[TRNSYS-users] Maximum number of surfaces in a 3D building?

[David BRADLEY]

Paula,
   I believe that there is a 999 surface limit in TRNBuild/Trnsys3D. 
However, you are quite far from that and I don't know whether there is a 
limit to the number of different orientations that can be handled. It is 
normal that there would not be any visible connections between the 
Type15 and the Type56; these connections are made implicitly in Trnsys17 
so long as you have "internal" selected for each ORIENTATION listed in 
TRNBuild. From your message I am not entirely clear whether you are 
getting an error message or whether Trnsys is not functioning normally. 
I would recommend that you send the *.tpf and *.b17 to your distributor 
for some assistance.
kind regards,
  David


On 5/1/2015 5:00 PM, Paula Claudino wrote:
> Hello,
>
> I have created a 3D model of a building with 87 external surfaces, 
> using Sketchup. When I import this model using the 3D Building Wizard, 
> the resulting model includes two Type15 weather units. The first 
> Type15 unit has 25 surfaces, most of which are linked to the radiation 
> calculator, the second Type15 unit has 62 surfaces, with only one 
> connection to the radiation calculator and this connection has a 
> duplicate name and is therefore invalid. There are no connections 
> between the Radiation Calculator and the Type56 unit.
>
> I thought that the issue might be related to a limit on the number of 
> constants allowed, so I modified TrnsysConstants.F90 and rebuilt 
> TRNDll.dll, but the same issue occurs.
>
> I can manually merge the two Type15 units by modifying the input file, 
> but manually linking everything will be quite tedious. I would prefer 
> to figure out how to make the wizard work correctly, if possible.
>
> Any ideas on what to try next?
>
> -- 
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> l’environnement.
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>
>
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-- 
***************************
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 at tess-inc.com

http://www.tess-inc.com
http://www.trnsys.com

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