Dear Lukasz, As the error says, is your building geometry not closed or not convex (Manual 5-Multizone, 5.2.7.12. Zone Radiation Modes). This problem can’t be caused by your virtual surfaces. Please make sure that your building is convex and closed! Best, Christoph Von: TRNSYS-users [mailto:trnsys-users-bounces@lists.onebuilding.org]
Im Auftrag von Lukasz Watly via TRNSYS-users Dear All, I have desgined in SketchUP a single thermal zone with 3 airnodes placed on different heights (10,
60, 110 cm). I used a Virtual Surface option to model the surfaces which, after exporting them to TRNBuild, could dissapear.
In my simulation of the zone, I would like to obtain three values of Tairnode, Toperative and mean radiant temperature for each airnode. Unfortunately, when I perform simulation in TRNSYS, all three values of mean radiant
temperatures are the same. This I did with the radiation model set to standard. When I am trying to use the detailed radiation model, I got two error informations: - ==== zone GROUND_FLOOR_10... ... ERROR in summing view factors of surface 4. Please check geometry!!!. - Error while creating VFM file. This causes the situation that I am unable to open the .vfm file in TRNSYS and cannot get the mean radiant temperature values. I assume that the problem is caused by the fact that my model might not be a closed volume, due to the virtual surfaces I have created in SketchUP. So my question is, is there another way to get the MRT values for each
airnodes separetely? The view factor of surface 4 is set to 0.5 automatically, as it is one of the vertical walls. Thank you in advance for your help. Kind regards, Lukasz Watly |