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[lee1706]

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.