.ClaRa.SubSystems.Furnace.ConvectiveSlice_L4.GasHeatTransfer_Top .ClaRa.SubSystems.Furnace.ConvectiveSlice_L4.GasHeatTransfer_TopHT from Gas to CT
model GasHeatTransfer_Top = ClaRa.Basics.ControlVolumes.Fundamentals.HeatTransport.Generic_HT.Adiabat_L2;