Modeling sun position and sky types
Natural lighting
Quizzed article REF: C3315 V3
Modeling sun position and sky types
Natural lighting

Authors : Yannick SUTTER, Bernard PAULE, François BOUVIER, Gilles COURRET

Publication date: May 10, 2020, Review date: October 15, 2021 | Lire en français

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4. Modeling sun position and sky types

4.1 Sun position

The sun's position on the celestial vault depends on latitude, day of the year and time of day. Its position is characterized by the sun's azimuth (angle to the south) and height (angle to the horizon) – see figure 15 .

For a latitude LAT, the solar height H is defined by :

sin(H)=sin(LAT).sin(d)+cos(LAT).cos(d).cos(AH)

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