modelNaturalConvection
Heat Transfer with natural convection of the outside air
Extends from ThermalSeparation.Wall.BaseWall (Model of the heat loss at the column outer wall).
Information
This model calculates the heat loss to ambiance using a correlation for the outside heat transfer coefficient of air obtained from VDI Wärmeatlas, 6.Auflage, 1991, S. Fa2. For further information of this model see also BaseWallParameters
| Type | Name | Default | Description |
|---|---|---|---|
| Integer | n (from BaseWall) | ||
| Boolean | stat (from BaseWall) | false | true if wall is calculated stationary |
| SI.Temperature | T_start (from BaseWall) | initial temperature of the wall | |
| SI.SurfaceCoefficientOfHeatTransfer | alpha_inner (from BaseWall) | 200 | heat transfer coefficient at inner side of the wall |
| SI.Pressure | p_amb | 1e5 | ambient pressure |
Components
| Type | Name | Default | Description |
|---|---|---|---|
| SI.Temperature | T_amb (from BaseWall) | ||
| Geometry | geometry (from BaseWall) | Geometry Record of the corresponding section | |
| SI.Temperature[n] | T_wall (from BaseWall) | wall temperature | |
| SI.Temperature[n] | T (from BaseWall) | ||
| SI.HeatFlowRate[n] | Qdot (from BaseWall) | heat flow from inner side of the wall to the wall | |
| SI.HeatFlowRate[n] | Qdot_out (from BaseWall) | heat flow from the wall to the outer side of the wall | |
| SI.SurfaceCoefficientOfHeatTransfer[n] | alpha | Surface Coefficient of Heat Transfer at outer Wall of the column |
Contents
| Name | Description |
|---|---|
 Mediumprotected | Simple Air to calculate the dimensionless numbers at ambient Temperature and Pressure |