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Hello,
I'm currently working with the types 67 or 64 "Shading mask on opening and horizontal" and 34 "Overhang and windwall shading". At first, I was wondering why the fraction of solar shading outputted by type 34 took negative values even tough the output description said the fraction could only take a value in the interval [0;1].
As the documentation says, I put the "upstream component mode" to 1 because I'm inputting from type 67/64. However it seems that type 34 gives you the right results when you choose the mode 0, I get positive values for the fraction of solar shading.
In my configuration, is it correct to take mode 0 ? If yes, can you explain why ?
Second question, when inputting from type 15-6 (Meteonorm) to type 67-64, should I take into account ground and sky diffuse radiation or just the sky radiation ?
Thanks in advance for your answers.
Hello,
I think your interpretation of how to set the "upstream component mode" in Type 34 is correct. Getting negative values for the fraction of solar shading sure sounds like there is a bug in Type 34.
I would send your project (.tpf) and any files needed to run your project to your TRNSYS distributor for assistance. It will help immensely to send as simple a version of your project as possible that still replicates the error. Your distributor has tools they can use to step through the code and find the issue.
DavidBradley 23/10/2023 4:03 pm
@a_weiss and @charles_bo
just to close the loop on this, there is a bug in v18.05.0001. It will be fixed in the next release.
