.ClaRa_Obsolete.SubSystems.ConvectiveHeatingPart_4SH.PressureLoss_SH4 .ClaRa_Obsolete.SubSystems.ConvectiveHeatingPart_4SH.PressureLoss_SH4model PressureLoss_SH4 = ClaRa.Basics.ControlVolumes.Fundamentals.PressureLoss.Generic_PL.LinearPressureLoss_L4;