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Lisa,<br>
The best way to go about solving this problem is to step one line
at a time through the code while your simulation is running from the
debugging/compiling environment. In order to do this, of course, you
need to have a Fortran compiler. If you have access to the Intel
Visual Fortran (IVF) compiler then you can load the IVF project that
is included in the ..\Trnsys17\Compilers\IVF11x\ directory, add the
STEC Library components to the project and begin the debugging
process that way. Put breakpoints into the air receiver component
code. Once you hit a breakpoint you can then step one line at a time
and look at intermediate values until you hit the line in question.<br>
Kind regards,<br>
David<br>
<br>
<br>
<div class="moz-cite-prefix">On 8/7/2014 04:22, Lisa Hagg wrote:<br>
</div>
<blockquote cite="mid:1407403358145.71199@lneg.pt" type="cite">
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<p>Hi, <br>
</p>
<p>I'm currently doing my master thesis with the help of TRNSYS,
but there seems to be an issue which I can't overcome.<br>
</p>
<p>The issue is within the air receiver in the STEC library. As
soon as the air flow is set to a value of 8040 and below a
fortran error occurs. The error code is 696: real zero raised to
negative power. However I have looked in the source code of the
type (422) and I can't find a negative power anywhere, so I
don't understand how 0 can be raised to a negative power in the
type, when there seems to be no negative power in the code at
all. <br>
</p>
<p>I have isolated each type used in my code, and all signs point
towards the air receiver being the issue, since the other types
work by there own when the air flow is set below 8140. <br>
</p>
<p>I have also seen quite a few papers that use a heat exchanger
as the tower, but still have the air receiver. Is this necessary
and something I should do as well? Because I thought that the
air receiver was the tower, but that might not be the case. <br>
</p>
<p>All kind of help is very appreciated!<br>
</p>
<p>Kind regards,<br>
</p>
<p>Lisa Hägg<br>
</p>
<p><br>
</p>
<br>
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<pre class="moz-signature" cols="72">--
***************************
David BRADLEY
Principal
Thermal Energy Systems Specialists, LLC
22 North Carroll Street - suite 370
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