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<p class="MsoNormal">Hi Jeff<o:p></o:p></p>
<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal">Thanks for the email<o:p></o:p></p>
<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal">I am using TRNSYS 18<o:p></o:p></p>
<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal">If you want to replicate the issue, simply useType58 and put P=10000kPa and h=940 kJ/kg and you will get both issues: 1- super slow simulation 2- odd steam quality value of -1.5e38<o:p></o:p></p>
<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal">Thanks<o:p></o:p></p>
<p class="MsoNormal"><o:p> </o:p></p>
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<p class="MsoNormal"><b><span lang="EN-US" style="font-size:10.0pt;font-family:"Arial",sans-serif;color:black;mso-fareast-language:EN-AU">Best Regards,<o:p></o:p></span></b></p>
<p class="MsoNormal"><b><span lang="EN-US" style="font-size:10.0pt;font-family:"Arial",sans-serif;color:black;mso-fareast-language:EN-AU"><o:p> </o:p></span></b></p>
<p class="MsoNormal"><b><span lang="EN-US" style="font-size:10.0pt;font-family:"Arial",sans-serif;color:black;mso-fareast-language:EN-AU">Amir Nashed, PhD</span></b><b><span lang="EN-US" style="font-size:10.0pt;font-family:"Arial",sans-serif;mso-fareast-language:EN-AU"><o:p></o:p></span></b></p>
<p class="MsoNormal"><span lang="EN-US" style="font-size:10.0pt;font-family:"Arial",sans-serif;color:black;mso-fareast-language:EN-AU">Energy Engineer</span><span lang="EN-US" style="font-size:10.0pt;font-family:"Arial",sans-serif;mso-fareast-language:EN-AU"><o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-US" style="font-size:10.0pt;font-family:"Arial",sans-serif;color:black;mso-fareast-language:EN-AU">Estate Management</span><span lang="EN-US" style="font-size:10.0pt;font-family:"Arial",sans-serif;mso-fareast-language:EN-AU"><o:p></o:p></span></p>
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<p class="MsoNormal"><span lang="EN-US" style="font-size:10.0pt;font-family:"Arial",sans-serif;color:black;mso-fareast-language:EN-AU">UNSW SYDNEY NSW 2052 AUSTRALIA</span><span lang="EN-US" style="font-size:10.0pt;font-family:"Arial",sans-serif;mso-fareast-language:EN-AU"><o:p></o:p></span></p>
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<p class="MsoNormal"><b><span lang="EN-US" style="mso-fareast-language:EN-AU">From:</span></b><span lang="EN-US" style="mso-fareast-language:EN-AU"> Jeff Thornton <thornton@tess-inc.com>
<br>
<b>Sent:</b> Wednesday, 14 August 2019 1:25 AM<br>
<b>To:</b> TRNSYS users mailing list at OneBuilding.org <trnsys-users@lists.onebuilding.org><br>
<b>Cc:</b> Amir Nashed <a.nashed@unsw.edu.au><br>
<b>Subject:</b> Re: [TRNSYS-users] Slow model at boiler pressure of 10000kPa<o:p></o:p></span></p>
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<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal">Amir,<span style="mso-fareast-language:EN-AU"><o:p></o:p></span></p>
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<p class="MsoNormal"><o:p> </o:p></p>
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<p class="MsoNormal">Which version of TRNSYS are you using? I know we identified and fixed an issue within the steam properties subroutine a few months back that might be the cause for your issue.<o:p></o:p></p>
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<p class="MsoNormal"><o:p> </o:p></p>
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<p class="MsoNormal" style="margin-bottom:12.0pt">Jeff - TESS<o:p></o:p></p>
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<p class="MsoNormal">Sent from my iPhone<o:p></o:p></p>
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<p class="MsoNormal" style="margin-bottom:12.0pt"><br>
On Aug 12, 2019, at 6:56 PM, Amir Nashed via TRNSYS-users <<a href="mailto:trnsys-users@lists.onebuilding.org">trnsys-users@lists.onebuilding.org</a>> wrote:<o:p></o:p></p>
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<p class="MsoNormal"><a name="_Hlk492040362">Dear TRNSYS users<o:p></o:p></a></p>
