Sun Hours Simulation

There are 3 extreme sun paths:

Summer solstice | 21st June
Winter solstice | 21st December
Spring/Autumn equinox | 21st March/September

These represent the most extreme sun patterns.

Instead of tracing light beams from the source, light beams are traced from a target towards the light source. In this case, the solar radiation contributed by the sun rays are calculated by tracing a light path from the target towards the sun location.

In the event of an obstruction, light ray is terminated and the target is shaded.

The results are analysed across the day to identify achievable hours of sunlight for each hour.

These daily cumulative values are then mapped to the measurement points to visualise the distribution of sun hours across the facade.