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[TRNSYS-users] Problem Ventilation in TRNFLOW



Hi everyone,

I'm still encountering the same problem about ventilation in my project. I've set all the ventilation network, and then I closed all the windows. There is no heating device in the building.
I don't understand why, but at around 749 hours, I encounter this error:


 COMIS MESSAGE  ***** ERROR *****
 Flow matrix is singular ! This might be caused by a zone that has no
 ventilation at all in this condition.
 Age of air and air change efficiency output is invalid !

And this occurs until the end of the simulation, though the simulation runs until the end. I only found that when I opened the .cer file.

Moreover, when I put a heating device in a room, with limited power, the simulation stops before the end, saying that convergence was not reached. Do you think this is related to the COMIS ERROR I showed just before?

If someone can help me, I attach all my project to this mail, with an illustration, in order to better understant what I did. I used TRNSYS17.

Thank you in advance.

King Regards

Wirich

PhD student
Laboratoy of innovative technologies, University of Picardie Jules Vernes
Avenue des Facultés, Salouël

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