Hi all,
I’ve been looking at incident direct radiation on different facade orientations in Riyadh. I would expect symmetrical results, but I noticed much higher incident direct radiation on the west facade (in the pm) than on the east facade (in the am). I’m using this weather file.
If anything, I would expect more radiation in the morning, when the air is clearer, but I’m not an expert on meteorology.
Any insights would be appreciated!
Thank you,
Joe
The sun is usually stronger in the afternoon / evening as it sets, and that is why the radiation is stronger. West facing facades usually need more solar control thanE facing facades. I would say these results make sense.
I also do not think epw files contain enough information about the air quality that it can simulate potential haziness or pollution that would affect the radiation in evening
Is ýour building facing an exact cardinal direction? One easy way to test if this is something specific to Riyadh would be to swap out the weather data from a few other places and compare.
