Design questions :
What directions produce the most solar gain ?
What is the impact of orientation on average daily solar radiation ?
The four images on the left calculate total radiation (direct + diffuse) at 36 directions in four seasons.
The image on the right calculates annual radiation (direct + diffuse) at 36 directions.
Sky density method : Tegenza Sky (reference link) Reinhart
Total radiation in different orientation for the whole year and each season