.ClaRa_Obsolete.SubSystems.ConvectiveHeatingPart_4SH.PressureLoss_SH1 .ClaRa_Obsolete.SubSystems.ConvectiveHeatingPart_4SH.PressureLoss_SH1model PressureLoss_SH1 = ClaRa.Basics.ControlVolumes.Fundamentals.PressureLoss.Generic_PL.LinearPressureLoss_L4;