Hi,
I am currently filling out the datasheet for a choke valve to be sent to the vendor. I am using HYSYS to provide the data.
For 2 phase flow, the critical pressure is 330 bara (the inlet HYSYS stream to the valve) and when I copy the stream and flash it, the liquid HC critical pressure is 280 bara. Please note that the datasheet requires the liquid HC critical pressure. Which value should I use (note that there is some flashing across the valve)?
Another question, does the valve Cv increase with increasing Pc or decrease?
Thanks,
Sherif