Buildings.BoundaryConditions.SolarGeometry

Information

Package Content

Name	Description
IncidenceAngle	Solar incidence angle on a tilted surface
ZenithAngle	Zenith angle
Examples	Collection of models that illustrate model use and test models
BaseClasses	Package with base classes for Buildings.BoundaryConditions.SolarGeometry

Buildings.BoundaryConditions.SolarGeometry.IncidenceAngle

Information

This component computes the solar incidence angle on a tilted surface. For a definition of the parameters, see the User's Guide Buildings.BoundaryConditions.UsersGuide.

Parameters

Type	Name	Default	Description
Angle	lat		Latitude [rad]
Angle	azi		Surface azimuth [rad]
Angle	til		Surface tilt [rad]

Connectors

Type	Name	Description
output RealOutput	y	Incidence angle [rad]
Bus	weaBus

Modelica definition

block IncidenceAngle "Solar incidence angle on a tilted surface"
  extends Modelica.Blocks.Interfaces.BlockIcon;
public 
  parameter Modelica.SIunits.Angle lat "Latitude";
  parameter Modelica.SIunits.Angle azi "Surface azimuth";
  parameter Modelica.SIunits.Angle til "Surface tilt";

  Modelica.Blocks.Interfaces.RealOutput y(
    final quantity="Angle",
    final unit="rad",
    displayUnit="deg") "Incidence angle";
protected 
  Buildings.BoundaryConditions.SolarGeometry.BaseClasses.Declination decAng 
    "Declination angle";
  Buildings.BoundaryConditions.SolarGeometry.BaseClasses.SolarHourAngle
    solHouAng "Solar hour angle";
  Buildings.BoundaryConditions.SolarGeometry.BaseClasses.IncidenceAngle incAng(
    final lat=lat,
    final azi=azi,
    final til=til) "Incidence angle";
public 
  WeatherData.Bus weaBus;
equation 
  connect(incAng.incAng, y);
  connect(decAng.decAng, incAng.decAng);
  connect(solHouAng.solHouAng, incAng.solHouAng);
  connect(weaBus.cloTim, decAng.nDay);
  connect(weaBus.solTim, solHouAng.solTim);
end IncidenceAngle;

Buildings.BoundaryConditions.SolarGeometry.ZenithAngle

Information

This component computes the zenith angle, which is the angle between the earth surface normal and the sun beam. For a definition of the parameters, see the User's Guide Buildings.BoundaryConditions.UsersGuide.

Parameters

Type	Name	Default	Description
Angle	lat		Latitude [rad]

Connectors

Type	Name	Description
output RealOutput	y	Zenith angle [rad]
Bus	weaBus

Modelica definition

block ZenithAngle "Zenith angle"
  extends Modelica.Blocks.Interfaces.BlockIcon;
public 
  parameter Modelica.SIunits.Angle lat "Latitude";
  Modelica.Blocks.Interfaces.RealOutput y(
    final quantity="Angle",
    final unit="rad",
    displayUnit="deg") "Zenith angle";
protected 
   Buildings.BoundaryConditions.SolarGeometry.BaseClasses.ZenithAngle zen(final lat=lat);
public 
  WeatherData.Bus weaBus;
equation 
  connect(zen.zen, y);
  connect(weaBus.sol.dec, zen.decAng);
  connect(weaBus.sol.solHouAng, zen.solHouAng);
end ZenithAngle;