Regarding the CV issue of the PSA control valve
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I would like to ask: in the Aspen adsorption software, when it comes to pressure relief in the adsorption tower, how should the CV value of the valve be set? From the instructions, I understand that a CV value of 100 means the valve is fully open. But since there is no other setting for the pipe diameter, how does the software know how long it takes to achieve pressure relief? For example, if I want the pressure relief to occur in a short time, setting the CV to 100 still results in a long calculation time. I hope someone can give me some guidance
Is the Cv here the valve flow coefficient? Can only get 100?
I’m not entirely sure either, that’s why I’m asking. Its unit is kmol/s/bar, and it doesn’t seem like the maximum value is 100; how should this CV be adjusted, and what does it mean exactly?