.TransiEnt.Storage.Heat.PackedBedStorage_L4.Basics.PackedBedControlVolume_L4.HeatTransferPB2Wall .TransiEnt.Storage.Heat.PackedBedStorage_L4.Basics.PackedBedControlVolume_L4.HeatTransferPB2Wallmodel HeatTransferPB2Wall = TransiEnt.Storage.Heat.PackedBedStorage_L4.Basics.HeatTransfer.PackedBedToWall.PB2Wall_Ideal;