Question-and-Answer Resource for the Building Energy Modeling Community
Get s tarted with the Help page
Ask Your Question
1

Set Exterior Roof Assembly to User Input U Value doesn't work

asked 2016-11-03 07:15:01 -0500

shahin1992 gravatar image

updated 2017-09-03 10:01:50 -0500

i'm using the " Set Exterior Roof Assembly to User Input U Value" measure and for some reason it doesn't seem to work and i keep getting the same results no matter what value i input as a U-value for the exterior roof in my model ? Osm Model Regards

edit retag flag offensive close merge delete

Comments

Adding a direct link to the measure on the BCL would be helpful

Julien Marrec gravatar image Julien Marrec  ( 2016-11-03 08:17:50 -0500 )edit

1 Answer

Sort by ยป oldest newest most voted
1

answered 2016-11-03 08:24:15 -0500

updated 2016-11-08 05:32:17 -0500

As I said above, adding a direct link to the measure on the BCL would be helpful. In this case, it's critical: there are actually two measures with the same name, and one of them has an error.

This measure checks if the surface is a Wall instead of a RoofCeiling: https://bcl.nrel.gov/node/82299

This measure checks if the surface is a RoofCeiling: https://bcl.nrel.gov/node/82298 and had a problem before

The line in question is L154:

      if surface.outsideBoundaryCondition == "Outdoors" and surface.surfaceType == "Wall"

Initially this problem has been reported by Matt Steen on Github and corrected by David Goldwasser as highlighted here: https://github.com/NREL/OpenStudio/is.... This is the first thing that pops up when you google the name of the measure.

edit flag offensive delete link more

Comments

thank you for your reply but the problem is yet unsolved. i keep getting errors whenever i apply the measure Osm Measure

Applying the measure

Error

shahin1992 gravatar image shahin1992  ( 2016-11-07 08:00:20 -0500 )edit

Open the error log itself (stout and stderr likely). See http://nrel.github.io/OpenStudio-user...

Julien Marrec gravatar image Julien Marrec  ( 2016-11-07 08:53:02 -0500 )edit

thank you for your reply, here is the error log if i remove the measure, the model works just fine. here is my osm model

shahin1992 gravatar image shahin1992  ( 2016-11-07 09:25:26 -0500 )edit

Is there anything that looks useful for us when you open the stdout and stderr?

Julien Marrec gravatar image Julien Marrec  ( 2016-11-07 13:54:33 -0500 )edit

no, i don't think it has something that's important that's why i haven't added it essentially to my post but you asked for it so i did. i personally have no clue why it's not working, when i use it with a wall instead of a roof on the set value for roof part the simulation has no errors yet no change to the energy usage but when i use it with a roof i get an error right away

shahin1992 gravatar image shahin1992  ( 2016-11-08 04:54:42 -0500 )edit

Your Answer

Please start posting anonymously - your entry will be published after you log in or create a new account.

Add Answer

 

Question Tools

1 follower

Stats

Asked: 2016-11-03 07:15:01 -0500

Seen: 103 times

Last updated: Nov 08 '16