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</o:shapelayout></xml><![endif]--></head><body lang=EN-US link=blue vlink=purple><div class=WordSection1><p class=MsoNormal>Hi everyone,<o:p></o:p></p><p class=MsoNormal><o:p> </o:p></p><p class=MsoNormal>I’m making a model and we’re looking into the energy impact of higher performance HVAC units. Because of the climate the units work at part load most of the time so the part load efficiencies make a huge difference. For example the 2 units I’m comparing have performances of (12 ton units)<o:p></o:p></p><p class=MsoNormal><o:p> </o:p></p><p class=MsoNormal style='margin-left:.5in;text-indent:.5in'>Unit 1 Unit 2<o:p></o:p></p><p class=MsoNormal>Full Load 11.0 EER 11.9 EER<o:p></o:p></p><p class=MsoNormal>75% 11.2 EER 15.5 EER<o:p></o:p></p><p class=MsoNormal>50% 12.1 EER 23.5 EER<o:p></o:p></p><p class=MsoNormal>25% 11.4 EER 25.0 EER<o:p></o:p></p><p class=MsoNormal><o:p> </o:p></p><p class=MsoNormal><o:p> </o:p></p><p class=MsoNormal>I’ve gone into excel and made curves, normalized them, and found the coefficients to enter into a custom performance curve, as described in previous threads on the user group. I attached that curve to the unit and found that the unit with a high IEER (unit 2) barely performed better than the default curve in eQuest. The project is pursuing LEED certification and we need to get all of the energy savings possible. My main question is how do I best model the performance curves for baseline. I tried changing the curve in baseline so that it would be at 1 no matter the load, which raised the cooling load to a number that seemed too large. Does anyone have experience making good curves for baseline so that I can correctly claim the savings for the high IEER unit? The project also has some large air handlers with high efficiencies at part load. Would it be any different to make a baseline curve for an air handler with VAV?<o:p></o:p></p><p class=MsoNormal><o:p> </o:p></p><p class=MsoNormal>Thanks,<o:p></o:p></p><p class=MsoNormal><o:p> </o:p></p><p class=MsoNormal><o:p> </o:p></p><p class=MsoNormal><span style='color:#404040'>Bobby Almeida</span><span style='color:#4B6C83'> <img width=19 height=21 id="Picture_x0020_8" src="cid:image001.jpg@01CD6679.338F55C0" alt="Description: LEEDAP_BDCcmyk"> </span><o:p></o:p></p><p class=MsoNormal><span style='color:#404040'>Project Engineer</span><o:p></o:p></p><p class=MsoNormal><o:p> </o:p></p><p class=MsoNormal><span style='color:#1F497D'><img width=62 height=83 id="Picture_x0020_18" src="cid:image002.jpg@01CD6679.338F55C0" alt="Description: New Image_033010 copy_reduced"></span><o:p></o:p></p><p class=MsoNormal><span style='font-size:10.0pt;color:#404040'>4051 Glencoe Ave. Suite 5 </span><o:p></o:p></p><p class=MsoNormal><span style='font-size:10.0pt;color:#404040'>Marina del Rey, CA 90292</span><o:p></o:p></p><p class=MsoNormal><span style='font-size:10.0pt;color:#404040'>p. 310.591.8172</span><o:p></o:p></p><p class=MsoNormal><span style='font-size:10.0pt;color:#404040'>c. 925.980.2025</span><o:p></o:p></p><p class=MsoNormal><span style='font-size:10.0pt;color:#1F497D'><a href="http://www.gaiadevelopment.com/">www.gaiadevelopment.com</a></span><o:p></o:p></p><p class=MsoNormal> <o:p></o:p></p><p class=MsoNormal><span style='font-size:9.0pt;font-family:Webdings;color:#4B6C83'>P </span><span style='font-size:8.5pt;font-family:"Arial","sans-serif";color:#4B6C83'>Please consider the trees before printing this email<o:p></o:p></span></p><p class=MsoNormal><span style='font-size:7.5pt;font-family:"Comic Sans MS"'><o:p> </o:p></span></p><p class=MsoNormal><span style='font-size:7.5pt;font-family:"Comic Sans MS";color:#404040'>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.</span> <o:p></o:p></p><p class=MsoNormal><o:p> </o:p></p></div></body></html>