modelStorageCover
Sandwich wall construction for heat storage cover
Information
Overview
Model of a sandwich wall construction as cover of a hot water tank (thermal storage).
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 |
|---|---|---|---|
| Dynamics › Equations | |||
| Modelica.Fluid.Types.Dynamics | energyDynamics | Modelica.Fluid.Types.Dynamics.DynamicFreeInitial | Type of energy balance: dynamic (3 initialization options) or steady state |
| Geometrical Parameters | |||
| Modelica.Units.SI.Diameter | D1 | 1 | Inner tank diameter |
| Modelica.Units.SI.Thickness | sWall | 0.1 | Thickness of wall |
| Modelica.Units.SI.Thickness | sIns | 0.1 | Thickness of insulation |
| Modelica.Units.SI.Area | AWall | D1^2/4*Modelica.Constants.pi | Area |
| Thermal properties | |||
| Modelica.Units.SI.ThermalConductivity | lambdaWall | 50 | Thermal Conductivity of wall |
| Modelica.Units.SI.ThermalConductivity | lambdaIns | 0.045 | Thermal Conductivity of insulation |
| Modelica.Units.SI.CoefficientOfHeatTransfer | hConIn | 2 | Convective heat transfer coefficient water <-> wall |
| Modelica.Units.SI.CoefficientOfHeatTransfer | hConOut | 2 | Convective heat transfer coefficient insulation <-> air |
| Initialization | |||
| Modelica.Units.SI.Temperature | TStartWall | 293.15 | Starting Temperature of wall in K |
| Modelica.Units.SI.Temperature | TStartIns | 293.15 | Starting Temperature of insulation in K |
| Material properties | |||
| Modelica.Units.SI.Density | rhoIns | 1600 | Density of insulation |
| Modelica.Units.SI.SpecificHeatCapacity | cIns | 1000 | Specific heat capacity of insulation |
| Modelica.Units.SI.Density | rhoWall | 1600 | Density of Insulation |
| Modelica.Units.SI.SpecificHeatCapacity | cWall | 1000 | Specific heat capacity of wall |
Connectors
| Type | Name | Default | Description |
|---|---|---|---|
| Modelica.Thermal.HeatTransfer.Interfaces.HeatPort_a | heatportInner | Inner heat port | |
| Modelica.Thermal.HeatTransfer.Interfaces.HeatPort_a | heatportOuter | Outer heat port |
Components
| Type | Name | Default | Description |
|---|---|---|---|
| AixLib.Utilities.HeatTransfer.HeatConv | convInside | Inside heat convection | |
| Modelica.Thermal.HeatTransfer.Components.ThermalConductor | condWall1 | Heat conduction through first wall layer | |
| Modelica.Thermal.HeatTransfer.Components.HeatCapacitor | loadWall | Heat capacity of wall | |
| Modelica.Thermal.HeatTransfer.Components.ThermalConductor | condWall2 | Heat conduction through second wall layer | |
| Modelica.Thermal.HeatTransfer.Components.ThermalConductor | condIns1 | Heat conduction through first insulation layer | |
| Modelica.Thermal.HeatTransfer.Components.HeatCapacitor | loadIns | Heat capacity of insulation | |
| Modelica.Thermal.HeatTransfer.Components.ThermalConductor | condIns2 | Heat conduction through second insulation layer | |
| AixLib.Utilities.HeatTransfer.HeatConv | convOutside | 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