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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'>Dan and Danielle,<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'>Thank you for your excellent comments. The results make more sense to me now.<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'>Thanks again,<o:p></o:p></span></p><p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D'>Judy<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'><o:p> </o:p></span></p><p class=MsoNormal><b><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";color:#0D0D0D'>Judy Peters, PE LEED-AP BEMP<o:p></o:p></span></b></p><p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";color:#0D0D0D'>Energy Modeling Engineer<o:p></o:p></span></p><p class=MsoNormal><b><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";color:#0D0D0D'>Daikin Applied<o:p></o:p></span></b></p><p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";color:#0D0D0D'>763.553.5155<o:p></o:p></span></p><p class=MsoNormal><u><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";color:blue'><a href="mailto:judith.peters@daikinapplied.com">judith.peters@daikinapplied.com</a></span></u><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";color:#0D0D0D'> | <a href="http://www.daikinapplied.com/">www.DaikinApplied.com</a><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'><o:p> </o:p></span></p><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"'> Danielle Bond [mailto:danielle@ecapnet.com] <br><b>Sent:</b> Monday, June 19, 2017 11:07 AM<br><b>To:</b> Dan Nall<br><b>Cc:</b> Peters, Judith M; bldg-sim@lists.onebuilding.org<br><b>Subject:</b> Re: [Bldg-sim] Cooling Tower Approach<o:p></o:p></span></p><p class=MsoNormal><o:p> </o:p></p><div><p class=MsoNormal><span style='font-size:9.5pt'>In general, a smaller approach means the cooling tower is more efficiently rejecting heat, i.e. better performance. This overview is pretty good: </span><a href="http://spxcooling.com/pdf/TR-016.pdf" target="_blank"><span style='font-size:9.5pt'>http://spxcooling.com/pdf/TR-016.pdf</span></a><o:p></o:p></p><div><p class=MsoNormal><span style='font-size:9.5pt'><o:p> </o:p></span></p></div><div><p class=MsoNormal><span style='font-size:9.5pt'>Best,<o:p></o:p></span></p></div><div><p class=MsoNormal><span style='font-size:9.5pt'>Danielle<o:p></o:p></span></p></div><div><p class=MsoNormal><o:p> </o:p></p></div><div><p class=MsoNormal>-- <o:p></o:p></p><div><div><p class=MsoNormal>Danielle Bond, Ph.D.<o:p></o:p></p><div><p class=MsoNormal>Energy Engineer, <span style='font-size:9.5pt'>eCap Network</span><o:p></o:p></p></div><div><p class=MsoNormal><a href="http://www.ecapnet.com/" target="_blank">http://www.ecapnet.com/</a><o:p></o:p></p></div><div><p class=MsoNormal><o:p> </o:p></p></div><div><p class=MsoNormal><o:p> </o:p></p></div></div></div><div><p class=MsoNormal>On Mon, Jun 19, 2017 at 11:50 AM, Dan Nall via Bldg-sim <<a href="mailto:bldg-sim@lists.onebuilding.org" target="_blank">bldg-sim@lists.onebuilding.org</a>> wrote:<o:p></o:p></p><div><div><p class=MsoNormal style='margin-bottom:12.0pt'><span style='font-size:10.0pt;font-family:"Arial","sans-serif";color:black'>If you input a tower with a lower approach but with the same fan power, you would wind up with less annual fan energy consumption, because your fan with the lower approach temperature would hit the minimum condenser water temperature at a higher wet-bulb temperature, allowing the fan to back off more hours of the year. <o:p></o:p></span></p><p class=MsoNormal style='margin-bottom:12.0pt'><span class=gmail-><span style='font-size:10.0pt;font-family:"Arial","sans-serif";color:black'>-----Original Message----- </span></span><span style='font-size:10.0pt;font-family:"Arial","sans-serif";color:black'><br><span class=gmail->From: "Peters, Judith M via Bldg-sim" </span><br><span class=gmail->Sent: Jun 19, 2017 11:13 AM </span><br><span class=gmail->To: "<a