modelDoubleShading

Two shading components in series
Diagram of DoubleShadingOpen the diagram
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Extends from PartialShading (Window shading partial).

Information

This model can be extended or used if two shading models need to be combined.

Parameters

TypeNameDefaultDescription
Booleancontrolled (from PartialShading)trueif true, shading has a control input
Modelica.Units.SI.AreaA_glazing (from PartialShading)Surface area of the glazing
Modelica.Units.SI.AreaA_frame (from PartialShading)Surface area of the frame
Modelica.Units.SI.Angleinc (from PartialShading)Surface inclination
Modelica.Units.SI.TemperatureTenv_nom (from PartialShading)280Nominal temperature of environment
Modelica.Units.SI.EmissivityepsSw_frame (from PartialShading)Short wave solar absorption coefficient of the frame
Modelica.Units.SI.EmissivityepsLw_frame (from PartialShading)Long wave solar absorption coefficient of the frame
Modelica.Units.SI.EmissivityepsLw_glazing (from PartialShading)Long wave solar absorption coefficient of the glazing
Modelica.Units.SI.EmissivityepsSw_shading (from PartialShading)0.8Short wave emissivity of the shading object
Realg_glazing (from PartialShading)Nominal shading coefficient of the glazing
BooleanlinCon (from PartialShading)falseLinearise convective heat transfer
BooleanlinRad (from PartialShading)falseLinearise radiative heat transfer
BooleanhaveBoundaryPorts (from PartialShading)trueInclude ports for setting boundary conditions
BooleanhaveFrame (from PartialShading)A_frame*epsLw_frame > 0Frame enabled
Modelica.Units.SI.CoefficientOfHeatTransferhSha (from PartialShading)12Equivalent thermal conductance of the shading device
Window properties
Modelica.Units.SI.Angleazi (from PartialShading)Window azimuth angle

Connectors

TypeNameDefaultDescription
Modelica.Blocks.Interfaces.RealInputHDirTil (from PartialShading)Direct solar illuminance on surface
Modelica.Blocks.Interfaces.RealInputHSkyDifTil (from PartialShading)Diffuse sky solar illuminance on tilted surface
Modelica.Blocks.Interfaces.RealInputHGroDifTil (from PartialShading)Diffuse ground solar illuminance on tilted surface
Modelica.Blocks.Interfaces.RealInputangZen (from PartialShading)Angle of incidence
Modelica.Blocks.Interfaces.RealOutputHShaDirTil (from PartialShading)Shaded direct solar illuminance on surface
Modelica.Blocks.Interfaces.RealOutputHShaSkyDifTil (from PartialShading)Shaded diffuse sky solar illuminance on tilted surface
Modelica.Blocks.Interfaces.RealOutputHShaGroDifTil (from PartialShading)Shaded diffuse ground solar illuminance on tilted surface
Modelica.Blocks.Interfaces.RealOutputiAngInc (from PartialShading)Angle of incidence after transmittance through (possible) shading
Modelica.Blocks.Interfaces.RealInputangInc (from PartialShading)Inclination angle
Modelica.Blocks.Interfaces.RealInputangAzi (from PartialShading)Azimuth angle
Modelica.Blocks.Interfaces.RealInputCtrl (from PartialShading)Control signal between 0 and 1, i.e. 1 is fully closed
Modelica.Thermal.HeatTransfer.Interfaces.HeatPort_bport_frame (from PartialShading)
Modelica.Thermal.HeatTransfer.Interfaces.HeatPort_aport_glazing (from PartialShading)
Modelica.Blocks.Interfaces.RealInputTEnv (from PartialShading)Environment temperature
Modelica.Blocks.Interfaces.RealInputTe (from PartialShading)
Modelica.Blocks.Interfaces.RealInputhForcedConExt (from PartialShading)
Modelica.Blocks.Interfaces.RealOutputTDryBul (from PartialShading)Exterior surface air temperature
Modelica.Blocks.Interfaces.RealInputm_flow (from PartialShading)

Components

TypeNameDefaultDescription
Modelica.Units.SI.IrradianceHSha (from PartialShading)HShaDirTil + HShaSkyDifTil + HShaGroDifTilTotal shaded solar irradiance
Modelica.Units.SI.IrradianceH (from PartialShading)HDirTil + HSkyDifTil + HGroDifTilTotal unshaded solar irradiance
PartialShadingstateShading1
PartialShadingstateShading2

Revisions

  • October 12, 2022, by Filip Jorissen:
    Revised default connections between shading components when using DoubleShading. See #1299.
  • August 9, 2022, by Filip Jorissen:
    Updated example after modified component connectors for issue #1270.
  • July 18, 2016 by Filip Jorissen:
    Cleaned up implementation and documentation.
  • December 2014, by Filip Jorissen:
    First implementation.