modelShade
Test model for exterior shade heat transfer
Extends from Modelica.Icons.Example.
Information
This model tests the shading device. Note that the temperature of the shading device changes slightly as the shade control signal changes (i.e., as the shade is lowered). This is because the shade has a different emissive power than the glass, which changes the energy balance.Parameters
| Type | Name | Default | Description |
|---|---|---|---|
| Modelica.Units.SI.Area | A | 1 | Window surface area |
| Boolean | linearize | true | Set to true to linearize emissive power |
Components
| Type | Name | Default | Description |
|---|---|---|---|
| Buildings.HeatTransfer.Windows.BaseClasses.ShadeRadiation | extShaRad | Radiation model of exterior shade | |
| Modelica.Blocks.Sources.Ramp | uSha | Control signal for shade | |
| Modelica.Blocks.Sources.Constant | TOut | Outside temperature | |
| Buildings.HeatTransfer.Radiosity.OpaqueSurface | radOut | Model for outside radiosity | |
| Buildings.HeatTransfer.Sources.PrescribedTemperature | TRadOut | Outside radiative temperature | |
| Buildings.HeatTransfer.Radiosity.OpaqueSurface | radIn | Model for inside radiosity | |
| Modelica.Blocks.Sources.Constant | TRoo | Room temperature | |
| Buildings.HeatTransfer.Sources.PrescribedTemperature | TRadRoo | Room radiative temperature | |
| Modelica.Blocks.Sources.Constant | QSol_shade | Solar heat flow absorbed by shade | |
| Buildings.HeatTransfer.Radiosity.RadiositySplitter | radShaInt | Radiosity that strikes shading device | |
| Buildings.HeatTransfer.Windows.BaseClasses.ShadeRadiation | extNonShaRad | Radiation model for fraction of window that has no shade | |
| Buildings.HeatTransfer.Radiosity.RadiositySplitter | radShaOut | Radiosity that strikes shading device | |
| Buildings.HeatTransfer.Sources.PrescribedTemperature | TAirOut | Outside air temperature | |
| Buildings.HeatTransfer.Sources.PrescribedTemperature | TAirRoo | Room-side air temperature | |
| Buildings.HeatTransfer.Windows.BaseClasses.ShadingSignal | shaCon | ||
| Modelica.Blocks.Math.Gain | GConSha | Convection coefficient for shade part of window | |
| Modelica.Blocks.Math.Gain | GConUns | Convection coefficient for unshade part of window | |
| Modelica.Blocks.Math.MultiSum | sumJRoo | Sum of room side radiosity | |
| Modelica.Blocks.Math.MultiSum | sumJOut | Sum of outdoor side radiosity | |
| Buildings.HeatTransfer.Windows.BaseClasses.ShadeConvection | extShaCon | Convection model of exterior shade | |
| Buildings.HeatTransfer.Windows.BaseClasses.ShadeConvection | extNonShaCon | Convection model for fraction of window that has no shade |
Revisions
-
June 27, 2013, by Michael Wetter:
Changed model because the outflowing radiosity has been changed to be a non-negative quantity. See track issue #158.