Hi, I am using ASPEN HYSYS Version 9.0, and got queries as following.
1. When I input control valve into HYSYS model(for dynamic), need to input pressure drop across valve. I am wondering what value is normally used. I know it depends on fluid, valve type etc., however seems I need to use most feasible value. in my case, LNG and globe valve.
2. In HYSYS Dynamic, there are 'valve opening[%]' at valve tab and 'OP' at controller tab. I cannot distinguish these, how it correlate.
I am beginner of HYSYS, therefore pleaes advise me.
thanks.