SolarEWAxisPrimary (FUN)

FUNCTION SolarEWAxisPrimary : LREAL

This function calculates angle of east to west axis according to azimuth, elevation and correction alignment factor.

Alignement correction is the angle between system axis and east (clockwise)

../../../../../../_images/AlignmentCorrection.jpg

Output parameter is the angle of east to west axis for solar tracking. Format: Degrees, (0°= Zenith , -90°= North, 90°= South)

../../../../../../_images/SolarEWAxisPrimaryOutput.jpg
InOut:

Scope

Name

Type

Initial

Comment

Return

SolarEWAxisPrimary

LREAL

Input

Azimuth

LREAL

0

1: Topocentric azimuth angle. Eastward from north. (0°=360°=north , 90°=east , 180°=south , 270°=west). Format: Degrees, Range of values: 0 to 359.9999

Elevation

LREAL

0

2: Topocentric elevation angle. (0°=sunrise , 90°= zenith). Format: Degrees. Range of values: -90.00 to 90.00. Negative values=darkness

AlignmentCorrection

LREAL

0

3: Axis alignment. Angle between system axis and east (clockwise). Format: Degrees. Range of values: -180.00 to 180.00.