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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='color:#1F497D'>Christie – it’s kinda hard to evaluate possible causes without more details, but I can suggest a few things:<o:p></o:p></span></p><p class=MsoNormal><span style='color:#1F497D'><o:p> </o:p></span></p><p class=MsoNormal><span style='color:#1F497D'>The % number and the “Hours above/below” figures on BEPS/BEPU are on different metrics, IIRC (“% of hours fans on” vs. “hours of the year”). That they disagree to this extent <u>may </u>mean you have many “undercooled” hours occurring when you’ve dictated the fans are off. You should be able to identify which zones are having the trouble, then for a specific zone in which hours of the day those are occurring between the different SIM reports – I can’t recount which ones exactly from memory, but SS-R/F/O comes to mind – maybe others…?<o:p></o:p></span></p><p class=MsoNormal><span style='color:#1F497D'><o:p> </o:p></span></p><p class=MsoNormal><span style='color:#1F497D'>If that’s the case, then it could be a simple matter of reviewing your t-stat setpoints in the respective schedules and ensuring setback temps are happening when you intend them to. You might also ask yourself what should be happening with regard to morning warmup and see if that’s reflected in your model as well.<o:p></o:p></span></p><p class=MsoNormal><span style='color:#1F497D'><o:p> </o:p></span></p><p class=MsoNormal><span style='color:#1F497D'>If the underheated/cooled hours are occurring in the middle of the day – that may conversely be a sign of inadequate capacities (heating/cooling/airflow), in which case I’d start by reviewing airflow-related scheduling and specified quantities.<o:p></o:p></span></p><p class=MsoNormal><span style='color:#1F497D'><o:p> </o:p></span></p><p class=MsoNormal><span style='color:#1F497D'>The “detailed simulation reports summary” PDF under the help menu is a good starting point to help you see what clues the SIM reports can give. Note you can ‘ctrl+f’ through it to find topics/reports of interest. <o:p></o:p></span></p><p class=MsoNormal><span style='color:#1F497D'><o:p> </o:p></span></p><p class=MsoNormal><span style='color:#1F497D'>Try seeing what you can learn from the SIM reports, and post again with your findings if after that you’re still stuck for ideas as to what might be off ;).<o:p></o:p></span></p><p class=MsoNormal><span style='color:#1F497D'><o:p> </o:p></span></p><p class=MsoNormal><span style='color:#1F497D'>~Nick<o:p></o:p></span></p><p class=MsoNormal><span style='color:#1F497D'><o:p> </o:p></span></p><div><p class=MsoNormal><span style='color:#1F497D'><img width=119 height=37 id="_x0000_i1026" src="cid:image002.jpg@01CC68BE.AE18D640" alt="cid:489575314@22072009-0ABB"></span><b><span style='font-family:"Stylus BT","sans-serif";color:#2D4D5E'><o:p></o:p></span></b></p><p class=MsoNormal><b><span style='font-family:"Stylus BT","sans-serif";color:#2D4D5E'><o:p> </o:p></span></b></p><p class=MsoNormal><b><span style='font-size:12.0pt;font-family:"Stylus BT","sans-serif";color:#2D4D5E'>NICK CATON, P.E.</span></b><b><span style='font-size:12.0pt;font-family:"Stylus BT","sans-serif";color:#2D4D5E'><o:p></o:p></span></b></p><p class=MsoNormal><span style='font-size:7.5pt;color:#CC9900'>SENIOR ENGINEER<o:p></o:p></span></p><p class=MsoNormal><span style='font-size:7.5pt;color:#CC9900'><o:p> </o:p></span></p><p class=MsoNormal><span style='font-size:10.0pt;color:#2D4D5E'>Smith & Boucher Engineers</span><span style='font-size:7.5pt;font-family:"Times New Roman","serif";color:#CC9900'><o:p></o:p></span></p><p class=MsoNormal><span style='font-size:10.0pt;color:#2D4D5E'>25501 west valley parkway, suite 200<o:p></o:p></span></p><p class=MsoNormal><span style='font-size:10.0pt;color:#2D4D5E'>olathe, ks 66061<o:p></o:p></span></p><p class=MsoNormal><span style='font-size:10.0pt;color:#2D4D5E'>direct 913.344.0036<o:p></o:p></span></p><p class=MsoNormal><span style='font-size:10.0pt;color:#2D4D5E'>fax 913.345.0617<o:p></o:p></span></p><p class=MsoNormal><span style='color:#1F497D'><a href="www.smithboucher.com" title="blocked::www.smithboucher.com"><span style='font-size:10.0pt'>www.smithboucher.com</span></a></span><u><span