.IDEAS.BoundaryConditions.SolarGeometry.BaseClasses.WallSolarAzimuth

Information

This block computes the wall solar azimuth angle. It is the angle between the projection of the sun ray on a horizontal surface and the line perpendicular to the wall. The value of this angle varies from 0 to 180 degrees. In the northern hemisphere at solar noon, the value of the wall solar azimuth angle is zero if the wall is facing south.

Revisions

• July 5, 2012, by Michael Wetter:
  Decreased deltaX from 1e-3 to 1e-4, as the looser tolerance gives sharp changes in IDEAS.HeatTransfer.Windows.BaseClasses.Examples.Overhang.
• February 23, 2012, by Michael Wetter:
  Guarded against division by zero because the altitude angle can be 90 degree in the tropics, and hence its cosine can take on zero.
• Feb 01, 2012, by Kaustubh Phalak
  First implementation.