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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'>All responders,<o:p></o:p></span></p><p class=MsoNormal><span style='color:#1F497D'>Your comments have been helpful! Thank you! (but I don’t think I have a simple solution yet. Still hoping there is one!)<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'>Steven,<o:p></o:p></span></p><p class=MsoNormal><span style='color:#1F497D'>EnergyPlus is my weapon of choice. Thanks for offering!<o:p></o:p></span></p><p class=MsoNormal><span style='color:#1F497D'><o:p> </o:p></span></p><div><p class=MsoNormal align=center style='text-align:center'><b><span style='font-size:13.5pt;color:#1F497D'>The Building Performance Team<br></span></b><b><span style='color:#1F497D'>James V. Dirkes II, P.E., BEMP , LEED AP<br></span></b><span style='color:#1F497D'>1631 Acacia Drive NW<br>Grand Rapids, MI 49504<br>616 450 8653<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"'> Steven Savich [mailto:ssavich@systemswestengineers.com] <br><b>Sent:</b> Friday, December 02, 2011 11:36 AM<br><b>To:</b> 'Jim Dirkes'<br><b>Cc:</b> 'Bldg-Sim'<br><b>Subject:</b> RE: [Bldg-sim] ASHRAE 90.1 unmet load hours<o:p></o:p></span></p></div></div><p class=MsoNormal><o:p> </o:p></p><p class=MsoNormal><span style='color:#1F497D'>Jim,<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'>what program are you working in?<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 equest, can you send your .inp/.pd2 files?<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'>Steven<o:p></o:p></span></p><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"'> <a href="mailto:bldg-sim-bounces@lists.onebuilding.org">bldg-sim-bounces@lists.onebuilding.org</a> <a href="mailto:[mailto:bldg-sim-bounces@lists.onebuilding.org]">[mailto:bldg-sim-bounces@lists.onebuilding.org]</a> <b>On Behalf Of </b>Jim Dirkes<br><b>Sent:</b> Friday, December 02, 2011 6:33 AM<br><b>To:</b> <a href="mailto:bldg-sim@lists.onebuilding.org">bldg-sim@lists.onebuilding.org</a><br><b>Subject:</b> [Bldg-sim] ASHRAE 90.1 unmet load hours<o:p></o:p></span></p></div></div><p class=MsoNormal><o:p> </o:p></p><p><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D'>Dear Forum,<br>Feedback requested, please! I’ve looked at some past posts on this general topic and think I am asking about aspects not previously discussed….<o:p></o:p></span></p><p style='margin-bottom:0in;margin-bottom:.0001pt'><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D'>From previous posts and my own understanding:<o:p></o:p></span></p><p style='mso-margin-top-alt:0in;margin-right:0in;margin-bottom:0in;margin-left:.5in;margin-bottom:.0001pt;text-indent:-.25in;mso-list:l0 level1 lfo2'><![if !supportLists]><span style='font-size:11.0pt;font-family:Symbol;color:#1F497D'><span style='mso-list:Ignore'>·<span style='font:7.0pt "Times New Roman"'> </span></span></span><![endif]><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D'>If one or more zones is not meeting its setpoint in a given hour, you have 1 unmet load hour. If 500 zones all fail to meet their setpoint in one hour, it’s till one unmet load hour.<o:p></o:p></span></p><p style='mso-margin-top-alt:0in;margin-right:0in;margin-bottom:0in;margin-left:.5in;margin-bottom:.0001pt;text-indent:-.25in;mso-list:l0 level1 lfo2'><![if !supportLists]><span style='font-size:11.0pt;font-family:Symbol;color:#1F497D'><span style='mso-list:Ignore'>·<span style='font:7.0pt "Times New Roman"'> </span></span></span><![endif]><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D'>Add all such hours in a year to obtain your total unmet load hours, which cannot exceed 8,760.