When I try to run the large office building with a different TMY3 weather file I get a convergence limit error. Has anyone seen this issue before? Any ideas on troubleshooting? Thanks.
This one might be obvious, but if you are allowing the systems to Autosize, make sure you change the Design Day objects to match the new weather file location, otherwise you'll end up sizing the equipment for one set of conditions and then operating under different conditions.
Good point. This was not immediately apparent to my team and I when we were first learning about these reference models and the E+ .idf file structure.
Hi -
Was it previously feasible just to directly open the DOE Commercial Reference Buildings from the 'templates' that used to ship with OpenStudio? Juxtaposing page 3 of the OpenStudio Basic Workflow Guide with the fact that others seem to have those models (https://unmethours.com/question/1305/...), it seems maybe so. However, it also seems that with the move from templates to the wizard for starting new .osm files in sketchup, the ability to open the commercial reference building models (if it existed) no longer exists. Am I wrong?
Given I don't have an .osm file, I'm trying to load the DOE commercial reference buildings in OpenStudio by importing the idf's from the DOE website. I was able to import the most recent (V 1.4_7.2) Large Office models using the OpenStudio Sketchup Plugin (Sketchup 14.1) and from there export to OpenStudio (using version 1.5 - i got errors using 1.4). For the large office building, there were about 4300 lines of code from the idf that were not imported via the plugin, instead being sent to an "untitled-untranslated.idf" file. I should also mention here that I had no luck directly importing the idf into OpenStudio.
i'm new to OpenStudio, but what mostly appears to be missing in the model is the mechanical systems, which seems pretty consistent with what's in the "untitled'-untranslated.idf" file. I'm not the first person to do this , so I'm basically wondering:
If there are not already OpenStudio versions of these models publicly available, does anyone have suggestions or a checklist for what needs to be done to build out the reference buildings, starting from the .osm files that can be created from the .idf files downloadable from DOE?
@Wero - welcome, you might be able to just delete this and paste as a comment to original question instead.
I ran into this with a few files if I remember correctly. It is easily fixed by adjusting the "!- Maximum Number of Warmup Days" under the "Building" Object," (should be line 81 of the .idf file) to a higher value. Try 30, review the error file and if you are still having issues try something like 100 or 1000. If you look at the error file, you will probably find out that the convergence limit error is for a space that is not directly conditioned, such as a closet, or bathroom. In my experience, this has not seemed to have a noticeable effect on the results output.
Asked: 2014-10-16 12:27:13 -0600
Seen: 364 times
Last updated: Dec 08 '14
