Height Scale for buoyancy-driven (EnergyPlus)
Thank you for your help in advance. I would like to know how to determine the Height Scale for buoyancy-driven ventilation which is part of the class "SurfaceProperty:ExteriorNaturalVentedCavity" in EnergyPlus. I have read somewhere that it is usually the half of the total height of the facade, but I am not sure about this answer. I do reiterate my gratitude.
UPDATE
Thank you for your response, Denis. It was incredibly helpful, as was the link you provided.
We are currently modeling an apartment on the fourth floor of a building, with the floor located 13 meters above ground level. While we're not sure of the regulations in Canada, in Spain, any cavity in the façade must be interrupted at each floor level to prevent the spread of fire in the event of an emergency. Accordingly, the cavity in our model is interrupted on every floor, approximately every 3 meters, as shown in the attached drawing (image adapted from the one published on this website: https://acortar.link/lNaOAf).
We hope you don't mind if we ask for further clarification. In our case, a four-floor apartment with the cavity "insulated" as described above, should the Height Scale for Buoyancy-Driven Ventilation be calculated as half the floor height (i.e., 1.35m)? Or should it be considered as 14.35 meters (13m + 1.35m) to account for the change in wind speed with altitude?
Thank you very much in advance for your assistance.
Attached drawing: https://ibb.co/NLzs7QG
