Hi,

I am currently modeling an University building and the Atrium is partially open to the outdoor environment. For those boundary surfaces I have used the "Air Wall" construction, which is then converted into the Construction:AirBoundary object (EnergyPlus 9.3).

Nevertheless, when I make the simulation run I get an error saying that the Air Boundary object cannot be used for outer surfaces. Effectively, the I/O Reference reports the following:

"Construction:AirBoundary indicates an open boundary between two zones. It may be used for base surfaces and fenestration surfaces. When this construction type is used, the outside boundary condition of the surface must be either surface or zone."

So, here is my question: how can I model the boundary surfaces of a zone that is directly connected to the outdoor environment?

One potential solution I have thought about (although I do not really like it) is to add windows to those surfaces and let them be open all of the time. Is there anything a bit more "elegant" that I can use instead of the solution I have found?

Many thanks