<META HTTP-EQUIV="Content-Type" CONTENT="text/html; charset=iso-8859-1">
<html xmlns:v="urn:schemas-microsoft-com:vml" xmlns:o="urn:schemas-microsoft-com:office:office" xmlns:w="urn:schemas-microsoft-com:office:word" xmlns:m="http://schemas.microsoft.com/office/2004/12/omml" xmlns="http://www.w3.org/TR/REC-html40"><head><meta name=Generator content="Microsoft Word 14 (filtered medium)"><style><!--
/* Font Definitions */
@font-face
{font-family:Calibri;
panose-1:2 15 5 2 2 2 4 3 2 4;}
@font-face
{font-family:Tahoma;
panose-1:2 11 6 4 3 5 4 4 2 4;}
/* Style Definitions */
p.MsoNormal, li.MsoNormal, div.MsoNormal
{margin:0cm;
margin-bottom:.0001pt;
font-size:12.0pt;
font-family:"Times New Roman","serif";}
a:link, span.MsoHyperlink
{mso-style-priority:99;
color:blue;
text-decoration:underline;}
a:visited, span.MsoHyperlinkFollowed
{mso-style-priority:99;
color:purple;
text-decoration:underline;}
span.E-MailFormatvorlage17
{mso-style-type:personal-reply;
font-family:"Calibri","sans-serif";
color:#1F497D;}
.MsoChpDefault
{mso-style-type:export-only;
font-family:"Calibri","sans-serif";
mso-fareast-language:EN-US;}
@page WordSection1
{size:612.0pt 792.0pt;
margin:70.85pt 70.85pt 2.0cm 70.85pt;}
div.WordSection1
{page:WordSection1;}
--></style><!--[if gte mso 9]><xml>
<o:shapedefaults v:ext="edit" spidmax="1026" />
</xml><![endif]--><!--[if gte mso 9]><xml>
<o:shapelayout v:ext="edit">
<o:idmap v:ext="edit" data="1" />
</o:shapelayout></xml><![endif]--></head><body lang=DE link=blue vlink=purple><div class=WordSection1><p class=MsoNormal><span lang=EN-US style='font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D'>Dear Mr. Rohan!<o:p></o:p></span></p><p class=MsoNormal><span lang=EN-US style='font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D'><o:p> </o:p></span></p><p class=MsoNormal><span lang=EN-US style='font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D'>In the 13 kg/m²h the “m²” are related to the wall/ceiling area and not to the pipe-diameter.<o:p></o:p></span></p><p class=MsoNormal><span lang=EN-US style='font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D'>For the conversion to kg/s You may not use the pipe-area (7.1e-5 m²) but Your wall area.<o:p></o:p></span></p><p class=MsoNormal><span lang=EN-US style='font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D'><o:p> </o:p></span></p><p class=MsoNormal><span lang=EN-US style='font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D'>With kind regards,<o:p></o:p></span></p><p class=MsoNormal><span lang=EN-US style='font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D'> Matthias Kersken<o:p></o:p></span></p><p class=MsoNormal><span lang=EN-US style='font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D'><o:p> </o:p></span></p><p class=MsoNormal><span style='font-size:10.0pt;font-family:"Arial","sans-serif";color:#1F497D'>---</span><span style='color:#1F497D'><o:p></o:p></span></p><p class=MsoNormal><span style='color:#1F497D'> <o:p></o:p></span></p><table class=MsoNormalTable border=0 cellpadding=0 align=left><tr><td width=117 valign=top style='width:87.75pt;padding:.75pt .75pt .75pt .75pt'><table class=MsoNormalTable border=1 cellspacing=0 cellpadding=0 align=left width=350 style='width:262.5pt;background:silver;border-collapse:collapse;border:none;margin-left:4.8pt;margin-right:4.8pt'><tr><td style='border:solid windowtext 1.0pt;background:white;padding:3.0pt 3.0pt 3.0pt 3.0pt'><p class=MsoNormal style='margin-bottom:4.5pt;mso-element:frame;mso-element-frame-hspace:2.25pt;mso-element-wrap:around;mso-element-anchor-vertical:paragraph;mso-element-anchor-horizontal:column;mso-element-left:-9.0pt;mso-height-rule:exactly'><b><span style='font-size:10.0pt;font-family:"Arial","sans-serif";color:#1F497D'>Dipl.