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<p style="margin-top:0;margin-bottom:0">Thank you David. I was able work around it by manually flipping the faces appropriately. Also, I have been researching the availability of VRF/VRV heat pump components on TRNSYS but the last I heard a model was being
<span style="font-size: 12pt;">developed at Oak Ridge </span><span style="font-size: 12pt;">National Labs back in 2012. Is there a chance it could be made available either commercially or for my specific research. I'm trying to make a model matching a product
that runs on a VRF heat pump with fan coils inside the building thermal zones.</span></p>
<p style="margin-top:0;margin-bottom:0"><span style="font-size: 12pt;"><br>
</span></p>
<p style="margin-top:0;margin-bottom:0"><span style="font-size: 12pt;">Thank you</span></p>
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</span></p>
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<div id="divRplyFwdMsg" dir="ltr"><font face="Calibri, sans-serif" style="font-size:11pt" color="#000000"><b>From:</b> David BRADLEY <d.bradley@tess-inc.com><br>
<b>Sent:</b> 02 April 2018 11:47:58<br>
<b>To:</b> TRNSYS users mailing list at OneBuilding.org<br>
<b>Cc:</b> Okafor, Nnamdi G; Taherian, Hessam<br>
<b>Subject:</b> Re: [TRNSYS-users] TRNBUILD / SKETCHUP Malfunction</font>
<div> </div>
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<div style="background-color:#FFFFFF">Gabriel,<br>
There doesn't appear to be anything corrupted about the *.idf file you sent. All of the things that are going wrong with it can be fixed. My recommendation, however, would be to start over and import the *.idf into TRNBuild for checking a number of times
as you build the model geometry one zone at a time. <br>
<br>
First, draw the crawlspace zone in SketchUp/Trnsys3d and make sure that it's bottom is set as GROUND_FLOOR with "Ground" as the outside boundary condition. Make sure too that the "ceiling" of the crawlspace is red and that it is recognized as ROOF_EXT. Save
the *.idf, open TRNBuild and select File: Import Trnsys3d. Verify things like wall/floor areas and volumes. There is no need to keep the imported file; at this point you're just checking geometry.<br>
<br>
Go back to SketchUp and draw the extents of one of the three ground floor zones (BEDROOM_GND perhaps) on the roof of the CRAWLSPACE zone. Create a new zone and draw BEDROOM_GND. Do the automatic surface matching procedure then go back and verify that the
floor of BEDROOM_GND and the ceiling of CRAWLSPACE have discovered each other. Save the *.idf with a new name, open TRNBuild and select File: Import Trnsys3d. Verify things like wall/floor areas, volumes, and adjacencies. If there is anything at all wrong
throw away the file and go back to fix it in SketchUp. <br>
<br>
I have had weird things happen in this process more times than I care to admit. The best advice I can give is to check the import to TRNBuild manually ( as opposed to using the wizard that creates a 3d building project automatically) after every single zone
that you add.<br>
<br>
I have tried to address some of your specific questions below:<br>
<br>
<i>-- After drawing the zones and surfaces appropriately they always come up inaccurate. I end up having to select face type, reverse faces or use surface matching.</i><br>
<br>
this definitely happens from time to time. It should not happen every time though. I draw my zones as though they were a wire frame using the pencil tool. I stay away from the automatic shapes and from the extrusion tool unless they are absolutely necessary
(like when you have a circular floor plan zone).<br>
<br>
<i>-- Surface matching doesn't seem to do anything</i><br>
<br>
you have to go back to individual surfaces and check them. Surface matching does not display a message saying that it is done or that it succeeded or failed. In more complicated models it can take awhile to complete in which case you'll see a progress bar in
the lower left corner of the window.<br>
<br>
<i>-- After importing to TRNBuild it generates errors on ADJ Ceilings and says they are not found with the related zone faces set as undefined.</i><i><br>
</i><br>
again, this can happen sometimes. It should not be an all the time thing.<br>
<br>
<i>-- I tried importing the raw Sketchup file without changing the faces or flipping anything and there were no errors in TRNBUILD</i><br>
<br>
I suspect that all of the walls are set to EXT_WALL in that case and that there are no adjacencies between any of the zones.<br>
<br>
<i>-- I then tried to modify the faces in TRNBUILD instead of sketch up but I could only change the wall type. The category section was greyed out and the change doesn't seem to reflect in the surface properties at all.</i><i><br>
</i><br>
the geometry information is being inherited by TRNBuild from SketchUp. Changes that you make in TRNBuild are not automaticlly exported back to SketchUp. I would not recommend making this kind of change in TRNBuild.<br>
<br>
There is a tutorial / manual for using Trnsys3d/Sketchup located in: ..\Trnsys17\DocumentationA4_3DBuildingTutorial.pdf. If you haven't found it already then it might be worth going through.
