modelStorageWall
Sandwich wall construction for heat storages
Extends from AixLib.Obsolete.BaseClasses.ObsoleteModel (Icon for classes that are obsolete and will be removed in later versions), AixLib.Fluid.Storage.BaseClasses.StorageCover (Sandwich wall construction for heat storage cover).
Information
Overview
Model of a sandwich wall construction for a wall for heat storages.
Concept
The heat transfer is implemented consisting of the insulation material and the tank material. Only the material data is used for the calculation of losses. No additional losses are included.
Parameters
| Type | Name | Default | Description |
|---|---|---|---|
| Modelica.Units.SI.Area | AIns | (D1 + 2*sWall)*Modelica.Constants.pi*height | |
| Modelica.Units.SI.Area | AOutside | (D1 + 2*(sWall + sIns))*Modelica.Constants.pi*height | |
| Dynamics › Equations | |||
| Modelica.Fluid.Types.Dynamics | energyDynamics (from StorageCover) | Modelica.Fluid.Types.Dynamics.DynamicFreeInitial | Type of energy balance: dynamic (3 initialization options) or steady state |
| Geometrical Parameters | |||
| Modelica.Units.SI.Diameter | D1 (from StorageCover) | 1 | Inner tank diameter |
| Modelica.Units.SI.Thickness | sWall (from StorageCover) | 0.1 | Thickness of wall |
| Modelica.Units.SI.Thickness | sIns (from StorageCover) | 0.1 | Thickness of insulation |
| Modelica.Units.SI.Area | AWall (from StorageCover) | D1^2/4*Modelica.Constants.pi | Area |
| Modelica.Units.SI.Length | height | 0.15 | Height of layer |
| Thermal properties | |||
| Modelica.Units.SI.ThermalConductivity | lambdaWall (from StorageCover) | 50 | Thermal Conductivity of wall |
| Modelica.Units.SI.ThermalConductivity | lambdaIns (from StorageCover) | 0.045 | Thermal Conductivity of insulation |
| Modelica.Units.SI.CoefficientOfHeatTransfer | hConIn (from StorageCover) | 2 | Convective heat transfer coefficient water <-> wall |
| Modelica.Units.SI.CoefficientOfHeatTransfer | hConOut (from StorageCover) | 2 | Convective heat transfer coefficient insulation <-> air |
| Initialization | |||
| Modelica.Units.SI.Temperature | TStartWall (from StorageCover) | 293.15 | Starting Temperature of wall in K |
| Modelica.Units.SI.Temperature | TStartIns (from StorageCover) | 293.15 | Starting Temperature of insulation in K |
| Material properties | |||
| Modelica.Units.SI.Density | rhoIns (from StorageCover) | 1600 | Density of insulation |
| Modelica.Units.SI.SpecificHeatCapacity | cIns (from StorageCover) | 1000 | Specific heat capacity of insulation |
| Modelica.Units.SI.Density | rhoWall (from StorageCover) | 1600 | Density of Insulation |
| Modelica.Units.SI.SpecificHeatCapacity | cWall (from StorageCover) | 1000 | Specific heat capacity of wall |
Connectors
| Type | Name | Default | Description |
|---|---|---|---|
| Modelica.Thermal.HeatTransfer.Interfaces.HeatPort_a | heatportInner (from StorageCover) | Inner heat port | |
| Modelica.Thermal.HeatTransfer.Interfaces.HeatPort_a | heatportOuter (from StorageCover) | Outer heat port |
Components
| Type | Name | Default | Description |
|---|---|---|---|
| AixLib.Utilities.HeatTransfer.HeatConv | convInside (from StorageCover) | Inside heat convection | |
| Modelica.Thermal.HeatTransfer.Components.ThermalConductor | condWall1 (from StorageCover) | Heat conduction through first wall layer | |
| Modelica.Thermal.HeatTransfer.Components.HeatCapacitor | loadWall (from StorageCover) | Heat capacity of wall | |
| Modelica.Thermal.HeatTransfer.Components.ThermalConductor | condWall2 (from StorageCover) | Heat conduction through second wall layer | |
| Modelica.Thermal.HeatTransfer.Components.ThermalConductor | condIns1 (from StorageCover) | Heat conduction through first insulation layer | |
| Modelica.Thermal.HeatTransfer.Components.HeatCapacitor | loadIns (from StorageCover) | Heat capacity of insulation | |
| Modelica.Thermal.HeatTransfer.Components.ThermalConductor | condIns2 (from StorageCover) | Heat conduction through second insulation layer | |
| AixLib.Utilities.HeatTransfer.HeatConv | convOutside (from StorageCover) | Outside heat convection |
Revisions
-
October 12, 2016 by Marcus Fuchs:
Add comments and fix documentation -
October 11, 2016 by Sebastian Stinner:
Added to AixLib -
March 25, 2015 by Ana Constantin:
Uses components from MSL -
October 2, 2013 by Ole Odendahl:
Added documentation and formatted appropriately