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
1. Purpose of model
Model for thermal insulation to the environment if dynamic heat transfer, 1 heat flow path and 1 material layer is considered
2. Level of detail, physical effects considered, and physical insight
- L4 discretization in axial direction
- lateral dynamic heat transfer
- axial heat conduction inside thermal insulation
3. 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
4. Interfaces
(none)
5. Nomenclature
(no elements)
6. Governing Equations
(no equations)
7. Remarks for Usage
(none)
8. Validation
(no validation or testing necessary)
9. References
(none)
10. 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 |