DesignBuilder IDF rotation error
I created my model in DesignBuilder and exported the IDF at 0 degree orientation. Now I have python script which would run the IDF with the help of EP to generate TM59 Overheating Criteria A and Criteria B results in 4 different orientations i.e 0°, 90°, 180° & 270°. The problem is, 0° gives exactly the same results as DB but 90°, 180° & 270° shows different values. I want all the 4 orientation to give same results as DB. I assume that DB and EP rotates the model in different fashion. What could be a solution to this?
I'd export the IDFs from DB and compare them with a text comparison tool (e.g. BeyondCompare). See what DB is doing to rotate the models; it should only be changing the north axis field in the Building object.
My script is changing the North from 0 to 90 in the IDF exported from DB and then running the sim for 90 degree. But this 90 degree result (generated by my script) doesn't matches with the actual DB result.
As per my understanding DB changes the vertex and few more things. I'm doing this for the first time and can't understand whats the way out.
Can you export the rotated IDFs from DB? I suggest you do that to see how DB is rotating the building.