modelThermalInsulation_dynamic_1way_1layer
Thermal Insulation - dynamic - one way - one layer
Extends from ClaRa.Basics.Icons.WallThick, TransiEnt.Components.Heat.ThermalInsulation.Basics.ThermalInsulation_base (Partial Model for thermal Insulation).
Information
Purpose of model
Model for thermal insulation to the environment if dynamic heat transfer, 1 heat flow path and 1 material layer is considered
Level of detail, physical effects considered, and physical insight
- L4 discretization in axial direction
- lateral dynamic heat transfer
- axial heat conduction inside thermal insulation
Limits of validity
- constant thickness in axial direction
- constant insulation surface in lateral direction
- constant temperature at start in axial direction, but can depend on lateral position
Interfaces
heat port
References
The model was tested in this test model:
TransiEnt.Components.Heat.ThermalInsulation.Check.TestThermalInsulation
It was created for the Research Projekt "Future Energy Solution"
Version History
Model created by Michael von der Heyde (heyde@tuhh.de) for the Research Project "Future Energy Solution" (FES), 2020
Parameters
| Type | Name | Default | Description |
|---|---|---|---|
| Fundamental Definitions | |||
| Integer | N_cv (from ThermalInsulation_base) | 10 | Number of axial control volumes |
| Geometry | |||
| Integer | N_iso (from ThermalInsulation_base) | 3 | Number of lateral insulation discretisation for each layer |
| SI.Length | length (from ThermalInsulation_base) | 1 | Length of Insulation |
| SI.Length | circumference (from ThermalInsulation_base) | 1 | Circumference of Insulation |
| SI.Length | thickness | 1 | Thickness of Insulation |
| Heat Transfer | |||
| SI.CoefficientOfHeatTransfer | alpha_iso2ambient | 20 | Insulation Surface to Air Heat Transfer Coefficient |
| Boolean | useAxialHeatConduction | false | True, if axial heat conduction through a wall shall be considered |
| Initialization | |||
| SI.Temperature | T_start | ones(N_iso)*simCenter.T_amb_start | Initial Temperature |
Connectors
| Type | Name | Default | Description |
|---|---|---|---|
| ClaRa.Basics.Interfaces.HeatPort_a | heat (from ThermalInsulation_base) |
Components
| Type | Name | Default | Description |
|---|---|---|---|
| ClaRa.SimCenter | simCenter (from ThermalInsulation_base) | ||
| Modelica.Thermal.HeatTransfer.Sources.PrescribedTemperature | environment | ||
| Modelica.Blocks.Sources.RealExpression | realExpression | ||
| ClaRa.Components.Adapters.Scalar2VectorHeatPort | scalar2VectorHeatPort | ||
| Basics.Convection_L4 | convection | ||
| ClaRa.Basics.ControlVolumes.SolidVolumes.ThinPlateWall_L4 | insulationLayer | ||
| Summary | summary | ||
| SI.Temperature | T_outer | simCenter.T_amb |
Contents
| Name | Description |
|---|---|
 medium |