-Ing. Matthias Kersken<br></span></b><span style='font-size:10.0pt;font-family:"Arial","sans-serif";color:#1F497D'>Wissenschaftlicher Mitarbeiter / Abteilung Energiesysteme<o:p></o:p></span></p><p class=MsoNormal style='margin-top:9.0pt;mso-element:frame;mso-element-frame-hspace:2.25pt;mso-element-wrap:around;mso-element-anchor-vertical:paragraph;mso-element-anchor-horizontal:column;mso-element-left:-9.0pt;mso-height-rule:exactly'><span style='font-size:10.0pt;font-family:"Arial","sans-serif";color:#1F497D'>Fraunhofer-Institut für Bauphysik <br>Institutsteil Holzkirchen</span><span style='color:#1F497D'><o:p></o:p></span></p><p class=MsoNormal style='mso-element:frame;mso-element-frame-hspace:2.25pt;mso-element-wrap:around;mso-element-anchor-vertical:paragraph;mso-element-anchor-horizontal:column;mso-element-left:-9.0pt;mso-height-rule:exactly'><span style='font-size:10.0pt;font-family:"Arial","sans-serif";color:#1F497D'>Fraunhoferstraße 10<br>83626 Valley</span><span style='color:#1F497D'><o:p></o:p></span></p><p class=MsoNormal style='mso-margin-top-alt:4.5pt;margin-right:0cm;margin-bottom:4.5pt;margin-left:0cm;mso-element:frame;mso-element-frame-hspace:2.25pt;mso-element-wrap:around;mso-element-anchor-vertical:paragraph;mso-element-anchor-horizontal:column;mso-element-left:-9.0pt;mso-height-rule:exactly'><span style='font-size:10.0pt;font-family:"Arial","sans-serif";color:#1F497D'>eMail: <a href="mailto:Matthias.Kersken@ibp.fraunhofer.de">Matthias.Kersken@ibp.fraunhofer.de</a><br>Telefon 08024 / 643-204<br>Telefax 08024 / 643-366<br><a href="http://www.ibp.fraunhofer.de">www.ibp.fraunhofer.de</a></span><span style='color:#1F497D'><o:p></o:p></span></p></td></tr></table></td><td width=189 valign=top style='width:5.0cm;padding:.75pt .75pt .75pt .75pt'><table class=MsoNormalTable border=1 cellspacing=0 cellpadding=0 align=left width=308 style='width:231.0pt;background:silver;border-collapse:collapse;margin-left:4.8pt;margin-right:4.8pt'><tr><td valign=top style='background:white;padding:3.0pt 3.0pt 3.0pt 3.0pt'><p class=MsoNormal style='margin-bottom:4.5pt;mso-element:frame;mso-element-frame-hspace:2.25pt;mso-element-wrap:around;mso-element-anchor-vertical:paragraph;mso-element-anchor-horizontal:column;mso-element-left:-9.0pt;mso-height-rule:exactly'><b><span lang=EN-GB style='font-size:10.0pt;font-family:"Arial","sans-serif";color:#1F497D'>Dipl.-Ing. Matthias Kersken<br></span></b><span lang=EN-GB style='font-size:10.0pt;font-family:"Arial","sans-serif";color:#1F497D'>Research Associate / Department Energy Systems </span><span lang=EN-GB style='color:#1F497D'><o:p></o:p></span></p><p class=MsoNormal style='margin-top:9.0pt;mso-element:frame;mso-element-frame-hspace:2.25pt;mso-element-wrap:around;mso-element-anchor-vertical:paragraph;mso-element-anchor-horizontal:column;mso-element-left:-9.0pt;mso-height-rule:exactly'><span lang=EN-GB style='font-size:10.0pt;font-family:"Arial","sans-serif";color:#1F497D'>Fraunhofer Institute for Building Physics <br>Branch Holzkirchen</span><span lang=EN-GB style='color:#1F497D'><o:p></o:p></span></p><p class=MsoNormal style='mso-element:frame;mso-element-frame-hspace:2.25pt;mso-element-wrap:around;mso-element-anchor-vertical:paragraph;mso-element-anchor-horizontal:column;mso-element-left:-9.0pt;mso-height-rule:exactly'><span lang=EN-GB style='font-size:10.0pt;font-family:"Arial","sans-serif";color:#1F497D'>Fraunhoferstraße 10<br>D-83626 Valley</span><span lang=EN-GB style='color:#1F497D'><o:p></o:p></span></p><p class=MsoNormal