Buildings.HeatTransfer.Windows.Examples

Information

This package contains examples for the use of models that can be found in Buildings.HeatTransfer.Windows.

Extends from Modelica.Icons.ExamplesPackage (Icon for packages containing runnable examples).

Package Content

Name	Description
Window	Test model for the window
BoundaryHeatTransfer	Test model for the heat transfer at the window boundary condition

Buildings.HeatTransfer.Windows.Examples.Window

Information

Parameters

Type	Name	Default	Description
Area	A	1	Window surface area [m2]
Real	fFra	0.2	Fraction of frame, = frame area divided by total area
Boolean	linearize	false	Set to true to linearize emissive power
Angle	lat	0.34906585039887	Latitude [rad]
Angle	azi	0	Surface azimuth [rad]
Angle	til	1.5707963267949	Surface tilt [rad]

Connectors

Type	Name	Description
Bus	weaBus

Modelica definition

model Window "Test model for the window"
  import Buildings;
  extends Modelica.Icons.Example;
  parameter Modelica.SIunits.Area A=1 "Window surface area";
  parameter Real fFra=0.2 
    "Fraction of frame, = frame area divided by total area";
  parameter Boolean linearize = false "Set to true to linearize emissive power";
  parameter Modelica.SIunits.Angle lat=0.34906585039887 "Latitude";
  parameter Modelica.SIunits.Angle azi=0 "Surface azimuth";
  parameter Modelica.SIunits.Angle til=1.5707963267949 "Surface tilt";
  Buildings.HeatTransfer.Windows.Window window(
    A=A,
    fFra=fFra,
    glaSys=glaSys,
    linearize=linearize,
    til=til) "Window";
  Buildings.HeatTransfer.Windows.InteriorHeatTransfer intCon(A=A, fFra=fFra,
    linearizeRadiation=linearize,
    absIRSha_air=glaSys.shade.absIR_a,
    absIRSha_glass=glaSys.shade.absIR_b,
    tauIRSha_air=glaSys.shade.tauIR_a,
    tauIRSha_glass=glaSys.shade.tauIR_b,
    haveExteriorShade=glaSys.haveExteriorShade,
    haveInteriorShade=glaSys.haveInteriorShade) 
    "Room-side convective heat transfer";
  Buildings.HeatTransfer.Windows.ExteriorHeatTransfer extCon(A=A, fFra=fFra,
    linearizeRadiation=linearize,
    absIRSha_air=glaSys.shade.absIR_a,
    absIRSha_glass=glaSys.shade.absIR_b,
    tauIRSha_air=glaSys.shade.tauIR_a,
    tauIRSha_glass=glaSys.shade.tauIR_b,
    haveExteriorShade=glaSys.haveExteriorShade,
    haveInteriorShade=glaSys.haveInteriorShade,
    F_sky=0.5) "Exterior convective heat transfer";
  Modelica.Blocks.Sources.Constant TRooAir(k=293.15, y(unit="K")) 
    "Room air temperature";
  Modelica.Blocks.Sources.Ramp uSha(duration=0.5, startTime=0.25) 
    "Shading control signal";
  Buildings.HeatTransfer.Sources.PrescribedTemperature TOuts 
    "Outside air temperature";
  Buildings.HeatTransfer.Sources.PrescribedTemperature TRAir 
    "Room air temperature";
  Modelica.Blocks.Sources.Constant fClr(k=0) "Fraction of sky that is clear";
  Buildings.HeatTransfer.Radiosity.IndoorRadiosity indRad(A=A) 
