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Richard,<br>
It is important to clarify that the data file for Type927 required
at least two <i>values </i>of source and load flow rates in order
for the TRNSYS kernel routine that reads the data file to
interpolate correctly. A modification has been made to TRNSYS 17.1
that allows users to specify only one value for any of the
"independent variables" if they so choose.<br>
<br>
The easiest thing to do in Trnsys17.0.x and earlier is simply to
copy the data for the flow rates that you do have and paste it for
another (arbitrary) flow rate. Essentially this just indicates in
the data file that there is no performance dependence on a changing
flow rate. Probably not a great assumption but at least the
simulation would run. <br>
<br>
Kind regards,<br>
David<br>
<br>
On 4/10/2012 04:12, Richard Thygesen wrote:
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<p class="MsoNormal"><span lang="EN-US">Hi.<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-US">Is it necessary to
specify three load and source flows in the external file of
type 927? Because it seems like it should be possible to
only have two but when I try to simulate I get two errors <o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-US"><o:p> </o:p></span></p>
<p class="MsoNormal"><i><span lang="EN-US">“The referenced Unit
has a bad parameter value.<o:p></o:p></span></i></p>
<p class="MsoNormal"><i><span lang="EN-US">Reported information
: Parameter # 11, Reported Problem: There must be at least
two source flow rates.” <o:p></o:p></span></i></p>
<p class="MsoNormal"><i><span lang="EN-US"><o:p> </o:p></span></i></p>
<p class="MsoNormal"><i><span lang="EN-US">“The referenced Unit
has a bad parameter value.<o:p></o:p></span></i></p>
<p class="MsoNormal"><i><span lang="EN-US">Reported information
: Parameter # 12, Reported Problem: There must be at least
two load flow rates.”<o:p></o:p></span></i></p>
<p class="MsoNormal"><span lang="EN-US"><o:p> </o:p></span></p>
<p class="MsoNormal"><span lang="EN-US">The problem is that I
have specified two load and source flows.<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-US">Has anyone encountered
this problem?<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-US"><o:p> </o:p></span></p>
<p class="MsoNormal"><span lang="EN-US">Best regards<o:p></o:p></span></p>
<p class="MsoNormal"><b><span
style="font-size:9.0pt;font-family:"Arial","sans-serif";mso-fareast-language:SV">Richard
Thygesen<o:p></o:p></span></b></p>
<p class="MsoNormal"><o:p> </o:p></p>
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<pre class="moz-signature" cols="72">--
***************************
David BRADLEY
Principal
Thermal Energy Systems Specialists, LLC
22 North Carroll Street - suite 370
Madison, WI 53703 USA
P:+1.608.274.2577
F:+1.608.278.1475
<a class="moz-txt-link-abbreviated" href="mailto:d.bradley@tess-inc.com">d.bradley@tess-inc.com</a>
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