[EnergyPlus_Support] Re: Input 3 D Autocad files in Energy plus.

["marcello.dallolio" <marcello.dallolio@xxxxxxxx>]

Hi,
in EnergyPlugged surfaces selection is limited to AutoCAD regions.  
EnergyPlugged recognizes regions that are composed by a single closed 
shape made up of lines (no holes within).

The easiest way to draw walls, roofs, floors... is to start drawing a 
3D Solid for each zone. Then explode it to get a region from each 
planar side. Then continue drawing closed lines and convert them into 
regions for windows, doors, shading elements?
You can also import mesh from other CAD programs then convert them 
into regions ("region" and select it). Multiple coplanar regions can 
be united ("union"), subtracted ("subtract") and intersected 
("intersect"). So if you have a planar surface composed by multiple 
regions you can convert them into a single region.
Search in the AutoCAD help "3d solid", "explode" and "region" to get 
more informations.

You can get geometry data from a region by launching EnergyPlugged 
("EPLUGGED") then expanding the <<Thermal Zone Description/Geometry>> 
group on the Class List tree and selecting one of 
Surface:HeatTransfer, Surface:HeatTransfer:Sub, 
Surface:Shading:Detached:Fixed, Surface:Shading:Detached:Building, 
Surface:Shading:Attached. You will see the Select... button active on 
the right above the Object Detail table. Click on this button and 
follow the instructions in the AutoCAD command line (select a region 
you previously have drawn...).
After having inserted as many tables as surfaces, EnergyPlus requires 
that you add a single SurfaceGeometry table (you can find it in the 
same <<Thermal Zone Description/Geometry>> group). In this object you 
specify the same "rules" you have kept before (VertexEntry=CCW, 
SurfaceStartingPosition=LLC if you haven't changed them).

Marcello

--- In EnergyPlus_Support@xxxxxxxxxxxxxxx, "gv.deepak" 
<gv.deepak@...> wrote:
>
> Hi 
> 
> I have been told that we can use Energy Plugged to input 3d Autocad
> files into Energy Plus. So I was trying to use the interface, I am
> facing some problem with selecting the elements of the autocad file
> using Energy Plugged.
> 
> Does anyone have any experience with Energy plugged or does anyone
> know how to create 3 D regions in Autocad...? 
> 
> Thank you
>



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