.ClaRa.Components.HeatExchangers.HEXvle2gas_L3_1ph_BU_simple.PressureLossShell .ClaRa.Components.HeatExchangers.HEXvle2gas_L3_1ph_BU_simple.PressureLossShellmodel PressureLossShell = ClaRa.Basics.ControlVolumes.Fundamentals.PressureLoss.Generic_PL.NoFriction_L2;