Hello, I'm trying to model a vertical vented cavity in EnergyPlus 8.8 using various thermal zones and an airflow network. I would like to use the first thermal zone (zone 1 in figure) as a "fake" zone to control the inlet volume. That is, the real inlet grid is located on top of zone 1 and the actual cavity starts from zone 2.
Figure: https://drive.google.com/file/d/1ai11miPZJ2GMUF-uY8l_6vjp6ja7_XOx/view?usp=sharing
My question is about the vertical wall in zone 1 (highlighted in blue in figure). I would like that vertical surface to be essentially inexistent, it should transmit short and longwave radiation and not participate in convective/conductive exchange between zone 1 and the exterior. I have already set that surface to be always open for the airflow model. The best answer would be to use an IRT (Infrared Transparent) material, but it can only be applied to internal surfaces beween two zones: this should be an external surface instead. Other options could be to use something like a Virtual surface or an Air Wall but I don't know how to model them directly in EnergyPlus (editing the IDF).
Any suggestion is welcome, thank you very much.
