Process mode for the GG1 example simulation

The purpose of Process mode is to design the compressor at steady-state operation. Some important aspects include:

• Size the control valves for the required steady-state pressure drops with 50% open position.

• Set the anti-surge valve for zero flow during normal steady-state operations by using the following setup:

  • Set the header outlet ratio (OutRatio) for the anti-surge recycle streams to zero.

  • Set the anti-surge Cv to an initial value that you should validate in Dynamics mode.

  • Calculate the output variable (OP) for the anti-surge controller. Because you set the OutRatio for the anti-surge recycle streams to zero, the anti-surge flow is zero and AVEVA Process Simulation initially calculates OP as zero.

• Set the exchanger outlet temperature as required.