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Mattheiu,<br>
I have not run into that error but I would guess that it means
that the air flow from zone A to zone B was calculated as a negative
number. Airflow from zone A to zone B must always be positive. If the air
flow turns around and flows the other direction then you need to define a
coupling air flow rate from zone B to zone A. The reason for this is that
by defining only positive air flows (perhaps in both directions) you can
define a mixing flow, not just a net flow between the two zones.<br>
Cheers, <br>
David<br><br>
<br>
At 09:52 6/20/2007, Matthieu Cosnier wrote:<br>
<blockquote type=cite class=cite cite="">Dear TRNSYS users<br>
Does anybody know what the error message "negative coupling
value" mean? <br>
It seems to be due to type 56. <br>
My simulation program works usualy but not for a particular ventilation
air flow rate.<br>
Thanks for your answers<br><br>
COSNIER Matthieu <br><br>
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