Hello,
I want to calculate the vessel venting rates with aspen hysys. The venting case is as below.
1. Vessel is filled with nitrogen and toxic gas at 5 barG.
2. Vessel has 3/4" nozzle and pipe bound for thermal oxidizer.
3. Length of the pipe is almost 50m (including fittings like an elbow)
4. Destination is 0.25 barG.
When we use dynamic simulation with hysys I have to set all lines with control valve but the venting line doesn't have control valve.
I'll estimate control valve's rated Cv(flow coefficient) to 50m of 3/4" pipe by hydraulic calculation. Is it okay? or do you guys have better ideas?