I have a question concerning the phase diagram calculated by Prode Properties with GERG 2008 AGA 2017 model for the mixture (stream 4) with composition
C1 0.78 C2 0.1 C3 0.05 CO2 0.02 IC4 0.03 H2O 0.02
the diagram (see attached image) shows a red line, a black line, the critical point, the lines are not connected,
I think the red line is the water condensation line, the black line the bubble line and blue line that with specified liquid fraction, correct ?
Also, can someone explain why the lines are not connected ?
Thanks.