[EnergyPlus_Support] Auxiliary Program : Basements - 3D

["lau_druet" <Lau_druet@xxxxxxxx>]

My questions are about the auxiliary Program Basements-3D.

Could you please explain the difference between the following fields?
?X	BldgData Object	:	Floor Slab thickness (typical value 
2,5)
?X	EquivSlab Object	:	SlabDepth: Thickness of the 
floor slab (typical value 0,1)

I guess one of these corresponds to the thickness of the ¡§roof¡¨ of 
the basement and the other to the floor. But I don¡¦t know which is 
which.

Another thing is that it seems that the field ¡§Floor Slab thickness¡¨ 
in the ¡§BldgData Object¡¨ doesn¡¦t admit values smaller than 0.2. The 
program tries to calculate, after half an hour it gives a result but 
there are not temperatures but ¡§NA¡¨ values. I would suggest 
specifying that in the definition of the field in the ¡§Description of 
the objects¡¨ chapter.

In the ¡§Interior Object¡¨, the first field specifies if the basement 
is conditioned or not. I have been trying and it seems that although 
we chose ¡§false¡¨, the program always considers the temperature in 
the ¡§ComBldg Object¡¨. So the only way to determine the temperatures 
in an unconditioned basement is to first impose the air basement 
temperature and then use the results of running ¡§basements¡¨ in an E+ 
file to find the air basement temperature and do this process until 
it converges. Is it right?

Thanks for answering as soon as possible.
Laurence.


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