Paul Graham's profile - activity

Thanks for looking at this David. Any thoughts on a work around? Even deleting all the shades and rebuilding a simple shade over the main window makes no difference. I even tried just building a new space instead of a shade and that didn't work either.

Hi. This is a link to my .osm file. If anyone can advise why the shades do not seem to be working that would be most appreciated. Regards, Paul

Thanks David. File sent via email to OpenStudio@nrel.gov. Regards Paul

Thanks. The reason I put in a trans schedule was that I got an error in eplusout.err saying shading is fully transparent. That error is not there anymore, but still the shades are ineffective. The shades are the correct orientation with no PV. How should I get the file to you? I really appreciate your assistance on this.

Thanks David. I cant see how to report fraction sunlit. The main zone and shade in my model only has East glass and I reported "zone windows total trans'd solar radiation". This indicates no shading in the model (solar indicates sun on windows from sunrise to noon but hand calc shows no sun on windows after 10am), also energy is same if shades are in the model or deleted. I tried various transmitance schedules; using on(1)/off(0) trans schedule (for example) there is a tiny difference - this indicates to me that it is likely transmittance is the problem. However, I cant find how to fix this.

Thanks. Shades are purple on building and blue in group. These are simple fixed permanent shading overhangs. I think I have the basics correct from the tutorials etc; so am after more detailed tutorials etc on shading setup. I thought just placing the shades in shading groups in Sketchup would work, but they have no effect. I believe the problem is my setup in OS rather than Sketchup (perhaps scheduling or transmittance). I read the error file prior to my first post and it said shades were always transparent so I amended models and no such error now but still no effect. Regards, Paul

Hi.

I am looking for a tutorial/info/posts on fixed site/building/space shading. This is a very basic question because this is my first OS model and so far I am not able to get the shades in my model to work (i.e. some shades are applied to the building and some are applied to spaces but none have any impact (deleting the shades has the same result).

I suspect the problem is something to do with schedules or transmittance settings (which I am still learning about also) but I haven't yet found guidance.

Thanks, Paul