<o:p></o:p></span></p><p style='margin-bottom:0in;margin-bottom:.0001pt'><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D'>I am now modeling a hotel with:<o:p></o:p></span></p><p style='mso-margin-top-alt:0in;margin-right:0in;margin-bottom:0in;margin-left:.5in;margin-bottom:.0001pt;text-indent:-.25in;mso-list:l0 level1 lfo2'><![if !supportLists]><span style='font-size:11.0pt;font-family:Symbol;color:#1F497D'><span style='mso-list:Ignore'>·<span style='font:7.0pt "Times New Roman"'> </span></span></span><![endif]><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D'>“Massive” wall elements in the lower floors with moderate amounts of glass, “lightweight” construction in the upper floors with a lot of glass<o:p></o:p></span></p><p style='mso-margin-top-alt:0in;margin-right:0in;margin-bottom:0in;margin-left:.5in;margin-bottom:.0001pt;text-indent:-.25in;mso-list:l0 level1 lfo2'><![if !supportLists]><span style='font-size:11.0pt;font-family:Symbol;color:#1F497D'><span style='mso-list:Ignore'>·<span style='font:7.0pt "Times New Roman"'> </span></span></span><![endif]><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D'>Occupancy schedules that are all over the map for Office, Assembly / Meeting Rooms, Kitchen & Restaurant, and Guest Rooms<o:p></o:p></span></p><p style='mso-margin-top-alt:0in;margin-right:0in;margin-bottom:0in;margin-left:.5in;margin-bottom:.0001pt;text-indent:-.25in;mso-list:l0 level1 lfo2'><![if !supportLists]><span style='font-size:11.0pt;font-family:Symbol;color:#1F497D'><span style='mso-list:Ignore'>·<span style='font:7.0pt "Times New Roman"'> </span></span></span><![endif]><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D'>Individual HVAC systems for almost every occupancy type.<o:p></o:p></span></p><p style='mso-margin-top-alt:0in;margin-right:0in;margin-bottom:0in;margin-left:.5in;margin-bottom:.0001pt;text-indent:-.25in;mso-list:l0 level1 lfo2'><![if !supportLists]><span style='font-size:11.0pt;font-family:Symbol;color:#1F497D'><span style='mso-list:Ignore'>·<span style='font:7.0pt "Times New Roman"'> </span></span></span><![endif]><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D'>Presentation to all points of the compass, especially the Guest Tower, which is a 16-sided (roughly cylindrical) tower<o:p></o:p></span></p><p><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D'>This model is making my life very difficult trying to get unmet load hours below 300! As I think about why that is happening, it strikes me that the combination of mass, schedules and orientations are spreading the unmet loads around to different hours than is normal for many buildings. Can any of you share your thoughts about that perspective?<o:p></o:p></span></p><p><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D'>Thanks!<o:p></o:p></span></p><p class=MsoNormal style='mso-margin-top-alt:auto'><b><span style='color:#1F497D'>ASHRAE 90.1-2007<o:p></o:p></span></b></p><p class=MsoNormal style='text-autospace:none'><b><i><span style='font-size:10.0pt;font-family:TimesNewRomanPS-BoldItalicMT'>unmet load hour: </span></i></b><span style='font-size:10.0pt;font-family:TimesNewRomanPSMT'>an hour in which one or more zones is outside of the thermostat setpoint range.</span><o:p></o:p></p><p class=MsoNormal><o:p> </o:p></p><p class=MsoNormal><o:p> </o:p></p><p class=MsoNormal><img border=0 width=336 height=192 id="Picture_x0020_1" src="cid:image001.jpg@01CCB0E6.FD84D790" alt="Description: Description: BPT BizCard JVDII Updated"><o:p></o:p></p><p class=MsoNormal><b><span style='font-size:10.0pt'><o:p> </o:p></span></b></p><p class=MsoNormal><span style='font-size:10.0pt'>The real measure of a person’s wealth is how much they’re worth after losing all their money.</span><o:p></o:p></p><p class=MsoNormal><o:p> </o:p></p></div></body></html>