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

[Ricardo Gallegos]

Hello all.
I once used this trick:
Open the file with the skp buildibg.
Zoom out as much as posible
Create a trnsys zone in a blank place of the sirven
Copy the whoke buiding
Paste into the trnsys zone.
Erase the skp drawing
Zoom in and center your New zone.

It worked for a very simple building, i.e. a house with a single zone.
Hope this wirks for you.
Regards
Ricardo


El lunes, 31 de enero de 2022, David BRADLEY via TRNSYS-users <
trnsys-users at lists.onebuilding.org> escribió:

> 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 listTRNSYS-users at lists.onebuilding.orghttp://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:+1.608.278.1475d.bradley at tess-inc.com
>> http://www.tess-inc.comhttp://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:+1.608.274.2577d.bradley at tess-inc.com
> http://www.tess-inc.comhttp://www.trnsys.com
>
>
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