modelShade

Test model for exterior shade heat transfer
Diagram of ShadeOpen the diagram
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Extends from Modelica.Icons.Example (Icon for runnable examples).

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

TypeNameDefaultDescription
Modelica.Units.SI.AreaA1Window surface area
BooleanlinearizetrueSet to true to linearize emissive power

Components

TypeNameDefaultDescription
Buildings.HeatTransfer.Windows.BaseClasses.ShadeRadiationextShaRadRadiation model of exterior shade
Modelica.Blocks.Sources.RampuShaControl signal for shade
Modelica.Blocks.Sources.ConstantTOutOutside temperature
Buildings.HeatTransfer.Radiosity.OpaqueSurfaceradOutModel for outside radiosity
Buildings.HeatTransfer.Sources.PrescribedTemperatureTRadOutOutside radiative temperature
Buildings.HeatTransfer.Radiosity.OpaqueSurfaceradInModel for inside radiosity
Modelica.Blocks.Sources.ConstantTRooRoom temperature
Buildings.HeatTransfer.Sources.PrescribedTemperatureTRadRooRoom radiative temperature
Modelica.Blocks.Sources.ConstantQSol_shadeSolar heat flow absorbed by shade
Buildings.HeatTransfer.Radiosity.RadiositySplitterradShaIntRadiosity that strikes shading device
Buildings.HeatTransfer.Windows.BaseClasses.ShadeRadiationextNonShaRadRadiation model for fraction of window that has no shade
Buildings.HeatTransfer.Radiosity.RadiositySplitterradShaOutRadiosity that strikes shading device
Buildings.HeatTransfer.Sources.PrescribedTemperatureTAirOutOutside air temperature
Buildings.HeatTransfer.Sources.PrescribedTemperatureTAirRooRoom-side air temperature
Buildings.HeatTransfer.Windows.BaseClasses.ShadingSignalshaCon
Modelica.Blocks.Math.GainGConShaConvection coefficient for shade part of window
Modelica.Blocks.Math.GainGConUnsConvection coefficient for unshade part of window
Modelica.Blocks.Math.MultiSumsumJRooSum of room side radiosity
Modelica.Blocks.Math.MultiSumsumJOutSum of outdoor side radiosity
Buildings.HeatTransfer.Windows.BaseClasses.ShadeConvectionextShaConConvection model of exterior shade
Buildings.HeatTransfer.Windows.BaseClasses.ShadeConvectionextNonShaConConvection 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.