style='mso-margin-top-alt:4.5pt;margin-right:0cm;margin-bottom:4.5pt;margin-left:0cm;mso-element:frame;mso-element-frame-hspace:2.25pt;mso-element-wrap:around;mso-element-anchor-vertical:paragraph;mso-element-anchor-horizontal:column;mso-element-left:-9.0pt;mso-height-rule:exactly'><span lang=EN-GB style='font-size:10.0pt;font-family:"Arial","sans-serif";color:#1F497D'>eMail: </span><span style='font-size:10.0pt;font-family:"Arial","sans-serif";color:#1F497D'><a href="mailto:Matthias.Kersken@ibp.fraunhofer.de"><span lang=EN-GB>Matthias.Kersken@ibp.fraunhofer.de</span></a></span><span lang=EN-GB style='font-size:10.0pt;font-family:"Arial","sans-serif";color:#1F497D'><br>Phone +49 8024 / 643-204<br>Fax +49 8024 / 643-366<br></span><span style='font-size:10.0pt;font-family:"Arial","sans-serif";color:#1F497D'><a href="http://www.ibp.fraunhofer.de"><span lang=EN-GB>www.ibp.fraunhofer.de</span></a></span><span lang=EN-GB style='color:#1F497D'><o:p></o:p></span></p></td></tr></table></td></tr></table><p class=MsoNormal><span lang=EN-GB style='color:#1F497D'> <o:p></o:p></span></p><p class=MsoNormal><span lang=EN-GB style='color:#1F497D'> <o:p></o:p></span></p><p class=MsoNormal><span lang=EN-GB style='color:#1F497D'> <o:p></o:p></span></p><p class=MsoNormal><span lang=EN-GB style='color:#1F497D'><o:p> </o:p></span></p><p class=MsoNormal><span lang=EN-GB style='color:#1F497D'> <o:p></o:p></span></p><p class=MsoNormal><span lang=EN-GB style='color:#1F497D'><o:p> </o:p></span></p><p class=MsoNormal><span lang=EN-GB style='color:#1F497D'><o:p> </o:p></span></p><p class=MsoNormal><span lang=EN-GB style='color:#1F497D'><o:p> </o:p></span></p><p class=MsoNormal><span lang=EN-GB style='color:#1F497D'><o:p> </o:p></span></p><p class=MsoNormal><span lang=EN-GB style='color:#1F497D'><o:p> </o:p></span></p><p class=MsoNormal><span lang=EN-GB style='color:#1F497D'><o:p> </o:p></span></p><p class=MsoNormal><span lang=EN-GB style='color:#1F497D'><o:p> </o:p></span></p><p class=MsoNormal><span lang=EN-GB style='color:#1F497D'><o:p> </o:p></span></p><p class=MsoNormal><span lang=EN-GB style='color:#1F497D'>---</span><o:p></o:p></p><p class=MsoNormal style='margin-left:35.4pt'><b><span style='font-size:10.0pt;font-family:"Tahoma","sans-serif"'>Von:</span></b><span style='font-size:10.0pt;font-family:"Tahoma","sans-serif"'> Devin Rohan [mailto:dmrohan@gmail.com] <br><b>Gesendet:</b> Sonntag, 12. Juni 2011 02:10<br><b>An:</b> trnsys-users@cae.wisc.edu<br><b>Betreff:</b> [TRNSYS-users] TRNSYS Active Layer Flowrate<o:p></o:p></span></p><p class=MsoNormal style='margin-left:35.4pt'><o:p> </o:p></p><p class=MsoNormal style='margin-left:35.4pt'>The Type 56 manual suggests that the specific mass flow rate be greater than 13 kg/h-m^2. Say I wanted to convert this to mass flow rate in kg/s and the fluid was flowing through a 3/8" (or 9.525 mm) inside diameter pipe. Here's what I'm doing...<o:p></o:p></p><div><p class=MsoNormal style='margin-left:35.4pt'><o:p> </o:p></p></div><div><p class=MsoNormal style='margin-left:35.4pt'>A_pipe= (pi*D^2)/4 = (pi*.009525^2)/4= 7.1256 E-5 m^2<o:p></o:p></p></div><div><p class=MsoNormal style='margin-left:35.4pt'><o:p> </o:p></p></div><div><p class=MsoNormal style='margin-left:35.4pt'>13 kg/h-m^2 x (7.1256 E-5 m^2) x (h / 3600 sec) = 2.573 E-7 kg/s<o:p></o:p></p></div><div><p class=MsoNormal style='margin-left:35.4pt'><o:p> </o:p></p></div><div><p class=MsoNormal style='margin-left:35.4pt'>This seems like an awfully low mass flow rate, since what I've seen in literature for floor heating applications is around .05 kg/s. Am I missing something here?<br clear=all><br>-- <br>Devin M. Rohan<br><a href="mailto:drohan@purdue.edu" target="_blank">drohan@purdue.edu</a><o:p></o:p></p></div></div></body></html>