[TRNSYS-users] False ceiling between 2 Zones seems to cause range check error

[Marina Stegelmeier]

Dear TRNSYS Users,

I have a problem with a multizone building model using TRNFlow and 
TRNSYS 3d. The building is an airplane hangar consisting of 3 airnodes 
on top of each other in one thermal zone. So far the model worked fine. 
Now, I want to model a false ceiling (just one thin layer of material) 
between the middle and upper airnode to reduce the heated air volume 
(the hangar ist too big for the type of airplane in it).
I changed the construction of the relevant surface of the middel airnode 
in Sketchup from virtual surface to adjacent ceiling (and accordingly to 
adj. floor for the upper airnode) and imported the new idf-file in 
TRNBuild. Instead of one, I have now two thermal zones because the space 
above the false ceiling is a zone itself. The false ceiling is an 
adjacent wall between the two zones and the adjacent airnodes are 
correct. I adapted the Airlink-Model a little and ran the simulation. 
Unfortunately I got a range check error, so the model doesn't work and I 
really don't know why...

Can anyone help or has somebody had a smiliar problem? I would be really 
grateful for comments.

Regards,
Marina Stegelmeier

-- 
Marina Stegelmeier, Dipl.- Ing.
Technische Universität Hamburg-Harburg
Institut für Umwelttechnik und Energiewirtschaft
Eißendorfer Straße 40
21073 Hamburg
Raum 1.016, Gebäude D
Internet: www.tuhh.de/iue
Telefon: 040/42878-4547
Fax: 040/42878-2315