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Energy+ IDF Parsing error

asked 2015-07-18 09:12:48 -0500

updated 2015-07-18 09:47:01 -0500

I exported my openstudio model to IDF. E+ runs the IDF fine but when I try to edit the file in E+ it said "IDF Parsing error" I checked the lines in notepad and they look fine.

Any ideas how to solve this? Thanks!

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answered 2015-07-18 09:46:47 -0500

By default, BuildingSurface:Detailed only supports surfaces with 120 of fewer vertices. Here is the cutout from the Energy+.idd file.

  BuildingSurface:Detailed,
\memo Allows for detailed entry of building heat transfer surfaces.  Does not include subsurfaces such as windows or doors.
  \extensible:3 -- duplicate last set of x,y,z coordinates (last 3 fields), remembering to remove ; from "inner" fields.
  \format vertices
  \min-fields 19
 ...
N360, \field Vertex 120 X-coordinate
       \units m
       \type real
  N361, \field Vertex 120 Y-coordinate
       \units m
       \type real
  N362; \field Vertex 120 Z-coordinate
       \units m
       \type real

You may be able to overcome this by modifying your local Energy+.idd file and adding

N363, \field Vertex 121 X-coordinate
       \units m
       \type real
  N364, \field Vertex 121 Y-coordinate
       \units m
       \type real
  N365, \field Vertex 121 Z-coordinate
       \units m
       \type real
N366, \field Vertex 122 X-coordinate
       \units m
       \type real
  N366, \field Vertex 122 Y-coordinate
       \units m
       \type real
  N367; \field Vertex 120 Z-coordinate
       \units m
       \type real

for as many vertices as you need.

One important and relevant question is—why do you have a surface with more than 120 vertices? Do you really need that many? Does this surface have a highly irregular perimeter? Or is it a circle that can be approximated using fewer vertices, e.g., 36?

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Comments

Thanks Amir. I really appreciate your help. The surface is a long corredor roof at the top flor. I did the model in sketchup so all vertices are imported to the IDF. I will try to change the surface in E+ to a simple square shape with the same area.

obuchely gravatar imageobuchely ( 2015-07-18 10:33:00 -0500 )edit

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Asked: 2015-07-18 09:12:48 -0500

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Last updated: Jul 18 '15