<br>
<br>
kind regards,<br>
David<br>
<br>
<br>
<br>
<b><br>
</b>
<div class="x_moz-cite-prefix">On 03/30/2018 13:48, Okafor, Nnamdi G via TRNSYS-users wrote:<br>
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<p dir="ltr" style="">Hello,</p>
<p dir="ltr" style=""><br>
</p>
<p dir="ltr" style="">I need help with this please. I drew a building model on Sketchup with the TRNSYS plugin and imported into TRNbuild (idf and two b17 files attached). I am using Sketchup 2015 version. There are several problems and I'd try to simplify.</p>
<p dir="ltr" style=""><br>
</p>
<div dir="ltr" style="">
<ul style="margin-top:0px; margin-bottom:0px">
<li>
<div style="margin-top:0px; margin-bottom:0px"> After drawing the zones and surfaces appropriately they always come up inaccurate. I end up having to select face type, reverse faces or use surface matching.</div>
</li><li>
<div style="margin-top:0px; margin-bottom:0px">Surface matching doesn't seem to do anything</div>
</li><li>
<div style="margin-top:0px; margin-bottom:0px">The interior ceilings which should be matched as adjacent ceilings are not matched appropriately and I had to manually set the outside boundary conditions to "zone" and
<span>outside boundary object set to the "appropriate zone name".</span></div>
</li><li>
<div style="margin-top:0px; margin-bottom:0px"><span>After importing to TRNBuild it generates errors on ADJ Ceilings and says they are not found with the related zone faces set as undefined.</span></div>
</li><li>
<div style="margin-top:0px; margin-bottom:0px"><span>I tried importing the raw Sketchup file without changing the faces or flipping anything and there were no errors in TRNBUILD</span></div>
</li><li>
<div style="margin-top:0px; margin-bottom:0px"><span>I then tried to modify the faces in TRNBUILD instead of sketch up but I could only change the wall type. The category section was greyed out and the change doesn't seem to reflect in the surface properties
at all.</span></div>
</li></ul>
</div>
<p style="margin-top:0px; margin-bottom:0px"><span><br>
</span></p>
<ul style="margin-top:0px; margin-bottom:0px">
<li>
<div style="margin-top:0px; margin-bottom:0px"><span>In summary. The software doesn't identify surfaces especially adjacent ceilings and surface matching plugin doesn't match the faces properly.</span></div>
</li><li>
<div style="margin-top:0px; margin-bottom:0px"><span>Adjusting these manually creates errors in TRNBUILD</span></div>
</li><li>
<div style="margin-top:0px; margin-bottom:0px"><span>Adjusting in TRNBUILD is only partial as the category is greyed out and the change doesn't seem to reflect in the B17 file</span></div>
</li></ul>
<div style="margin-top:0px; margin-bottom:0px"><span><br>
</span></div>
<div style="margin-top:0px; margin-bottom:0px"><span>I hope this makes some sense. Thank you.</span></div>
<div style="margin-top:0px; margin-bottom:0px"><span><br>
</span></div>
<p>Best Regards</p>
<p><br>
</p>
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<b><span lang="EN-US" style="">Gabriel <span>Okafor|Graduate</span> Teaching Assistant</span></b><span lang="EN-US"></span></p>
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<pre class="x_moz-signature" cols="72">--
***************************
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
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