    "Model for indoor radiosity";
  Buildings.HeatTransfer.Sources.FixedHeatFlow fixedHeatFlow(Q_flow=0);
  Buildings.HeatTransfer.Data.GlazingSystems.DoubleClearAir13Clear glaSys(
    shade=Buildings.HeatTransfer.Data.Shades.Gray(),
    haveExteriorShade=false,
    haveInteriorShade=true);
  Buildings.BoundaryConditions.SolarIrradiation.DirectTiltedSurface HDirTil(
    til=til,
    lat=lat,
    azi=azi);
  Buildings.BoundaryConditions.SolarIrradiation.DiffuseIsotropic HDifTilIso(
               til=til);
  Buildings.BoundaryConditions.WeatherData.ReaderTMY3 weaDat(
                                                        filNam=
        "Resources/weatherdata/USA_IL_Chicago-OHare.Intl.AP.725300_TMY3.mos");
  Modelica.Blocks.Math.Gain HRoo(k=0.1) "Solar irradiation from room";
  Buildings.HeatTransfer.Windows.BaseClasses.WindowRadiation winRad(
    AWin=1,
    N=glaSys.nLay,
    tauGlaSol=glaSys.glass.tauSol,
    rhoGlaSol_a=glaSys.glass.rhoSol_a,
    rhoGlaSol_b=glaSys.glass.rhoSol_b,
    tauShaSol_a=glaSys.shade.tauSol_a,
    tauShaSol_b=glaSys.shade.tauSol_b,
    rhoShaSol_a=glaSys.shade.rhoSol_a,
    rhoShaSol_b=glaSys.shade.rhoSol_b,
    haveExteriorShade=glaSys.haveExteriorShade,
    haveInteriorShade=glaSys.haveInteriorShade);
  Buildings.BoundaryConditions.WeatherData.Bus weaBus;
equation 
  connect(uSha.y, extCon.uSha);
  connect(uSha.y, window.uSha);
  connect(uSha.y, intCon.uSha);
  connect(TOuts.port, extCon.air);
  connect(TRAir.port, intCon.air);
  connect(TRooAir.y, TRAir.T);
  connect(window.glaUns_b, intCon.glaUns);
  connect(window.glaSha_b, intCon.glaSha);
  connect(window.glaUns_a, extCon.glaUns);
  connect(window.glaSha_a, extCon.glaSha);
  connect(window.fra_a, extCon.frame);
  connect(window.fra_b, intCon.frame);
  connect(extCon.JOutUns, window.JInUns_a);
  connect(extCon.JInUns, window.JOutUns_a);
  connect(extCon.JOutSha, window.JInSha_a);
  connect(extCon.JInSha, window.JOutSha_a);
  connect(window.JOutUns_b, intCon.JInUns);
  connect(intCon.JOutUns, window.JInUns_b);
  connect(window.JOutSha_b, intCon.JInSha);
  connect(intCon.JOutSha, window.JInSha_b);
  connect(fClr.y, extCon.f_clr);
  connect(indRad.JOut, intCon.JInRoo);
  connect(intCon.JOutRoo, indRad.JIn);
  connect(fixedHeatFlow.port, indRad.heatPort);
  connect(winRad.QTra_flow,HRoo. u);
  connect(HRoo.y,winRad. HRoo);
  connect(HDifTilIso.H, winRad.HDif);
  connect(HDirTil.H, winRad.HDir);
  connect(HDirTil.inc, winRad.incAng);
  connect(winRad.QAbsExtSha_flow, extCon.QAbs_flow);
  connect(winRad.QAbsIntSha_flow, intCon.QAbs_flow);
  connect(winRad.QAbsGlaUns_flow, window.QAbsUns_flow);
  connect(winRad.QAbsGlaSha_flow, window.QAbsSha_flow);
  connect(weaDat.weaBus, weaBus);
  connect(weaBus, HDirTil.weaBus);
  connect(HDifTilIso.weaBus, weaBus);
  connect(TOuts.T, weaBus.TDryBul);
  connect(uSha.y, winRad.uSha);
  connect(weaBus.winSpe, extCon.vWin);
end Window;

