Question-and-Answer Resource for the Building Energy Modeling Community
 | 1 | initial version |
Since E+ calculates the solar radiation reflection of ground and all other shading objects, for example other buildings, the surface outside face received both reflected and unreflected (direct) solar solar radiation. The total Surface Outside Face Sunlit Area is the area receive either direct (unreflected) or reflected solar. So the Surface Outside Face Sunlit Fraction equals Surface Outside Face Sunlit Area divided by total surface area.
