modelCorrectionGTaueDoublePane

Correction of the solar gain factor and the translucence factor according to VDI6007 Part 3
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Extends from AixLib.ThermalZones.ReducedOrder.SolarGain.BaseClasses.PartialCorrectionGTaue (Partial model for correction of the solar gain factor and for the translucence).

Information

CorrectionGTaueDoublePane computes transmission correction factors for the g-factor and the translucence. Transmission properties of transparent elements are in general dependent on the solar incidence angle. To take this dependency into account, correction factors can multiplied with the solar radiation. These factors should not be mistaken as calculation of solar radiation on tilted surfaces, calculation of g-value or consideration of sunblinds, it is an additional step. The implemented calculations are defined in the German Guideline VDI 6007 Part 3 (VDI, 2015). The given model is only valid for double pane windows. The guideline describes also calculations for single pane and triple pane windows.

References

VDI. German Association of Engineers Guideline VDI 6007-3 June 2015. Calculation of transient thermal response of rooms and buildings - modelling of solar radiation.

Parameters

TypeNameDefaultDescription
Integern (from PartialCorrectionGTaue)1Number of windows
Modelica.Units.SI.CoefficientOfHeatTransferUWin (from PartialCorrectionGTaue)Thermal transmission coefficient of whole window
Modelica.Units.SI.Anglexi (from PartialCorrectionGTaue)0Elevation angle
Modelica.Units.SI.Angletil (from PartialCorrectionGTaue)Surface tilt. til=90 degree for walls; til=0 for ceilings; til=180 for roof

Connectors

TypeNameDefaultDescription
Modelica.Blocks.Interfaces.RealOutputcorG_Dir (from PartialCorrectionGTaue)Transmission coefficient correction factor for direct radiation
Modelica.Blocks.Interfaces.RealOutputcorG_DifCle (from PartialCorrectionGTaue)Transmission coefficient correction factor for diffuse radiation while clear sky
Modelica.Blocks.Interfaces.RealOutputcorG_DifCov (from PartialCorrectionGTaue)Transmission coefficient correction factor for diffuse radiation while covered sky
Modelica.Blocks.Interfaces.RealOutputcorG_Gro (from PartialCorrectionGTaue)Transmission coefficient correction factor for ground reflection radiation
Modelica.Blocks.Interfaces.RealOutputcorTaue_Dir (from PartialCorrectionGTaue)Correction value for translucence for direct irradiation
Modelica.Blocks.Interfaces.RealOutputcorTaue_DifCle (from PartialCorrectionGTaue)Correction value for translucence for diffuse irradiation during clear sky
Modelica.Blocks.Interfaces.RealOutputcorTaue_DifCov (from PartialCorrectionGTaue)Correction value for translucence for diffuse irradiation during covered sky
Modelica.Blocks.Interfaces.RealOutputcorTaue_Gro (from PartialCorrectionGTaue)Correction value for translucence for ground reflection radiation
Modelica.Blocks.Interfaces.RealInput[n]incAng (from PartialCorrectionGTaue)Incidence angles of the sun beam on a tilted surface
Modelica.Blocks.Interfaces.BooleanInput[n]sunscreen (from PartialCorrectionGTaue)True: sunscreen closed, false: sunscreen open

Components

TypeNameDefaultDescription
Modelica.Units.SI.ReflectionCoefficientxn2_DirCalculation factor to simplify equations
Modelica.Units.SI.TransmissionCoefficienttau_2DirEnergetic degree of transmission for second pane
Realq21_DirCoefficient of heat transfer for exterior pane of double pane window
Realq22_DirCoefficient of heat transfer for interior pane of double pane window
RealqSek2_DirOverall coefficient of heat transfer for double pane window
Modelica.Units.SI.ReflectionCoefficientxn2_DifCleCalculation factor to simplify equations
Modelica.Units.SI.TransmissionCoefficienttau_2DifCleEnergetic degree of transmission for second pane
Realq21_DifCleCoefficient of heat transfer for exterior pane of double pane window
Realq22_DifCleCoefficient of heat transfer for interior pane of double pane window
RealqSek2_DifCleOverall coefficient of heat transfer for double pane window
Modelica.Units.SI.ReflectionCoefficientxn2_GroCalculation factor to simplify equations
Modelica.Units.SI.TransmissionCoefficienttau_2GroEnergetic degree of transmission for second pane
Realq21_GroCoefficient of heat transfer for exterior pane of double pane window
Realq22_GroCoefficient of heat transfer for interior pane of double pane window
RealqSek2_GroOverall coefficient of heat transfer for double pane window

Revisions

  • February 24, 2014 by Reza Tavakoli:

    Implemented.

  • September 12, 2015 by Moritz Lauster:

    Adapted to Annex 60 requirements.

  • May 25, 2016 by Stanley Risch:

    Added the correction of the translucence factor according to VDI6007 Part 3