modelWindowEN673
Extends from Modelica.Icons.Example (Icon for runnable examples).
Information
This model modifies the default implementation of the window to be more in line with EN673.
E.g. the exterior and interior total convective heat transfer coefficients are changed.
The resulting U-value is computed as U_EN673 and can be compared to
the default implementation U_default.
The interior air cavity heat transfer coefficient computations are unchanged,
which explains the different results with the standard.
This model can be used to verify that U_EN673 is sufficiently close to the
expect U value of the glazing system. When this is not the case, you likely made an implementation
error with the coating (= long wave emissivity) implementation.
Furthermore, this model can be used to check what the wind speed and
temperature-dependent U-value is.
Parameters
| Type | Name | Default | Description |
|---|---|---|---|
| Modelica.Units.SI.Temperature | TZone | 273.15 + 20 | Fixed interior temperature |
| Modelica.Units.SI.Temperature | TOut | 273.15 | Fixed exterior temperature |
Components
| Type | Name | Default | Description |
|---|---|---|---|
| SimInfoManagerFixedBC | sim | SimInfoManager with fixed temperatures | |
| Modelica.Units.SI.CoefficientOfHeatTransfer | U_EN673 | windowEN673.layMul.port_a.Q_flow/(TZone - TOut)/windowEN673.A | |
| Modelica.Units.SI.CoefficientOfHeatTransfer | U_default | window.layMul.port_a.Q_flow/(TZone - TOut)/window.A | |
| IDEAS.Buildings.Components.Window | windowEN673 | Window model with modifications to be better in line with EN673 | |
| IDEAS.Buildings.Components.Zone | zone | ||
| IDEAS.Buildings.Components.BoundaryWall | boundaryWall | Large wall for setting radiative temperature | |
| IDEAS.Buildings.Components.BoundaryWall | boundaryWall1 | Large wall for setting radiative temperature | |
| IDEAS.Buildings.Components.BoundaryWall | boundaryWall2 | Large wall for setting radiative temperature | |
| IDEAS.Buildings.Components.BoundaryWall | boundaryWall3 | Large wall for setting radiative temperature | |
| Modelica.Thermal.HeatTransfer.Sources.FixedTemperature | TFix | Fixed air temperature | |
| IDEAS.Buildings.Components.Window | window | Window without modifications |
Contents
| Name | Description |
|---|---|
 Medium | Air medium |
 SimInfoManagerFixedBCprotected |
Revisions
-
February 4, 2025, by Jelger Jansen:
AddedModelica.Units.to one or multiple parameter(s) due to the removal ofimportin IDEAS/package.mo. See #1415 . -
November 6, 2023, by Filip Jorissen:
Set frame fraction to zero in normal window. -
July 20, 2020, by Filip Jorissen:
Updated glazing type. -
September 22, 2019, by Filip Jorissen:
First implementation.