Dear all,<br><br>I used Type 9e with an external weather txt file (please see the attached file) using TRNSYS 16, it appeared an error as follows:<br><br>*** Fatal Error at time : 3816.000000<br> Generated by Unit : 17<br>
Generated by Type : 9<br> Message : Unable to correctly read from the supplied data file. Please check the file and re-run the simulation. The most likely cause of this problem is an empty or non-existent file.<br>
<br>But this file is not empty or non-existent file. <br>Is its form of txt file not right or proper for TRNSYS-reading?<br><br>Many thanks in advance!<br>Br.<br><br>wang<br><br> <br><br><div class="gmail_quote">2012/10/25 <span dir="ltr"><<a href="mailto:trnsys-users-request@cae.wisc.edu" target="_blank">trnsys-users-request@cae.wisc.edu</a>></span><br>
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1. FW: TYPE 56, Active layer minflow error (Patrick Fabriek)<br>
<br><br>---------- ÒÑת·¢Óʼþ ----------<br>From: Patrick Fabriek <<a href="mailto:P.H.Fabriek@tudelft.nl">P.H.Fabriek@tudelft.nl</a>><br>To: "'<a href="mailto:d.bradley@tess-inc.com">d.bradley@tess-inc.com</a>'" <<a href="mailto:d.bradley@tess-inc.com">d.bradley@tess-inc.com</a>><br>
Cc: "'<a href="mailto:trnsys-users@cae.wisc.edu">trnsys-users@cae.wisc.edu</a>'" <<a href="mailto:trnsys-users@cae.wisc.edu">trnsys-users@cae.wisc.edu</a>><br>Date: Thu, 25 Oct 2012 07:31:20 +0000<br>
Subject: [TRNSYS-users] FW: TYPE 56, Active layer minflow error<br>
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<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1f497d"><u></u> <u></u></span></p>
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<p><span style="font-size:10.0pt;font-family:"Tahoma","sans-serif"">David,<u></u><u></u></span></p>
<p><span style="font-size:10.0pt;font-family:"Tahoma","sans-serif""> <u></u><u></u></span></p>
<p><span style="font-size:10.0pt;font-family:"Tahoma","sans-serif"">Thank you for the fast responds, i will send you the total map file. The project its not yet complicated, im trying to add additional subsystems to the house, so the model will
become more realistic.<u></u><u></u></span></p>
<p><span style="font-size:10.0pt;font-family:"Tahoma","sans-serif""> <u></u><u></u></span></p>
<p><span style="font-size:10.0pt;font-family:"Tahoma","sans-serif"">Im adding a floor heating but i dont have any details about the floor heating (yet). So im trying to make a default floor heating active layer, so that i can later on adjust it
with the details of the house.<u></u><u></u></span></p>
<p><span style="font-size:10.0pt;font-family:"Tahoma","sans-serif""> <u></u><u></u></span></p>
<p><span style="font-size:10.0pt;font-family:"Tahoma","sans-serif"">Another question: the exterior walls have a specified R value, does it matter if i model the exterior walls with multiple layer with combined is that R value or can i just implement
1 layer with the same specified R value?<u></u><u></u></span></p>
<p><span style="font-size:10.0pt;font-family:"Tahoma","sans-serif"">As the walls a modeled with the response theory it does not really matter what u stick in between the frontside and backside aslong as the R is the same correct?<u></u><u></u></span></p>
<p><span style="font-size:10.0pt;font-family:"Tahoma","sans-serif""> <u></u><u></u></span></p>
<p><span style="font-size:10.0pt;font-family:"Tahoma","sans-serif""> <u></u><u></u></span></p>
<p><span style="font-size:10.0pt;font-family:"Tahoma","sans-serif"">Kind regards,<u></u><u></u></span></p>
<p><span style="font-size:10.0pt;font-family:"Tahoma","sans-serif""> <u></u><u></u></span></p>
<p><span style="font-size:10.0pt;font-family:"Tahoma","sans-serif"">Patrick<u></u><u></u></span></p>
<p><span style="font-size:10.0pt;font-family:"Tahoma","sans-serif""> <u></u><u></u></span></p>
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<p class="MsoNormal" style="margin-bottom:12.0pt"><b><span style="font-size:10.0pt;font-family:"Tahoma","sans-serif"" lang="EN-GB">From:</span></b><span style="font-size:10.0pt;font-family:"Tahoma","sans-serif"" lang="EN-GB"> David BRADLEY
[<a href="mailto:d.bradley@tess-inc.com" target="_blank">d.bradley@tess-inc.com</a>]<br>
