<div dir="ltr"><div class="gmail_extra"><div class="gmail_quote"><div>Matt,</div><div><br></div><div>It isn't that I am trying to limit heat transfer to the tank, but that it is not realistic to have a tank of water over the boiling temperature. In tank type 4 or 60 you can set the boiling temperature so that even if heat is added to it as at nears boiling, the component will process the excess heat as being lost as steam. It seems like there would be an easier way to do this than with an external control.</div><div><br></div><div>If not, is there another tank type that simulates boiling, has an internal heat exchanger, and doesn't have any major known issues? Thanks!</div><blockquote class="gmail_quote" style="margin:0px 0px 0px 0.8ex;border-left-width:1px;border-left-color:rgb(204,204,204);border-left-style:solid;padding-left:1ex"><br>---------- Forwarded message ----------<br>From: Matt Duffy <<a href="mailto:mduffy@aeieng.com">mduffy@aeieng.com</a>><br>To: "TRNSYS users mailing list at OneBuilding.org" <<a href="mailto:trnsys-users@lists.onebuilding.org">trnsys-users@lists.onebuilding.org</a>><br>Cc: <br>Date: Mon, 15 Jun 2015 13:57:58 +0000<br>Subject: Re: [TRNSYS-users] Tank Temperature Beyond Boiling<br>
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<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri",sans-serif;color:#1f497d">Brad,<u></u><u></u></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri",sans-serif;color:#1f497d"><u></u> <u></u></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri",sans-serif;color:#1f497d">The TESS Type534 does not have any built-in heating elements or heating energy sources. It can only have the temperature increase if something “upstream” (or
a constant input value for the component), an input, is adding energy to the tank. I suggest you look closely at the components that are adding energy to the tank and perhaps limit that(with some kind of controller) to prevent excessive tank temperatures.
<u></u><u></u></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri",sans-serif;color:#1f497d"><u></u> <u></u></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri",sans-serif;color:#1f497d">Cheers,<u></u><u></u></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri",sans-serif;color:#1f497d"><u></u> <u></u></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri",sans-serif;color:#1f497d">Matt<u></u><u></u></span></p>
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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 class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri",sans-serif;color:#1f497d"><u></u> <u></u></span></p>
<p class="MsoNormal"><b><span style="font-size:11.0pt;font-family:"Calibri",sans-serif">From:</span></b><span style="font-size:11.0pt;font-family:"Calibri",sans-serif"> TRNSYS-users [mailto:<a href="mailto:trnsys-users-bounces@lists.onebuilding.org" target="_blank">trnsys-users-bounces@lists.onebuilding.org</a>]
<b>On Behalf Of </b>Bradley Painting<br>
<b>Sent:</b> Saturday, June 13, 2015 10:13 PM<br>
<b>To:</b> <a href="mailto:trnsys-users@lists.onebuilding.org" target="_blank">trnsys-users@lists.onebuilding.org</a><br>
<b>Subject:</b> [TRNSYS-users] Tank Temperature Beyond Boiling<u></u><u></u></span></p>
<p class="MsoNormal"><u></u> <u></u></p>
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<p class="MsoNormal">Hi,<u></u><u></u></p>
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<p class="MsoNormal">Does anyone know how to limit the fluid temperature of the vertical cylindrical tank 534-coiled (from TESS library)? It is getting up to about 130 °C. I can't find a parameter to limit this. I was using Type 60c but ran into a bug and technical
support suggested I use this model because it has fewer issues.<u></u><u></u></p>
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<p class="MsoNormal">-- <u></u><u></u></p>
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<p style="margin:0in;margin-bottom:.0001pt;background:white"><span style="font-size:10.0pt;font-family:"Arial",sans-serif;color:#073763">Brad Painting</span><span style="font-size:10.0pt"><u></u><u></u></span></p>
<p style="margin:0in;margin-bottom:.0001pt;background:white"><span style="font-size:10.0pt;font-family:"Arial",sans-serif;color:#073763">Master of Science Candidate, Renewable Energy Engineering</span><span style="font-size:10.0pt"><u></u><u></u></span></p>
<p style="margin:0in;margin-bottom:.0001pt;background:white"><span style="font-size:10.0pt;font-family:"Arial",sans-serif;color:#073763">Department of Technology & Environmental Design</span><span style="font-size:10.0pt"><u></u><u></u></span></p>
<p style="margin:0in;margin-bottom:.0001pt;background:white"><span style="font-size:10.0pt;font-family:"Arial",sans-serif;color:#073763">Appalachian State University</span><span style="font-size:10.0pt"><u></u><u></u></span></p>
<p style="margin:0in;margin-bottom:.0001pt;background:white"><span style="font-size:10.0pt;font-family:"Arial",sans-serif;color:#073763">Boone, NC 28608</span><span style="font-size:10.0pt"><u></u><u></u></span></p>
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<br></blockquote></div><br><br clear="all"><div><br></div>-- <br><div class="gmail_signature"><div dir="ltr"><p style="font-size:13px;background-color:rgb(255,255,255);margin:0px"><font color="#073763" face="arial, helvetica, sans-serif">Brad Painting<br></font></p><p style="font-size:13px;background-color:rgb(255,255,255);margin:0px"><font color="#073763" face="arial, helvetica, sans-serif">Master of Science Candidate, Renewable Energy Engineering<br></font></p><p style="font-size:13px;background-color:rgb(255,255,255);margin:0px">
<font color="#073763" face="arial, helvetica, sans-serif">Department of Technology & Environmental Design</font></p><p style="font-size:13px;background-color:rgb(255,255,255);margin:0px"><font color="#073763" face="arial, helvetica, sans-serif">Appalachian State University</font></p>
<p style="font-size:13px;background-color:rgb(255,255,255);margin:0px"><font color="#073763" face="arial, helvetica, sans-serif">Boone, NC 28608</font></p></div></div>
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