Mode summary for the F4 example simulation

Objective

Size the relief valves based on required flow.

Size the pipe diameters.

Calculate the relief valve back pressures.

Sources

Specify the required flow.

Specify the required flow.

Relief Valves

Size the relief valve by selecting a letter designation for the relief valve orifice.

Report the back pressure that AVEVA Process Simulation calculates by using the downstream piping.

Calculate the required fraction of relief valve capacity.

Pipes

Calculate the approximate diameter.

Calculate the downstream pressure.

Set the inside diameter based on nominal pipe size.

Calculate the upstream pressure from the flow.

Mixers

Set the pressure to the minimum inlet pressures.

Set all outlet pressures to be the same as their respective inlet pressures.

Drum

Specify a liquid level fraction.

Calculate the vapor and liquid outlet flow.

Calculate the liquid level fraction based on the accumulated holdup volume.

Calculate the pressure from the differential mass and energy balances.

Valves

Specify the DP to size Cv.

Set the Cv to calculate the flow.

Stack

Calculate the pressure from the upstream piping.

Set the pressure to atmospheric pressure.