href="mailto:bldg-sim@lists.onebuilding.org" target="_blank">bldg-sim@lists.onebuilding.org</a>" </span><br><span class=gmail->Subject: [Bldg-sim] Cooling Tower Approach </span></span><span class=gmail-><o:p></o:p></span></p><div><p class=MsoNormal style='mso-margin-top-alt:auto;mso-margin-bottom-alt:auto'><span style='color:black'>I am looking for tips on how to properly compare tower approach temps. Currently, I am comparing a 7 F approach with a 5 F approach. The tower has 4 cells with 44 kW fan energy for each cell and a 10 F range. </span><o:p></o:p></p><p class=MsoNormal style='mso-margin-top-alt:auto;mso-margin-bottom-alt:auto'><span style='color:black'> <o:p></o:p></span></p><p class=MsoNormal style='mso-margin-top-alt:auto;mso-margin-bottom-alt:auto'><span style='color:black'>Regardless of control parameters, the program shows less tower energy for a smaller approach and I was expecting the opposite.<o:p></o:p></span></p><p class=MsoNormal style='mso-margin-top-alt:auto;mso-margin-bottom-alt:auto'><span style='color:black'> <o:p></o:p></span></p><p class=MsoNormal style='mso-margin-top-alt:auto;mso-margin-bottom-alt:auto'><span style='color:black'>Can anyone shed some light on this issue?<o:p></o:p></span></p><p class=MsoNormal style='mso-margin-top-alt:auto;mso-margin-bottom-alt:auto'><span style='color:black'> <o:p></o:p></span></p><p class=MsoNormal style='mso-margin-top-alt:auto;mso-margin-bottom-alt:auto'><span style='color:black'>Thank you!<o:p></o:p></span></p><p class=MsoNormal style='mso-margin-top-alt:auto;mso-margin-bottom-alt:auto'><span style='color:black'> <o:p></o:p></span></p><p class=MsoNormal style='mso-margin-top-alt:auto;mso-margin-bottom-alt:auto'><span style='color:black'> <o:p></o:p></span></p><p class=MsoNormal style='mso-margin-top-alt:auto;mso-margin-bottom-alt:auto'><span style='color:black'> <o:p></o:p></span></p><p class=MsoNormal style='mso-margin-top-alt:auto;mso-margin-bottom-alt:auto'><b><span style='color:#0D0D0D'>Judy Peters, PE LEED-AP BEMP</span></b><span style='color:black'><o:p></o:p></span></p><p class=MsoNormal style='mso-margin-top-alt:auto;mso-margin-bottom-alt:auto'><span style='color:#0D0D0D'>Energy Modeling Engineer</span><span style='color:black'><o:p></o:p></span></p><p class=MsoNormal style='mso-margin-top-alt:auto;mso-margin-bottom-alt:auto'><b><span style='color:#0D0D0D'>Daikin Applied</span></b><span style='color:black'><o:p></o:p></span></p><p class=MsoNormal style='mso-margin-top-alt:auto;mso-margin-bottom-alt:auto'><span style='color:#0D0D0D'><a href="tel:(763)%20553-5155" target="_blank">763.553.5155</a></span><span style='color:black'><o:p></o:p></span></p><p class=MsoNormal style='mso-margin-top-alt:auto;mso-margin-bottom-alt:auto'><u><span style='color:blue'><a href="mailto:judith.peters@daikinapplied.com" target="_blank">judith.peters@daikinapplied.com</a></span></u><span style='color:#0D0D0D'> | <a href="http://www.daikinapplied.com/" target="_blank">www.DaikinApplied.com</a></span><span style='color:black'><o:p></o:p></span></p><p class=MsoNormal style='mso-margin-top-alt:auto;mso-margin-bottom-alt:auto'><span style='color:black'> <o:p></o:p></span></p><p class=MsoNormal style='mso-margin-top-alt:auto;mso-margin-bottom-alt:auto'><span style='color:black'> <o:p></o:p></span></p></div></div></div><p class=MsoNormal style='margin-bottom:12.0pt'><br>_______________________________________________<br>Bldg-sim mailing list<br><a href="http://lists.onebuilding.org/listinfo.cgi/bldg-sim-onebuilding.org" target="_blank">http://lists.onebuilding.org/listinfo.cgi/bldg-sim-onebuilding.org</a><br>To unsubscribe from this mailing list send a blank message to <a href="mailto:BLDG-SIM-UNSUBSCRIBE@ONEBUILDING.ORG">BLDG-SIM-UNSUBSCRIBE@ONEBUILDING.ORG</a><o:p></o:p></p></div><p class=MsoNormal><br><br clear=all><o:p></o:p></p><div><p class=MsoNormal><o:p> </o:p></p></div><div><div><div><p class=MsoNormal><o:p> </o:p></p></div></div></div></div></div></div></body></html>