modelZenithAngle

Zenith angle
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Extends from Modelica.Blocks.Icons.Block (Basic graphical layout of input/output block).

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.

Connectors

TypeNameDefaultDescription
Modelica.Blocks.Interfaces.RealOutputyZenith angle
WeatherData.BusweaBusWeather data

Revisions

  • May 15, 2026, by Jianjun Hu:
    Changed the class type from block to model.
    This is for IBPSA, #2122.
  • September 6, 2021, by Ettore Zanetti:
    Changed lat from being a parameter to an input from weather bus.
    This is for IBPSA, #1477.
  • February 25, 2012, by Michael Wetter:
    Changed model to get declination angle and solar hour angle from weather bus.
  • May 17, 2010, by Wangda Zuo:
    First implementation.