<html>
<head>
<meta http-equiv="Content-Type" content="text/html; charset=UTF-8">
</head>
<body>
<p>Jim,</p>
<p> Types103 and 560 definitely use different approaches to the
thermal and electrical energy balance but I am wondering if the
issues you are seeing actually have to do with differences in the
incident radiation due to the way that those models treat
incidence angle modifiers. Can you try running a case in which the
solar radiation is normal to the panel and constant? Make sure to
set the IAMs in Type560 to unity as well as the Type103 tau-aplha
product to the same.<br>
</p>
<p>kind regards,</p>
<p> David</p>
<p><br>
</p>
<div class="moz-cite-prefix">On 11/01/2021 11:00, dimitris soukoulis
via TRNSYS-users wrote:<br>
</div>
<blockquote type="cite"
cite="mid:VI1PR08MB3503B4FC3774A12BECD386DBA78A9@VI1PR08MB3503.eurprd08.prod.outlook.com">
<meta http-equiv="Content-Type" content="text/html; charset=UTF-8">
<meta name="Generator" content="Microsoft Word 15 (filtered
medium)">
<style>@font-face
{font-family:"Cambria Math";
panose-1:2 4 5 3 5 4 6 3 2 4;}@font-face
{font-family:Calibri;
panose-1:2 15 5 2 2 2 4 3 2 4;}p.MsoNormal, li.MsoNormal, div.MsoNormal
{margin:0cm;
font-size:11.0pt;
font-family:"Calibri",sans-serif;}a:link, span.MsoHyperlink
{mso-style-priority:99;
color:blue;
text-decoration:underline;}.MsoChpDefault
{mso-style-type:export-only;}div.WordSection1
{page:WordSection1;}</style>
<div class="WordSection1">
<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal"><span lang="EN-US">Hello! I am sending my
question again with the hope that someone will reply. Thanks
!</span><o:p></o:p></p>
<div
style="mso-element:para-border-div;border:none;border-top:solid
#E1E1E1 1.0pt;padding:3.0pt 0cm 0cm 0cm">
<p class="MsoNormal" style="border:none;padding:0cm"><b>Από: </b><a
href="mailto:saintdimi@hotmail.com" moz-do-not-send="true">dimitris
soukoulis</a><br>
<b>Αποστολή: </b>Τρίτη, 26 Οκτωβρίου 2021 2:16 μμ<br>
<b>Προς: </b><a
href="mailto:trnsys-users@lists.onebuilding.org"
moz-do-not-send="true" class="moz-txt-link-freetext">trnsys-users@lists.onebuilding.org</a><br>
<b>Θέμα: </b>Comparing the type560 PV-T with the type103b
PV </p>
</div>
<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal"><span lang="EN-US">Dear All,<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-US">I am currently trying to
compare the difference between a simple PV panel ( type103)
and a PVT collector (type560) but I am not getting the
expected results, because the output of the PVT is less than
that of the PV which doesn’t make sense. My calculations are
the following : I calculated the type103 efficiency by
multiplying the module’s current (Parameter 7) with the
voltage(Parameter 6) at the MPP for reference conditions and
divided it by the product of the insolation at reference
conditions (P 5) and the module’s area (P 12). That
efficiency I entered to the Parameter 18 of type560. I also
made the areas of the two components equal ( 71,2 m2 in my
case ) and changed the tubes number to 712 so it would have
the same ratio as the default setting which is 10 tubes/m2.
By doing so I expexted to have a higher electrical yield
from the PVT but that was not the case. Did I do something
wrong with my calculations ?
<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-US">I am attaching the
project’s files. <o:p>
</o:p></span></p>
<p class="MsoNormal"><span lang="EN-US">Thanks a lot,<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-US">Jim Soukoulis.</span><o:p></o:p></p>
<p class="MsoNormal"><o:p> </o:p></p>
</div>
<br>
<fieldset class="mimeAttachmentHeader"></fieldset>
<pre class="moz-quote-pre" wrap="">_______________________________________________
TRNSYS-users mailing list
<a class="moz-txt-link-abbreviated" href="mailto:TRNSYS-users@lists.onebuilding.org">TRNSYS-users@lists.onebuilding.org</a>
<a class="moz-txt-link-freetext" href="http://lists.onebuilding.org/listinfo.cgi/trnsys-users-onebuilding.org">http://lists.onebuilding.org/listinfo.cgi/trnsys-users-onebuilding.org</a>
</pre>
</blockquote>
<pre class="moz-signature" cols="72">--
***************************
David BRADLEY
Principal
Thermal Energy Systems Specialists, LLC
3 North Pinckney Street - suite 202
Madison, WI 53703 USA
P:+1.608.274.2577
<a class="moz-txt-link-abbreviated" href="mailto:d.bradley@tess-inc.com">d.bradley@tess-inc.com</a>
<a class="moz-txt-link-freetext" href="http://www.tess-inc.com">http://www.tess-inc.com</a>
<a class="moz-txt-link-freetext" href="http://www.trnsys.com">http://www.trnsys.com</a></pre>
</body>
</html>