.TransiEnt.Storage.Heat.PackedBedStorage_L4.PackedBedStorage_L4.HotAirGeometry .TransiEnt.Storage.Heat.PackedBedStorage_L4.PackedBedStorage_L4.HotAirGeometryGeometry of enclosed air space on hot side of storage unit
model HotAirGeometry = TransiEnt.Storage.Heat.PackedBedStorage_L4.Basics.StorageAirVolumeGeometry.BlockShapedUnit;