[TRNSYS-users] Simulating a large building of which we have the 2D Autocad2020 plans

[David BRADLEY]

Souad,

  The situation is basically the same; there is not a way to 
automatically convert a *.skp file to an *.idf but you can use the tools 
in Trnsys3d to create zones and then trace over the lines in the *.skp 
file so as to associate them with the zones that you have created.

kind regards,

  David


On 01/31/2022 12:03, Lakjiri Souad wrote:
> Dear David
> For this time, I have the model 3D (with sketchup 2018)of my building 
> but with the extension .Skp not .idf
> The model 3D  I have was drawn considering just architectural data 
> without taking in account the thermal zoning! Is there a way to 
> convert the file .SKp to .idf for a simulation with trnsys18, giving 
> that my building is complex and large!?
> Thank you in advance
>
>
> On Fri, 20 Nov 2020 at 15:25 David BRADLEY <d.bradley at tess-inc.com> wrote:
>
>     Souad,
>
>      I believe that there is a way of opening a 2d dwg as a background
>     image in SketchUp so that you can then trace over it more quickly
>     than if you were to start from nothing. Still, each time that I
>     have encountered this issue I have found that it takes juat about
>     the same amount of time if fight with and correct an automatic
>     import or if you start from nothing.
>
>      Here are a few tips that might help.
>
>     1. use as few thermal zones as possible on each floor. Often you
>     can group together rooms that face a certain direction (i.e. have
>     a particular sun exposure) into a single thermal zone.
>
>     2. model the plenum between floors as its own zone; this makes it
>     much easier to deal with the zone adjacencies from one floor to
>     the next.
>
>     3. rely heavily on the line drawing tool. Draw the perimeter of
>     each thermal zone's floor then draw vertical lines for the corners
>     then connect their tops. I have run into a lot of frustrations
>     with the extrude tool.
>
>     4. where possible avoid copying and pasting zones. It is nearly as
>     fast to draw another floor perimeter and walls. When I try copying
>     and pasting I sometimes have trouble with SketchUp selecting
>     things that aren't part of the zone that I am trying to copy.
>
>     5. do all the walls floor by floor first and then add windows
>     after you have all the walls completed.
>
>     6. import the *.idf into TRNBuild and check adjacencies early and
>     often. I don't usually do more than 3 or 4 zones before I save the
>     *.idf, import it into TRNBuild, check it and then increase the
>     version number in the name of my *.idf file. When you run into
>     import errors I find it is often easier just to start over and
>     redraw a few zones than it is to figure out where the error is.
>
>     7. this one is rather specific but if you are drawing opaque doors
>     (i.e. walls contained within another wall) make a vertical line
>     between the middle of the door lintel and the ceiling. This will
>     break the containing wall into two walls and while that adds
>     another surface for Type56 to deal with I have found that it
>     avoids a lot of wall area calculation issues and errors in the
>     *.idf file.
>
>     best,
>
>      David
>
>
>
>     On 11/20/2020 06:50, Lakjiri Souad via TRNSYS-users wrote:
>
>>     Dear Trnsys users,
>>     I want to simulate a complex building by TRnsys 18.I have the
>>     plans of the building drawn in 2D by Autocad2020 .
>>     What are the possible and easy ways to generate and insert the 3
>>     D building in TRnbuild18 using the 2 D autocad 2020 plans?
>>     knowing that The building is large and it would take a lot of
>>     time if we use the sketchup18 to model it in 3D .
>>     -- 
>>     Souad Lakjiri
>>     Electrical Project Engineer
>>     Morocco's Ministry of Health
>>
>>     _______________________________________________
>>     TRNSYS-users mailing list
>>     TRNSYS-users at lists.onebuilding.org
>>     http://lists.onebuilding.org/listinfo.cgi/trnsys-users-onebuilding.org
>
>     -- 
>     ***************************
>     David BRADLEY
>     Principal
>     Thermal Energy Systems Specialists, LLC
>     3 North Pinckney Street - suite 202
>     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
>
> -- 
> Souad Lakjiri
> Electrical Project Engineer
> Morocco's Ministry of Health

-- 
***************************
David BRADLEY
Principal
Thermal Energy System Specialists, LLC
3 North Pinckney Street - suite 202
Madison, WI  53703 USA

P:+1.608.274.2577
d.bradley at tess-inc.com

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