yair's profile - activity

Thanks Ivan, I remember you describe this approach when we met. One issue with it is that the results is a non-convex polygons. This, in turn, will cause sever errors when EnergyPlus calculates shadows (while I`ve found that these errors seem to have a minimal impact on results, if any at all, they are still Sever Errors).

So, if this is the case, I understand that I can not use a sub-surface to describe the ceiling of the case above? Is there any other approach, other than braking the roof into 4 non-convex surfaces as you described in your post above?

Thanks @David Goldwasser, I tried the first approach (hole as a sub-surface): describing it as a "FenestrationSurface:Detailed",(door) but got some issues: There seems to be an issue with the contradiction between the fenestration`s "Outside_Boundary_Condition_Object" (which I tried either "blank" or the name of the matching surface the floor above) and its source Building_Surface_Name (i.e., the roof, which is exposed to the sun and wind):* Severe * GetSurfaceData: Subsurface="W0" exterior condition [interzone surface] in a base surface="14" with exterior condition [ExternalEnvironment]

Is there a way to describe in the IDF file a surface with a hole?

My model has a hole in a roof, as in the images below. This hole is actually another building component - the ceiling of the space beneath or floor of a space above).

The model

The surface

I am trying to figure out if there's a way to describe this hole purely by describing the coordinates of the roof and the hole in the BuildingSurface:Detailed object.

Hi, I am trying to figure out how would it be possible to describe this roof in EnergyPlus`s .idf file. i.e, how should I described its inner and outer rings coordinates?

Thanks!