Correct unreasonable boundary conditions in Buildings.Applications.DataCenters.ChillerCooled.Equipment.Validation

[mwetter]

Various models in Buildings.Applications.DataCenters.ChillerCooled.Equipment.Validation force the mass flow rate through the system. However, at the start of the simulation, the shutoff valves are closed. This causes pressures in the range of 1E6 bar, which is not physical and exceeds the max attribute set in Modelica.Media.Interfaces.Types.AbsolutePressure. As a consequence, OCT-r23009_JM-r14295 which checks for this attribute when solving nonlinear equations returns an error.

The models need to be refactored to impose a pressure boundary condition rather than a mass flow boundary condition. Otherwise the model is not physically plausible.