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Marcus,<br>
Make sure that you are using a short timestep (1-5 minutes) and
that there is enough thermal capacitance in your flow loops. It may
be that 10000 kg/h of air flowing through the device in the course
of one time step is causing the system to be unstable. There was a
recent post on this forum concerning a cooling tower connected to an
absorption chiller that turned out to be exactly the same problem;
far too much energy transferred in a system with far too little
capacitance for the time step selected. The time step has to be
shorter than the time constant of your system.<br>
Kind regards,<br>
David<br>
<br>
<br>
<div class="moz-cite-prefix">On 9/15/2013 08:36, Marcus wrote:<br>
</div>
<blockquote
cite="mid:CAEzj1z4i778gOcb54Gq3vngejP=qDd0Fd-r3TACRX01m5cGQiA@mail.gmail.com"
type="cite">
<div dir="ltr">
<div>I am running type 1716. When I run with 1000 kg/hr flow, it
simulates fine. When I increase to 10000, it causes
psychometric SAT error at -273K. <br>
<br>
</div>
So far, I will use the wheel at 1/10 the flow, and then multiply
after the wheel to get back to our design flow, just wondering
if this is a known bug or I suppose the model isn't valid at
such a flow rate? <br>
<br>
Cheers,<br>
Marcus<br>
</div>
<br>
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