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Azimuths do not match

asked 2015-01-22 11:45:42 -0600

MattStewart's avatar

updated 2015-07-10 09:03:32 -0600

Greetings, Has anyone encountered this error? "GetSurfaceData: InterZone Surface Azimuths do not match as expected." The model had been running. I have no idea what would cause this. Your advise is appreciated. Thank you kindly, Matt

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Matt, could you let us know which application(s) you are using? Presumably EnergyPlus, but are you using it on its own or within OpenStudio?

rpg777's avatar rpg777  ( 2015-01-22 12:23:21 -0600 )edit

I am using it with Open Studio. I have a vaulted ceiling with cavities on either side.

MattStewart's avatar MattStewart  ( 2015-01-22 21:19:55 -0600 )edit

3 Answers

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answered 2015-01-22 14:01:47 -0600

Interzone surfaces transfer heat between zones, and they are described as two mirrored surfaces, one for each zone. So, if you have a wall, for example, in Zone 1 with azimuth 90, then the matching wall in Zone 2 should have an azimuth of 270. This error message should give you more details on the specific surfaces in question, but you may need to add Output:Diagnostics, DisplayExtraWarnings; to see that information.

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answered 2015-01-22 23:50:22 -0600

MattStewart's avatar

Thank you to all who responded. This error has been corrected.
I was able to right click and reverse surfaces and the Azimuth problem was corrected. Also, I had surfaces that where a roof/ceiling was mating to a roof ceiling. Changing roof/ceiling to floor for these surfaces fixed the Tilt problem. Thank you, Matt

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Hi @MattStewart, could you please tell me where did you right click to solve this problem?

hugopft's avatar hugopft  ( 2015-07-23 09:30:26 -0600 )edit

answered 2022-02-14 06:57:54 -0600

MHall's avatar

Hi all, today I have the same problem but I have solved it. The sequence of the vertexes should be clockwise in the first surface and counter clockwise in the mirrored surface. If you have a surface with four vertexes 1-4, they are for the mirrowed suface the other way round: e.g

  • surface -> mirrored surface
  • 0,0,0 vertex 1 -> vertex 4
  • 1,0,0 vertex 2 -> vertex 3
  • 1,0,2,vertex 3 -> vertex 2
  • 0,0,2,vertex 4 -> vertex 1

I have changed it manually in the osm file. Maybe there is a more elegant way.

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Asked: 2015-01-22 11:45:42 -0600

Seen: 1,024 times

Last updated: Feb 14