modelWall
Information
This component models the thermal response of wall in interface with a rest ambiances where the thermal exchanges are mainly driven by natural convection, radiation and condensation.
The suffix '..._a' refers to side where the ports 'port_a' are.
This component is an assembly of the PartialWall module, the FreeConvection modules, the CarrollRadiation modules and the Condensation modules. The solid wall is dicretises in N along its depth to model the heat propagation. By defaut the value of N is computed from the depth and the thermal diffusivty of the wall. When the number of layers N is equal to one, the PartialWall is replaced by a HeatCapacitor.
Ports name port_surface are connected to boundary ports of the PartialWall. It can be usefull for specific applications when another modules is required et can be latter connected to this empty heat port.
The Wall supplies as output the surface area of the wall, via its A_wall ports, to the FviewCalculator module and get from this last the form (or view) factor as input via the F_view ports. The connection is performed explicitely via the graphic connectors.
Parameters
| Type | Name | Default | Description |
|---|---|---|---|
| Meshing properties | |||
| MeshGrid | mesh | MeshGrid.biotAndGeometricalGrowth | Selection of meshing function |
| Real | q | 1.2 | Growth rate (if geometricalGrowth chosen) |
| Modelica.SIunits.CoefficientOfHeatTransfer | h | 10 | Decoupled value of the heat transfer (if biot segment chosen) |
| Integer | N | integer(max(1, 5*Th/0.2*1e-6*d*cp/k)) | Number of layers : 1 to 65535 |
| Geometrical properties | |||
| Modelica.SIunits.Area | A | 0 | Wall area |
| Modelica.SIunits.Height | Lc | 0 | Wall characteristic length |
| Modelica.SIunits.Length | Th | 0 | Wall thickness |
| Dynamic properties | |||
| Dynamics | energyDynamics | Dynamics.SteadyStateInitial | Formulation of energy balance |
| Modelica.SIunits.Temperature | T_start | 293.15 | Start value for temperature, if energyDynamics = FixedInitial |
| Thermal properties | |||
| Modelica.SIunits.SpecificHeatCapacity | cp | 0 | Wall specific heat capacity |
| Modelica.SIunits.Density | d | 0 | Wall density |
| Modelica.SIunits.ThermalConductivity | k | 0 | Wall conductivity |
| Convection properties | |||
| Real | add_on_conv | 1 | Custom add-on for convection |
| Real | add_on_cond | 1 | Custom add-on for condensation |
| TAeZoSysPro.HeatTransfer.Types.FreeConvectionCorrelation | correlation_a | Correlations.vertical_plate_ASHRAE | free convection Correlation |
| TAeZoSysPro.HeatTransfer.Types.FreeConvectionCorrelation | correlation_b | if correlation_a == Correlations.ceiling_ASHRAE then Correlations.ground_ASHRAE elseif correlation_a == Correlations.ground_ASHRAE then Correlations.ceiling_ASHRAE else correlation_a | free convection Correlation |
| Modelica.SIunits.CoefficientOfHeatTransfer | h_cv_const_a | 0 | constant heat transfer coefficient (optional: if correlation 'Constant' choosen) |
| Modelica.SIunits.CoefficientOfHeatTransfer | h_cv_const_b | 0 | constant heat transfer coefficient (optional: if correlation 'Constant' choosen) |
| Radiative properties | |||
| Modelica.SIunits.Emissivity | eps_a | 0 | Wall emissivity |
| Modelica.SIunits.Emissivity | eps_b | 0 | Wall emissivity |
| Real | add_on_rad | 1 | Custom add-on |
Connectors
| Type | Name | Default | Description |
|---|---|---|---|
| Modelica.Thermal.HeatTransfer.Interfaces.HeatPort_a | port_a_rad | ||
| Modelica.Blocks.Interfaces.RealOutput | A_wall_a | ||
| Modelica.Blocks.Interfaces.RealInput | F_view_a | ||
| TAeZoSysPro.HeatTransfer.Interfaces.HeatPort_a | port_surface_a | ||
| Modelica.Thermal.HeatTransfer.Interfaces.HeatPort_b | port_b_rad | ||
| Modelica.Blocks.Interfaces.RealOutput | A_wall_b | ||
| Modelica.Blocks.Interfaces.RealInput | F_view_b | ||
| Modelica.Thermal.HeatTransfer.Interfaces.HeatPort_b | port_surface_b | ||
| TAeZoSysPro.FluidDynamics.Interfaces.FlowPort_a | port_a | ||
| TAeZoSysPro.FluidDynamics.Interfaces.FlowPort_b | port_b |
Components
| Type | Name | Default | Description |
|---|---|---|---|
| Modelica.SIunits.BiotNumber | Bi_a | ||
| Modelica.SIunits.BiotNumber | Bi_b | ||
| TAeZoSysPro.HeatTransfer.BasesClasses.PartialWall | partialWall | ||
| TAeZoSysPro.FluidDynamics.BasesClasses.FreeConvection | freeConvection_a | ||
| TAeZoSysPro.HeatTransfer.BasesClasses.CarrollRadiation | carrollRadiation_a | ||
| TAeZoSysPro.FluidDynamics.BasesClasses.FreeConvection | freeConvection_b | ||
| TAeZoSysPro.HeatTransfer.BasesClasses.CarrollRadiation | carrollRadiation_b | ||
| TAeZoSysPro.FluidDynamics.BasesClasses.Condensation | condensation_a | ||
| TAeZoSysPro.FluidDynamics.BasesClasses.Condensation | condensation_b | ||
| TAeZoSysPro.HeatTransfer.BasesClasses.HeatCapacitor | heatCapacitor |
Contents
| Name | Description |
|---|---|
 Medium |