Hello everyone!
I have encountered a problem. I was trying to build a sunken square in honeybee for thermal simulation. When I create a honeybee room, I do not know how to define the material or construction of the top of the zone. Because the sunken square is roofless. I have tried to define it as a air boundary, but the simulation engine would go wrong every time. Any suggestions? Thanks a lot !
Actually HB also simulates a surface not bound to a closed area as you see in the image below:
however, I do not think it is correct since by definition zones must be closed volumes.
To try to model your case I can think of two ways to try:
. The first is to create a closed zone where your square is the roof and walls and floor are developed underneath and are adiabatic.
. The second is to use a glazing type material (maybe not quite simple glazing) where I use high transmission on the visible and solar, taking out the reflections.
Logically the first seems better to me, I would however go and discretize your “square”-roof to better analyze the context contribution.
I hope I have been helpful.
Good work
Massimiliano
Hello, Massimiliano! Thanks a lot.
Right now, I am using the second method. For your first method, I am wondering how the heat transfer can be achieved if the roof is adiabatic.
Sorry for my English, maybe I didn’t explain myself well.
The sueprficies must all be adiabatic EXCEPT the roof. And I would also set an important internal mass in addition to the temperature of the dummy zone such as the ground.
On the other hand, in the case of the second method, you have to check that the zone temperature is similar to the outside temperature and set infiltrations as flow rates by retrieving the wind data.
Good work!
Massimiliano
Thanks a lot, Massimiliano.
I have come up with a new method. Instead of focusing on the sunken area itself, I suppose we can focus on the volume that forms the sunken area. The surrounding volume is a honeybee zone. As for the sunken area, I use the component Hb Shade to create. Then the sunken area is roofless.