style='font-size:10.0pt;color:blue'> </span></u><span style='color:#1F497D'><o:p></o:p></span></p></div><p class=MsoNormal><span style='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>Rimes, Christie<br><b>Sent:</b> Tuesday, August 30, 2011 11:44 AM<br><b>To:</b> equest-users@lists.onebuilding.org<br><b>Subject:</b> [Equest-users] Nat Vent and Unment Load hrs<o:p></o:p></span></p></div></div><p class=MsoNormal><o:p> </o:p></p><p class=MsoNormal>Hi all,<o:p></o:p></p><p class=MsoNormal><o:p> </o:p></p><p class=MsoNormal>So a follow up then to how unmet load hours are calculated. I have a naturally ventilated office building that I have the fans running from 7am-5pm Mon-Fri. I also have the fans “cycling on any”. The SS-R reports show that the unmet load hours for cooling are really low however below the unmet load hours for cooling is 2781. This is impossible with only 9.42% hours outside the throttle range. Could someone help me reduce this number?<o:p></o:p></p><p class=MsoNormal><o:p> </o:p></p><p class=MsoNormal><img border=0 width=793 height=126 id="Picture_x0020_1" src="cid:image003.jpg@01CC68BE.AE18D640"><o:p></o:p></p><p class=MsoNormal><o:p> </o:p></p><p class=MsoNormal><o:p> </o:p></p><p class=MsoNormal><b><span lang=EN-GB style='font-family:"Arial","sans-serif";color:#333399'>Christie Rimes, LEED BD+C</span></b><o:p></o:p></p><p class=MsoNormal><b><i><span lang=EN-GB style='font-size:9.0pt;font-family:"Arial","sans-serif";color:#66737D'>Designer</span></i></b><o:p></o:p></p><p class=MsoNormal><b><span lang=EN-GB style='font-size:10.0pt;font-family:"Arial","sans-serif";color:#333399'>WSP</span></b><b><span lang=EN-GB style='font-size:10.0pt;font-family:"Arial","sans-serif";color:#0069FB'> </span></b><b><span lang=EN-GB style='font-size:10.0pt;font-family:"Arial","sans-serif";color:#333399'>▪</span></b><b><span lang=EN-GB style='font-size:10.0pt;font-family:"Arial","sans-serif";color:#0069FB'> </span></b><b><span lang=EN-GB style='font-size:10.0pt;font-family:"Arial","sans-serif";color:black'>FLACK + KURTZ</span></b><o:p></o:p></p><p class=MsoNormal><b><span lang=EN-GB style='font-size:9.0pt;font-family:"Arial","sans-serif";color:#66737D'>405 Howard Street, Suite 500<o:p></o:p></span></b></p><p class=MsoNormal><b><span lang=EN-GB style='font-size:9.0pt;font-family:"Arial","sans-serif";color:#66737D'>San Francisco, CA 94105</span></b><o:p></o:p></p><p class=MsoNormal><b><span lang=EN-GB style='font-size:9.0pt;font-family:"Arial","sans-serif";color:#66737D'>Direct: 415.402.2727 | Main: 415.398.3833</span></b><o:p></o:p></p><p class=MsoNormal><span lang=EN-GB style='font-size:9.0pt;font-family:"Arial","sans-serif";color:#66737D'><a href="http://www.wspfk.com/" title="http://www.wspfk.com/"><span style='font-family:"Times New Roman","serif"'>www.wspfk.com</span></a></span><o:p></o:p></p><p class=MsoNormal><span lang=EN-GB style='font-size:8.0pt;font-family:"Arial","sans-serif";color:#66737D'> </span><o:p></o:p></p><p class=MsoNormal><b><span lang=EN-GB style='font-size:9.0pt;font-family:"Arial","sans-serif";color:green'>Ensuring that today’s built environment preserves</span></b><b><span lang=EN-GB style='font-size:9.0pt;font-family:"Arial","sans-serif";color:navy'> </span></b><b><span lang=EN-GB style='font-size:9.0pt;font-family:"Arial","sans-serif";color:green'>the natural environment in which we all live.</span></b><o:p></o:p></p><p class=MsoNormal><b><span lang=EN-GB style='font-size:10.0pt;font-family:"Arial","sans-serif";color:navy'> </span></b><o:p></o:p></p><p class=MsoNormal><b><span lang=EN-GB style='font-size:10.0pt;font-family:"Arial","sans-serif";color:gray'>We are WSP.</span></b><b><span lang=EN-GB style='font-size:10.0pt;font-family:"Arial","sans-serif";color:navy'> </span></b><b><span lang=EN-GB style='font-size:10.0pt;font-family:"Arial","sans-serif";color:gray'>United by our difference.</span></b><o:p></o:p></p><p class=MsoNormal><b><span lang=EN-GB style='font-size:10.0pt;font-family:"Arial","sans-serif";color:gray'> </span></b><o:p></o:p></p><p class=MsoNormal><span lang=EN-GB style='font-size:9.0pt;font-family:"Arial","sans-serif";color:gray'>WSP is one of the world’s fastest-growing design, engineering and management consultancies. 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