[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index]
Re: [TRNSYS-users] False ceiling between 2 Zones seems to cause range check error
Marina,
Range check errors are hard to diagnose and really should not be your
problem to solve unless there are user-written components in the
simulation. You may have to send the project to your distributor from
assistance. However, two things that I would check before you do that
are as follows:
1. make sure that the false ceiling is modeled as a resistive layer and
not as a mass wall.
2. try running the simulation with constant convection coefficiencts on
both sides of the false ceiling (instead of using the internal
calculation mode)
Kind regards,
David
On 8/16/2013 04:28, Marina Stegelmeier wrote:
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
--
***************************
David BRADLEY
Principal
Thermal Energy Systems Specialists, LLC
22 North Carroll Street - suite 370
Madison, WI 53703 USA
P:+1.608.274.2577
F:+1.608.278.1475
d.bradley@tess-inc.com
http://www.tess-inc.com
http://www.trnsys.com