Buildings.HeatTransfer.Windows.Examples.BoundaryHeatTransfer

Information

Parameters

Type	Name	Default	Description
Area	A	1	Window surface area [m2]
Real	fFra	0.2	Fraction of frame, = frame area divided by total area
Boolean	linearizeRadiation	false	Set to true to linearize emissive power

Modelica definition

model BoundaryHeatTransfer 
  "Test model for the heat transfer at the window boundary condition"
  import Buildings;
  extends Modelica.Icons.Example;
  parameter Modelica.SIunits.Area A=1 "Window surface area";
  parameter Real fFra=0.2 
    "Fraction of frame, = frame area divided by total area";
  parameter Boolean linearizeRadiation = false 
    "Set to true to linearize emissive power";

  Buildings.HeatTransfer.Windows.ExteriorHeatTransfer extCon(A=A, fFra=fFra,
    linearizeRadiation=linearizeRadiation,
    absIRSha_air=glaSys.shade.absIR_a,
    absIRSha_glass=glaSys.shade.absIR_b,
    tauIRSha_air=glaSys.shade.tauIR_a,
    tauIRSha_glass=glaSys.shade.tauIR_b,
    haveExteriorShade=glaSys.haveExteriorShade,
    haveInteriorShade=glaSys.haveInteriorShade,
    F_sky=0.5) "Exterior convective heat transfer";
  Modelica.Blocks.Sources.Constant TOut(y(unit="K"), k=273.15) 
    "Outside air temperature";
  Modelica.Blocks.Sources.Constant TRooAir(k=293.15, y(unit="K")) 
    "Room air temperature";
  Modelica.Blocks.Sources.Constant TRooRad(k=293.15, y(unit="K")) 
    "Room radiative temperature";
  Modelica.Blocks.Sources.Ramp uSha(duration=1, startTime=0) 
    "Shading control signal";
  Modelica.Blocks.Sources.Constant vWin(k=1) "Wind speed";
  Buildings.HeatTransfer.Sources.PrescribedTemperature TOuts 
    "Outside air temperature";
  Buildings.HeatTransfer.Sources.PrescribedTemperature TRAir 
    "Room air temperature";
  Modelica.Blocks.Sources.Constant fClr(k=0) "Fraction of sky that is clear";

  Buildings.HeatTransfer.Data.GlazingSystems.DoubleClearAir13Clear glaSys2(
    shade=Buildings.HeatTransfer.Data.Shades.Gray(),
    UFra=2,
    haveInteriorShade=false,
    haveExteriorShade=false) "Parameters for glazing system";
  Buildings.HeatTransfer.Data.GlazingSystems.SingleClear3 glaSys1(UFra=2);
  Buildings.HeatTransfer.Data.GlazingSystems.TripleClearAir13ClearAir13Clear
    glaSys3(UFra=1) "Parameters for glazing system";
  Buildings.HeatTransfer.Data.GlazingSystems.DoubleClearAir13Clear glaSys(
    shade=Buildings.HeatTransfer.Data.Shades.Gray(),
    UFra=1.5,
    haveExteriorShade=true,
    haveInteriorShade=false) "Parameters for glazing system";
 Buildings.HeatTransfer.Radiosity.IndoorRadiosity radIn(
    final linearize=linearizeRadiation, final A=A) "Indoor radiosity";
protected 
  Buildings.HeatTransfer.Radiosity.RadiositySplitter radShaOut 
    "Radiosity that strikes shading device";
public 
  Buildings.HeatTransfer.Windows.BaseClasses.ShadingSignal shaSig(haveShade=true) 
    "Conversion for shading signal";
  Buildings.HeatTransfer.Sources.PrescribedTemperature TRAir1 
    "Room air temperature";
  Buildings.HeatTransfer.Sources.PrescribedTemperature TRAir2 
    "Room air temperature";
  Buildings.HeatTransfer.Sources.PrescribedTemperature TRAir3 
    "Room air temperature";
  Modelica.Blocks.Sources.Constant QAbsSW_flow(k=0) "Absorbed solar radiation";
equation 
  connect(uSha.y, extCon.uSha);
  connect(TOuts.port, extCon.air);
  connect(TRooAir.y, TRAir.T);
  connect(fClr.y, extCon.f_clr);
  connect(extCon.vWin, vWin.y);
  connect(TOuts.T, TOut.y);
  connect(shaSig.y,radShaOut. u);
  connect(radIn.JOut, radShaOut.JIn);
  connect(shaSig.u, uSha.y);
  connect(radShaOut.JOut_2, extCon.JInUns);
  connect(radShaOut.JOut_1, extCon.JInSha);
  connect(radIn.heatPort, TRAir.port);
  connect(extCon.JOutUns, radIn.JIn);
  connect(extCon.JOutSha, radIn.JIn);
  connect(TRooAir.y, TRAir1.T);
  connect(TRooAir.y, TRAir2.T);
  connect(TRooAir.y, TRAir3.T);
  connect(TRAir1.port, extCon.glaUns);
  connect(TRAir2.port, extCon.glaSha);
  connect(TRAir3.port, extCon.frame);
  connect(extCon.QAbs_flow, QAbsSW_flow.y);
end BoundaryHeatTransfer;