.TransiEnt.Components.Heat.HeatRecoverySteamGenerator.HeatRecoverySteamGenerator_L1.HeatTransferExternal .TransiEnt.Components.Heat.HeatRecoverySteamGenerator.HeatRecoverySteamGenerator_L1.HeatTransferExternalmodel HeatTransferExternal = ClaRa.Basics.ControlVolumes.Fundamentals.HeatTransport.Generic_HT.Constant_L4;