.ClaRa.Components.HeatExchangers.HEXvle_L3_2ph_BU.PressureLossShell .ClaRa.Components.HeatExchangers.HEXvle_L3_2ph_BU.PressureLossShellmodel PressureLossShell = ClaRa.Basics.ControlVolumes.Fundamentals.PressureLoss.Generic_PL.LinearParallelZones_L3;