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</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>