Negative volumes in v8.9 despite all surfaces being correctly oriented [closed]

asked 2018-08-30 06:18:00 -0500

Carlos O's avatar

updated 2018-08-30 18:44:00 -0500

Dear all,

In a previous post for v8.8 ( ) a user reported that EnergyPlus was reporting negative values.

In v8.9 I'm also obtaining the same type of trouble, and it is also corrected with the same solution (specifying zone height instead of autocalculate). My model, as far as I have checked, has all the faces oriented correctly. And it is a simple shoe box type of model.

Is there a fix available for this?


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Closed for the following reason duplicate question by David Goldwasser
close date 2018-08-30 22:49:11.306184



If you look at the github issue in Jason's answer on the previous question, you will see that a fix was not added to EnergyPlus 8.9. I'm going to close this question as a duplicate.

David Goldwasser's avatar David Goldwasser  ( 2018-08-30 22:48:55 -0500 )edit

@david-goldwasser closing this is fine. At some point I should post a tutorial on how to use openstudio or euclid to make it easy to display walls that face the wrong direction.

JasonGlazer's avatar JasonGlazer  ( 2018-08-31 07:56:37 -0500 )edit

@JasonGlazer, There is a Render by Surface Normal mode in the OpenStudio SketchUp Plugin, it would be really easy to do this in Euclid since it is just a minor tweak to a native SketchUp functionality. In Style dialog go to second cube in the top row of cubes it takes you to sub-style settings for texturing, then if you pick the second cube in row of cubes in the bottom, it uses a front and back face color, we alter that to red and white.

David Goldwasser's avatar David Goldwasser  ( 2018-08-31 09:10:24 -0500 )edit

Didn't have enough room left for link to screenshot.

David Goldwasser's avatar David Goldwasser  ( 2018-08-31 09:10:35 -0500 )edit

Nice, I wasn't aware of that option. Thanks.

JasonGlazer's avatar JasonGlazer  ( 2018-08-31 09:15:16 -0500 )edit