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</o:shapelayout></xml><![endif]--></head><body lang=EN-US link=blue vlink=purple><div class=WordSection1><p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D'>Aziz,<o:p></o:p></span></p><p class=MsoNormal><span 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:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D'>As far as heat pump types go, I have found that it is easier to curve fit performance data from the manufacturer, and create a user defined function to provide output fluid temperatures with efficiencies at given inlet conditions. <o:p></o:p></span></p><p class=MsoNormal><span 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:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D'>-Aaron<o:p></o:p></span></p><p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D'><o:p> </o:p></span></p><p class=MsoNormal><a name="_MailEndCompose"></a><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D'><o:p> </o:p></span></p><div style='border:none;border-top:solid #B5C4DF 1.0pt;padding:3.0pt 0in 0in 0in'><p class=MsoNormal><b><span style='font-size:10.0pt;font-family:"Tahoma","sans-serif"'>From:</span></b><span style='font-size:10.0pt;font-family:"Tahoma","sans-serif"'> Aziz Aziz [mailto:azizej2002@yahoo.fr] <br><b>Sent:</b> Saturday, November 20, 2010 7:39 AM<br><b>To:</b> Trnsys Users<br><b>Subject:</b> [TRNSYS-users] Ground source heat pumps<o:p></o:p></span></p></div><p class=MsoNormal><o:p> </o:p></p><table class=MsoNormalTable border=0 cellspacing=0 cellpadding=0><tr><td valign=top style='padding:0in 0in 0in 0in'><p class=MsoNormal>Hello,<o:p></o:p></p><p class=MsoNormal> <o:p></o:p></p><p class=MsoNormal>I want to simulate a ground source heat pumps with trnsys (well without groundwater) and I want to use U tube Heat exchanger. With which type for heat pump can I do that? In TESS example I have found Type 504 but for water source heat pumps.<o:p></o:p></p><p class=MsoNormal> <o:p></o:p></p><p class=MsoNormal>Thanks in advance.<o:p></o:p></p><p class=MsoNormal> <o:p></o:p></p><p class=MsoNormal>Best regards.<o:p></o:p></p><p class=MsoNormal> <o:p></o:p></p><p class=MsoNormal>Aziz<o:p></o:p></p></td></tr></table><p class=MsoNormal><span style='font-size:10.0pt;font-family:"Calibri","sans-serif"'><o:p> </o:p></span></p></div></body></html>