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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'>Remember a packaged cooling equipment EER is the ratio of cooling effect (Btu/hr) provided divided by the total (supply fan, compressor, condenser fans and controls) energy draw (W).<o:p></o:p></span></p><p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D'>So to get from the packaged unit EER to DOE-2 cooling EIR value and the EIR curves you need to remove the fan energy at each point. That AHRI standard that Bill mentioned addresses what the fan volume and static pressure (but not explicitly fan power) has to be at each of the four part load points. Good luck. <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><p class=MsoNormal style='text-autospace:none'><b><span style='font-size:9.0pt;font-family:"Verdana","sans-serif";color:#5F574F'>Paul Riemer, PE, LEED AP BD+C</span></b><span style='font-size:9.0pt;font-family:"Calibri","sans-serif";color:#1F497D'> <o:p></o:p></span></p><p class=MsoNormal><b><span style='font-family:"Verdana","sans-serif";color:#C00000'>DUNHAM</span></b><span style='font-size:11.0pt;font-family:"Verdana","sans-serif";color:#C00000'><o:p></o:p></span></p></div><p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D'><o:p> </o:p></span></p><div><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"'> equest-users-bounces@lists.onebuilding.org [mailto:equest-users-bounces@lists.onebuilding.org] <b>On Behalf Of </b>Bishop, Bill<br><b>Sent:</b> Thursday, October 03, 2013 8:58 AM<br><b>To:</b> Bobby Almeida; Kathryn Kerns; equest-users@lists.onebuilding.org<br><b>Subject:</b> Re: [Equest-users] Question regarding DX-Cool-EIR-fPLR & IEER<o:p></o:p></span></p></div></div><p class=MsoNormal><o:p> </o:p></p><div><p class=MsoNormal style='mso-margin-top-alt:auto;mso-margin-bottom-alt:auto'>You would need to evaluate/modify two separate curves to match the IEER. IEER is a function of part load and condenser temperature, holding return air temperature (EAT) constant. The COOL-EIR-FPLR curve is a function of the part load ratio only, not temperature. The COOL-EIR-FT curve is a function of EAT and condenser temperature (OAT or EWT).<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'>The IEER formula and methodology are described in section 6.2 of <a href="http://www.ahrinet.org/App_Content/ahri/files/standards%20pdfs/ANSI%20standards%20pdfs/ANSI%20AHRI%20Standard%20340-360-2007%20with%20Addenda%201%20and%202.pdf">AHRI 340/360-2007 with Addenda 1 and 2</a>.<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'>Regards,<o:p></o:p></p><p class=MsoNormal style='mso-margin-top-alt:auto;mso-margin-bottom-alt:auto'>Bill<o:p></o:p></p><p class=MsoNormal style='mso-margin-top-alt:auto;mso-margin-bottom-alt:auto'><o:p> </o:p></p><div><p class=MsoNormal style='mso-margin-top-alt:auto;mso-margin-bottom-alt:auto'><b>William Bishop, PE, BEMP, BEAP, LEED AP | Pathfinder Engineers & Architects LLP<o:p></o:p></b></p><p class=MsoNormal style='mso-margin-top-alt:auto;mso-margin-bottom-alt:auto'>Senior Energy Engineer<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'>134 South Fitzhugh Street Rochester, NY 14608<o:p></o:p></p><p class=MsoNormal style='mso-margin-top-alt:auto;mso-margin-bottom-alt:auto'>T: (585) 325-6004 Ext. 114 F: (585) 325-6005<o:p></o:p></p><p class=MsoNormal style='mso-margin-top-alt:auto;mso-margin-bottom-alt:auto'><a href="mailto:wbishop@pathfinder-ea.com">bbishop@pathfinder-ea.com</a> <a href="http://www.pathfinder-ea.com/">www.pathfinder-ea.com</a><o:p></o:p></p><p class=MsoNormal style='mso-margin-top-alt:auto;mso-margin-bottom-alt:auto'>P Sustainability – the forest AND the trees. P <o:p></o:p></p></div><p class=MsoNormal style='mso-margin-top-alt:auto;mso-margin-bottom-alt:auto'><o:p> </o:p></p><div><div><p class=MsoNormal style='mso-margin-top-alt:auto;mso-margin-bottom-alt:auto'><b>From:</b> equest-users-bounces@lists.onebuilding.org [mailto:equest-users-bounces@lists.onebuilding.org] <b>On Behalf Of </b>Bobby Almeida<br><b>Sent:</b> Wednesday, October 02, 2013 8:42 PM<br><b>To:</b> Kathryn Kerns; equest-users@lists.onebuilding.org<br><b>Subject:</b> Re: [Equest-users] Question regarding DX-Cool-EIR-fPLR<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'>Hi Kathryn,<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'>On our projects where we take credit for part load efficiencies we use addendum s to 90.1-2007. This adds in IEER values for units so you’re comparing apples to apples. The only projects we have modeled this on have had baseline systems that were 9.5 EER with an IEER of 9.6. With such a small difference between EER and IEER, the 25%, 50% and 75% values aren’t that important. 