

Hi, I'm dealing with a fired heater data sheet and I'm stuck with the table showing temperature and pressure varying properties: what "Crit Temp - TC" and "Crit Press - PC" are referring to in this table? My only understanding is that I'm not dealing with a pure substance, having a single couple of pressure and temperature values in the p-T phase diagram when liquid and vapour phases coexist: could anyone please help me?

Here the files:

https://files.engineering.com/getfi...-10703_VR_HOS_Feed_Additional_Heat_Curves.pdf

https://files.engineering.com/getfi...3b0ee6&file=Pages_from_7.0_–_FURNACE_DATA.pdf

 

[Latexman]

Critical Temperature

Critical Pressure

Good Luck,
Latexman