<p class="MsoNormal"><span style="mso-bookmark:_Hlk492040362"> <o:p></o:p></span></p>
<p class="MsoNormal"><span style="mso-bookmark:_Hlk492040362">For some reason all steam components at P=100 Bar (10,000 kPa) go very slow</span><span style="mso-bookmark:_Hlk492040362"><span style="font-size:10.0pt">, whether it is a preheater, condensate pump..etc
</span><o:p></o:p></span></p>
<p class="MsoNormal"><span style="mso-bookmark:_Hlk492040362"><span style="font-size:10.0pt">The issue is not with the model, as I isolated the components, for example simulated type609 by itself and still did not work.</span> . I believe the reason is the
</span><span style="mso-bookmark:_Hlk492040362"><span style="font-size:10.0pt">the Steam_Properties() subroutine as when I tried to use Type58 just by itself at the same steam properties, the same issues occurred. When I reduce the pressure to 9300 kPa, it
works fine.</span><o:p></o:p></span></p>
<p class="MsoNormal"><span style="mso-bookmark:_Hlk492040362"><span style="font-size:10.0pt"> </span><o:p></o:p></span></p>
<p class="MsoNormal"><span style="mso-bookmark:_Hlk492040362"><span style="font-size:10.0pt">Inputs:</span><o:p></o:p></span></p>
<p class="MsoNormal"><span style="mso-bookmark:_Hlk492040362"><image002.jpg><o:p></o:p></span></p>
<p class="MsoNormal"><span style="mso-bookmark:_Hlk492040362"><span style="font-size:10.0pt"> </span><o:p></o:p></span></p>
<p class="MsoNormal"><span style="mso-bookmark:_Hlk492040362"><span style="font-size:10.0pt"> </span><o:p></o:p></span></p>
<p class="MsoNormal"><span style="mso-bookmark:_Hlk492040362"><span style="font-size:10.0pt">Does anyone know how to solve that?</span><o:p></o:p></span></p>
<p class="MsoNormal"><span style="mso-bookmark:_Hlk492040362"><span style="font-size:10.0pt"> </span><o:p></o:p></span></p>
<p class="MsoNormal"><span style="mso-bookmark:_Hlk492040362"><span style="font-size:10.0pt">I can change the pressure, but I believe 100 bars for boiler pressure is pretty standard</span><o:p></o:p></span></p>
<p class="MsoNormal"><span style="mso-bookmark:_Hlk492040362"><span style="font-size:10.0pt"> </span><o:p></o:p></span></p>
<p class="MsoNormal"><span style="mso-bookmark:_Hlk492040362"> <o:p></o:p></span></p>
<p class="MsoNormal"><span style="mso-bookmark:_Hlk492040362"><b><span lang="EN-US" style="font-size:10.0pt;font-family:"Arial",sans-serif;color:black;mso-fareast-language:EN-AU">Best Regards,</span></b><o:p></o:p></span></p>
<p class="MsoNormal"><span style="mso-bookmark:_Hlk492040362"><b><span lang="EN-US" style="font-size:10.0pt;font-family:"Arial",sans-serif;color:black;mso-fareast-language:EN-AU"> </span></b><o:p></o:p></span></p>
<p class="MsoNormal"><span style="mso-bookmark:_Hlk492040362"><b><span lang="EN-US" style="font-size:10.0pt;font-family:"Arial",sans-serif;color:black;mso-fareast-language:EN-AU">Amir Nashed, PhD</span></b><o:p></o:p></span></p>
<p class="MsoNormal"><span style="mso-bookmark:_Hlk492040362"><span lang="EN-US" style="font-size:10.0pt;font-family:"Arial",sans-serif;color:black;mso-fareast-language:EN-AU">Energy Engineer</span><o:p></o:p></span></p>
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<p class="MsoNormal"><span style="mso-bookmark:_Hlk492040362"><span lang="EN-US" style="font-size:10.0pt;font-family:"Arial",sans-serif;mso-fareast-language:EN-AU"> </span><o:p></o:p></span></p>
<p class="MsoNormal"><span style="mso-bookmark:_Hlk492040362"><span lang="EN-US" style="font-size:10.0pt;font-family:"Arial",sans-serif;color:black;mso-fareast-language:EN-AU">UNSW SYDNEY NSW 2052 AUSTRALIA</span><o:p></o:p></span></p>
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<p class="MsoNormal"><span style="mso-bookmark:_Hlk492040362"></span><a href="http://www.unsw.edu.au/"><span style="mso-bookmark:_Hlk492040362"><span lang="EN-US" style="color:black;mso-fareast-language:EN-AU;text-decoration:none"><image001.png></span></span><span style="mso-bookmark:_Hlk492040362"></span></a><span style="mso-bookmark:_Hlk492040362"></span><o:p></o:p></p>
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