<b>Sent:</b> Thursday, October 18, 2012 4:05 PM<br>
<b>To:</b> Patrick Fabriek<br>
<b>Cc:</b> </span><span style="font-size:10.0pt;font-family:"Tahoma","sans-serif""><a href="mailto:trnsys-users@cae.wisc.edu" target="_blank"><span lang="EN-GB">trnsys-users@cae.wisc.edu</span></a></span><span style="font-size:10.0pt;font-family:"Tahoma","sans-serif"" lang="EN-GB"><br>
<b>Subject:</b> Re: [TRNSYS-users] TYPE 56, Active layer minflow error</span><span style lang="EN-GB"><u></u><u></u></span></p>
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<p class="MsoNormal" style="margin-bottom:12.0pt"><span style>Patrick,<br>
This is a known bug and one that we are working on solving. The problem appears to come from a dynamic calculation of the transition between laminar and turbulent flow which (to my understanding) includes a correction for the actual water temperature when
performed during a simulation in Type56 but for an assumed water temperature when performed in TRNBuild. I have found that if you increase the mass flow rate by a bit then you get away from the problem. It sounds, however, as though this hasn't worked in your
case. If the project is not too complicated, please send it and we can have a closer look internally.<br>
Kind regards,<br>
David<br>
<br>
<u></u><u></u></span></p>
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<p class="MsoNormal"><span style>On 10/18/2012 05:57, Patrick Fabriek wrote:<u></u><u></u></span></p>
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<p><span style="font-size:10.0pt;font-family:"Tahoma","sans-serif"">Dear Trnsys users,<u></u><u></u></span></p>
<p><span style="font-size:10.0pt;font-family:"Tahoma","sans-serif""> <u></u><u></u></span></p>
<p><span style="font-size:10.0pt;font-family:"Tahoma","sans-serif"">I have been using Trnsys for a months now and trying to model a simple single floor Zero energy house recently build in Rotterdam.<u></u><u></u></span></p>
<p><span style="font-size:10.0pt;font-family:"Tahoma","sans-serif""> <u></u><u></u></span></p>
<p><span style="font-size:10.0pt;font-family:"Tahoma","sans-serif"">Im now at the point where i am defining the floor heating with active layer in TRNBuild but i get this error : Specific fluid mass flow of active layer in surface 1 below minimum
value of 12,98 kg/m2h. <u></u><u></u></span></p>
<p><span style="font-size:10.0pt;font-family:"Tahoma","sans-serif"">The minimum allowed inlet specific mass flowrate is valued at 16.68 kg/ h m2 so this error is very strange. I put the desired specific flow rate at 17.<u></u><u></u></span></p>
<p><span style="font-size:10.0pt;font-family:"Tahoma","sans-serif""> <u></u><u></u></span></p>
<p><span style="font-size:10.0pt;font-family:"Tahoma","sans-serif"">I have been increasing the massflow or lowering it still give the error.<u></u><u></u></span></p>
<p><span style="font-size:10.0pt;font-family:"Tahoma","sans-serif"">Does trnsys studio recalculate specific value somewhere else? anyone has a another solution for implementing floor heating.<u></u><u></u></span></p>
<p><span style="font-size:10.0pt;font-family:"Tahoma","sans-serif""> <u></u><u></u></span></p>
<p><span style="font-size:10.0pt;font-family:"Tahoma","sans-serif"">Regards,<u></u><u></u></span></p>
<p><span style="font-size:10.0pt;font-family:"Tahoma","sans-serif""> <u></u><u></u></span></p>
<p><span style="font-size:10.0pt;font-family:"Tahoma","sans-serif"">Patrick F
<u></u><u></u></span></p>
<p><span style="font-size:10.0pt;font-family:"Tahoma","sans-serif""> <u></u><u></u></span></p>
<p><span style="font-size:10.0pt;font-family:"Tahoma","sans-serif""> <u></u><u></u></span></p>
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<u></u><u></u></span></p>
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<u></u><u></u></span></p>
<pre><span style>-- <u></u><u></u></span></pre>
<pre><span style>***************************<u></u><u></u></span></pre>
<pre><span style>David BRADLEY<u></u><u></u></span></pre>
<pre><span style>Principal<u></u><u></u></span></pre>
<pre><span style>Thermal Energy Systems Specialists, LLC<u></u><u></u></span></pre>
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