Hello everyone,
I am new to OpenStudio and I have just started experimenting with the PAT tool. I have encountered a problem with the measure "Increase R-value of Insulation for Exterior Walls to a Specific Value". Whenever I use values of R greater than 25, I receive a "completed fail" error. The Energy Plus report states that the "material is too thick for CTF calculation" in one case and that the material is "very thin, highly conductive" in the other case, which is not true.
In the initial model, the walls do not have insulation and are made of two rows of bricks, each 9 cm thick covered with lime plaster. When I examined the osm file generated from PAT with R-value equal to R25, I found that in the "constructions" tab, the measure tries to increase the thickness of the brick up to 1.8m to achieve the required R value of 25. So, I thought that if the measure works this way (trying to increase the 2nd construction layer to achieve the required R-value), I could add an insulating material with a thickness of approximately 0cm to the initial model. However, when I did this, the measure did not add any insulation at all, and all the results were the same as the initial model. Also, in both aforementioned cases, I did not get any results under the Reports tab in the Summary table.
Is there a way to fix this problem? Am I missing something?
Thank you very much.
