modelConvNLayerClearanceStar
Information
Overview
The ConvNLayerClearanceStar model represents a wall, consisting of n different layers with natural convection on one side and (window) clearance.
Concept
There is one inner and one outer HeatPort-connector to simulate one-dimensional heat transfer through the wall and heat storage within the wall.
The ConvNLayerClearanceStar model extends the basic concept by adding the functionality of approximated longwave radiation exchange. Simply connect all radiation exchanging surfaces via their RadPort-connectors.
Attention: The first
element in each vector represents the layer connected to
HeatPort_a, the last element represents the layer
connected to HeatPort_b.
HeatPort_b1 is the connection for
absSolarRadWin the transmitted radiation through a
window, that is absorbed by a wall.
Example Results
This model is part of Wall therefore also part of the corresponding examples InsideWall and OutsideWall.
-
July 1, 2020 by Konstantina Xanthopoulou:
#898:Added HeatPort to connect absSolarRadWin in Wall. -
April 23, 2020 by Philipp Mehrfeld:
#752: Mainly add wallType, propagate energyDynamics, change icon. -
October 12, 2016 by Tobias Blacha:
Algorithm for HeatConv_inside is now selectable via parameters -
Mai 19, 2014 by Ana Constantin:
Uses components from MSL and respects the naming conventions -
May 02, 2013 by Ole Odendahl:
Formatted documentation appropriately -
Aug. 08, 2006 by Peter Matthes:
Fixed wrong connection with heatConv-Module and added connection graphics. -
June 19, 2006 by Timo Haase:
Implemented.
Parameters
| Type | Name | Default | Description |
|---|---|---|---|
| AixLib.DataBase.Walls.WallBaseDataDefinition | wallType | ||
| AixLib.ThermalZones.HighOrder.Components.Types.InsideSurfaceOrientation | surfaceOrientation | Surface orientation | |
| Dynamics › Equations | |||
| Modelica.Fluid.Types.Dynamics | energyDynamics | Modelica.Fluid.Types.Dynamics.DynamicFreeInitial | Type of energy balance: dynamic (3 initialization options) or steady state |
| Geometry | |||
| Modelica.Units.SI.Height | h | Height | |
| Modelica.Units.SI.Length | l | Length | |
| Modelica.Units.SI.Area | clearance | 0 | Area of clearance |
| Structure of wall layers | |||
| Integer | n | wallType.n | Number of layers |
| Modelica.Units.SI.Thickness[n] | d | wallType.d | Thickness |
| Modelica.Units.SI.Density[n] | rho | wallType.rho | Density |
| Modelica.Units.SI.ThermalConductivity[n] | lambda | wallType.lambda | Thermal conductivity |
| Modelica.Units.SI.SpecificHeatCapacity[n] | c | wallType.c | Specific heat capacity |
| Convection | |||
| AixLib.ThermalZones.HighOrder.Components.Types.CalcMethodConvectiveHeatTransferInsideSurface | calcMethod | AixLib.ThermalZones.HighOrder.Components.Types.CalcMethodConvectiveHeatTransferInsideSurface.Bernd_Glueck | Calculation method for convective heat transfer coefficient at inside surface |
| Modelica.Units.SI.CoefficientOfHeatTransfer | hCon_const | 2 | Constant convective heat transfer coefficient |
| Radiation | |||
| AixLib.ThermalZones.HighOrder.Components.Types.CalcMethodRadiativeHeatTransfer | radCalcMethod | AixLib.ThermalZones.HighOrder.Components.Types.CalcMethodRadiativeHeatTransfer.No_approx | Calculation method for radiation heat transfer |
| Modelica.Units.SI.Temperature | T_ref | Modelica.Units.Conversions.from_degC(16) | Reference temperature for optional linearization |
| Thermal | |||
| Modelica.Units.SI.Temperature | T0 | Modelica.Units.Conversions.from_degC(16) | Initial temperature |
Connectors
| Type | Name | Default | Description |
|---|---|---|---|
| AixLib.Utilities.Interfaces.RadPort | radPort | ||
| Modelica.Thermal.HeatTransfer.Interfaces.HeatPort_a | port_a | ||
| Modelica.Thermal.HeatTransfer.Interfaces.HeatPort_b | port_b | ||
| Modelica.Thermal.HeatTransfer.Interfaces.HeatPort_b | port_b1 |
Components
| Type | Name | Default | Description |
|---|---|---|---|
| AixLib.Utilities.HeatTransfer.HeatConvInside | heatConv | ||
| AixLib.Utilities.HeatTransfer.HeatToRad | twoStar_RadEx | ||
| AixLib.ThermalZones.HighOrder.Components.Walls.BaseClasses.SimpleNLayer | simpleNLayer |