9.5 EER at full load and 9.6 at the other values will get you the 9.6 required for baseline. For information on how to make curves I would look through the archives of this user group, there have been some great explanations.<o:p></o:p></p><p class=MsoNormal style='mso-margin-top-alt:auto;mso-margin-bottom-alt:auto'><o:p> </o:p></p><div><p class=MsoNormal style='mso-margin-top-alt:auto;mso-margin-bottom-alt:auto'>Bobby Almeida, E.I.T. <img border=0 width=19 height=21 id="_x0000_i1025" src="cid:image001.jpg@01CEC019.F62B95D0" alt="Description: LEEDAP_BDCcmyk"> <o:p></o:p></p><p class=MsoNormal style='mso-margin-top-alt:auto;mso-margin-bottom-alt:auto'>Project Engineer<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'><img border=0 width=62 height=83 id="_x0000_i1026" src="cid:image002.jpg@01CEC019.F62B95D0" alt="Description: New Image_033010 copy_reduced"><o:p></o:p></p><p class=MsoNormal style='mso-margin-top-alt:auto;mso-margin-bottom-alt:auto'>4051 Glencoe Ave. Suite 5 <o:p></o:p></p><p class=MsoNormal style='mso-margin-top-alt:auto;mso-margin-bottom-alt:auto'>Marina del Rey, CA 90292<o:p></o:p></p><p class=MsoNormal style='mso-margin-top-alt:auto;mso-margin-bottom-alt:auto'>p. 310.591.8172<o:p></o:p></p><p class=MsoNormal style='mso-margin-top-alt:auto;mso-margin-bottom-alt:auto'>c. 925.980.2025<o:p></o:p></p><p class=MsoNormal style='mso-margin-top-alt:auto;mso-margin-bottom-alt:auto'><a href="http://www.gaiadevelopment.com/">www.gaiadevelopment.com</a><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'>P Please consider the trees before printing this email<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'>Legal Notice: This message and any materials attached are confidential, and are intended solely for the use of the addressee. If you are not the intended recipient, be advised that unauthorized use, disclosure, copying, or distribution is strictly prohibited. If you received this message in error please do not read it, notify the sender, and delete your copy immediately. <o:p></o:p></p></div><p class=MsoNormal style='mso-margin-top-alt:auto;mso-margin-bottom-alt:auto'><o:p> </o:p></p><div><div><p class=MsoNormal style='mso-margin-top-alt:auto;mso-margin-bottom-alt:auto'><b>From:</b> <a href="mailto:equest-users-bounces@lists.onebuilding.org">equest-users-bounces@lists.onebuilding.org</a> [<a href="mailto:equest-users-bounces@lists.onebuilding.org">mailto:equest-users-bounces@lists.onebuilding.org</a>] <b>On Behalf Of </b>Kathryn Kerns<br><b>Sent:</b> Wednesday, October 02, 2013 3:37 PM<br><b>To:</b> <a href="mailto:equest-users@lists.onebuilding.org">equest-users@lists.onebuilding.org</a><br><b>Subject:</b> [Equest-users] Question regarding DX-Cool-EIR-fPLR<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'>Everyone, has anyone ever modified the standard DX-Cool-EIR-fPLR curve to fit a particular DX cooling system? If so, when you compared it to a baseline DX cooling system, did you use the original eQuest DX-Cool-EIR-fPLR? <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'>I looked through ASHRAE 90.1 -2007 and although there is full load EER data for air conditioners and heat pumps, there is no IEER data. <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'>However, it occurs to me that if ASHRAE 90.1 starts including IEER data (which shows up in ASHRAE 90.1 -2010 Section 6) how are we going to modify the eQuest DX-Cool-EIR-fPLR to accommodate the IEER? The IEER is a single number and we have no idea what the 25%, 50%, 75% cooling load ratios look like.<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'>Hmmm.<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'><o:p> </o:p></p><p class=section1><strong>Kathryn Kerns</strong><o:p></o:p></p><p class=section1><em><b>Systems Specialist</b></em><o:p></o:p></p><p class=section1><em><b>BCE</b></em><strong> Engineers, Inc.<o:p></o:p></strong></p><p class=section1><strong>| Ph: 253.922.0446 | Fx: 253.922.0896 |</strong> <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'><o:p> </o:p></p></div></div></body></html>