modelInertMass
Information
This component models the thermal response of mass in interface with a rest ambiance where the thermal exchanges are mainly driven by natural convection and radiation.
This component is an assembly of the HeatCapacitor module, the FreeConvection module and a CarrollRadiation module.
To remain a generic as possible, a heatport port_surface directly connected to the mass has been added. For specific applications, The ForcedConvection module or another module for modelling radiation can be latter connected to this empty heat port when importing the InertMass
For the CarrollRadiation module, the InertMass module proposes two approaches for passing information about the form factor.
Explicit connection: UseImplicitConnection = false
The InertMass supplies as output the surface area of the wall, via its ports, to the FviewCalculator module and get from this last the Fview as input. The connection is performed explicitely via the graphic connector. The RadiativeIndex parameter is not evaluated. The explicit method is longer and is source of mistakes when manually selecting the index of the connection.Implicit connection: UseImplicitConnection = true
The implicit connection use the inner and outer key word to perform the passage of information. The ports Awall and Fview have to remains without connection. The FviewCalculator is declared as outer within the InertMass module. The equations corresponding to the 'connect' with graphic connection are done explicitely in the equation section. To connect severals walls to the FviewCalculator, a RadiativeIndex is added. The value of raditave index corresponds to the index of the current wall in the FviewCalculator. Therefore, each wall needs to have a different RadiativeIndex.Parameters
| Type | Name | Default | Description |
|---|---|---|---|
| Geometrical properties | |||
| Modelica.SIunits.Area | A_conv | 0 | Convective surface area |
| Modelica.SIunits.Area | A_rad | A_conv | Radiative surface area |
| Modelica.SIunits.Length | Lc | 1 | characteritic dimension for correlation |
| 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 | Specific heat capacity |
| Modelica.SIunits.Mass | m | 0 | Mass of the component |
| Convection properties | |||
| Real | add_on_conv | 1 | Custom add-on |
| TAeZoSysPro.HeatTransfer.Types.FreeConvectionCorrelation | correlation | Correlations.vertical_plate_ASHRAE | free convection Correlation |
| Modelica.SIunits.CoefficientOfHeatTransfer | h_cv_const | 0 | constant heat transfer coefficient (optional: if correlation 'Constant' choosen) |
| Radiative properties | |||
| Modelica.SIunits.Emissivity | eps | 0 | Wall emissivity |
| Real | add_on_rad | 1 | Custom add-on |
Connectors
| Type | Name | Default | Description |
|---|---|---|---|
| Modelica.Thermal.HeatTransfer.Interfaces.HeatPort_a | port_a_conv | ||
| Modelica.Thermal.HeatTransfer.Interfaces.HeatPort_a | port_a_rad | ||
| Modelica.Blocks.Interfaces.RealOutput | A_wall | ||
| Modelica.Blocks.Interfaces.RealInput | F_view | ||
| TAeZoSysPro.HeatTransfer.Interfaces.HeatPort_a | port_surface |
Components
| Type | Name | Default | Description |
|---|---|---|---|
| TAeZoSysPro.HeatTransfer.BasesClasses.FreeConvection | convection | ||
| TAeZoSysPro.HeatTransfer.BasesClasses.CarrollRadiation | carrollRadiation | ||
| TAeZoSysPro.HeatTransfer.BasesClasses.HeatCapacitor | heatCapacitor |
Contents
| Name | Description |
|---|---|
 Medium |