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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'>I would use the chilled ceiling room units and connect them chilled water loop supplying the constant temperature, but set the chiller fuel code to none and zero out any heat rejection energy such as cooling tower or condenser fans. System 9g would be a good start since it can be used for ventilation and has the room units already assigned. The only thing you won’t see is the thermal mass effects of the slab. The chilled ceiling is really to model just a panel. For an early study, I wouldn’t go through the trouble of trying to get the slab right as it requires much more effort.<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><b><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D'>Cory Duggin, PE, LEED AP BD+C <o:p></o:p></span></b></p><p class=MsoNormal><i><span style='font-size:10.0pt;font-family:"Calibri","sans-serif";color:#333333'>Associate/Energy Engineer<o:p></o:p></span></i></p><p class=MsoNormal><b><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";color:#006363'>TLC Engineering for Architecture </span></b><span style='color:#1F497D'><o:p></o:p></span></p><table class=MsoNormalTable border=0 cellspacing=0 cellpadding=0><tr><td valign=bottom style='padding:0in 0in 0in 0in'><p class=MsoNormal align=right style='text-align:right'><span style='font-size:9.0pt;font-family:"Calibri","sans-serif";color:#333333'>direct: </span><span style='font-size:9.0pt;font-family:"Calibri","sans-serif";color:#555555'><o:p></o:p></span></p></td><td valign=bottom style='padding:0in 0in 0in 0in'><p class=MsoNormal><span style='font-size:10.0pt;font-family:"Calibri","sans-serif";color:#1F497D'>615-346-1939</span><span style='font-size:10.0pt;font-family:"Calibri","sans-serif";color:#1F497D'><o:p></o:p></span></p></td></tr></table><p class=MsoNormal><span style='font-size:10.0pt;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'><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"'> Bldg-sim [mailto:bldg-sim-bounces@lists.onebuilding.org] <b>On Behalf Of </b>Claire Das Bhaumik<br><b>Sent:</b> Wednesday, June 10, 2015 9:02 AM<br><b>To:</b> bldg-sim@lists.onebuilding.org<br><b>Subject:</b> [Bldg-sim] Modelling groundwater cooling via concrete slab<o:p></o:p></span></p></div><p class=MsoNormal><o:p> </o:p></p><div><div><p class=MsoNormal><span style='font-family:"Arial","sans-serif"'>I'm looking for the most suitable approach for modelling groundwater cooling in a thermal model. It's proposed to have pipes embedded in a concrete ceiling with groundwater flowing through them. The groundwater supply temp will be fixed at around 12degC. </span><o:p></o:p></p></div><div><p class=MsoNormal style='mso-margin-top-alt:auto;mso-margin-bottom-alt:auto'><o:p> </o:p></p><p class=MsoNormal style='mso-margin-top-alt:auto;mso-margin-bottom-alt:auto'><span style='font-family:"Arial","sans-serif"'>I'm using IES software but I expect the possible approaches would be similar with most packages.</span><o:p></o:p></p><p class=MsoNormal style='mso-margin-top-alt:auto;mso-margin-bottom-alt:auto'><o:p> </o:p></p><p class=MsoNormal style='mso-margin-top-alt:auto;mso-margin-bottom-alt:auto'><span style='font-family:"Arial","sans-serif"'>I could either use a simplified approach calculating the cooling capacity from the flow rate and temperature difference, or use a detailed systems modelling approach. I want something fairly quick but reasonably accurate (don't we all?!) as it's a preliminary study.</span><o:p></o:p></p><p class=MsoNormal style='mso-margin-top-alt:auto;mso-margin-bottom-alt:auto'><o:p> </o:p></p><p class=MsoNormal style='mso-margin-top-alt:auto;mso-margin-bottom-alt:auto'><span style='font-family:"Arial","sans-serif"'>Thanks,</span><o:p></o:p></p></div><p class=MsoNormal><br clear=all><o:p></o:p></p><div><div><div><div><div><p><b><span style='color:#262626'>Dr Claire Das Bhaumik CEng FCIBSE</span></b><o:p></o:p></p><p><b><span style='font-size:10.0pt;color:#365F91'>Partner - Inkling LLP</span></b><o:p></o:p></p><p><b><span style='font-size:10.0pt;color:#1F497D'> </span></b><span style='font-size:9.0pt;color:#262626'>e: </span><a href="mailto:claire@inklingllp.com" target="_blank"><span style='font-size:9.0pt;color:#262626;text-decoration:none'>claire@inklingllp.com</span></a><o:p></o:p></p><p><span style='font-size:9.0pt;color:#262626'>t: 07950 282800</span><o:p></o:p></p><p><span style='font-size:9.0pt;color:#262626'>w: <a href="http://www.inklingllp.com/" target="_blank"><span style='color:#262626;text-decoration:none'>www.inklingllp.com</span></a></span><o:p></o:p></p><p><span style='font-size:9.0pt;color:#365F91'>Follow us on Twitter: @DasInkling</span><o:p></o:p></p><p><span style='font-size:9.0pt;color:#262626'>Partnership No. OC367619</span><o:p></o:p></p></div></div></div></div></div></div></div></body></html>