Reaction model for the AA2 example simulation

The EQOPH2 equilibrium reaction model from the simulation-specific model library calculates the ratio of hydrogen spin isomers at various temperatures. This reaction model uses experimental data from NBS Report 88123 to define the equilibrium composition. The ParaConversion curve in the simulation-specific library contains this experimental data. We use the Curve Editor in AVEVA Process Simulation to trace the equilibrium composition curve based on the graphical equilibrium data from NBS Report 8812, as shown in the following figure. The EQOPH2 reaction model uses a Submodels.CurveState submodel to access the data in the ParaConversion curve.

Figure 2: Ortho-para hydrogen conversion modeled with AVEVA Process Simulation