<p>Hi james<br>
Is it possible to relax your setpoints in proposed and baseline whilst still meeting A55 requirements? <br>
Would this help?<br>
Chris</p>
<div class="gmail_quote">On 2 Dec 2011 14:32, "Jim Dirkes" <<a href="mailto:jim@buildingperformanceteam.com">jim@buildingperformanceteam.com</a>> wrote:<br type="attribution"><blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex">
<div lang="EN-US" link="blue" vlink="purple"><div><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….<u></u><u></u></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:<u></u><u></u></span></p>
<p style="margin-right:0in;margin-bottom:0in;margin-left:.5in;margin-bottom:.0001pt"><u></u><span style="font-size:11.0pt;font-family:Symbol;color:#1f497d"><span>·<span style="font:7.0pt "Times New Roman""> </span></span></span><u></u><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.<u></u><u></u></span></p>
<p style="margin-right:0in;margin-bottom:0in;margin-left:.5in;margin-bottom:.0001pt"><u></u><span style="font-size:11.0pt;font-family:Symbol;color:#1f497d"><span>·<span style="font:7.0pt "Times New Roman""> </span></span></span><u></u><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.<u></u><u></u></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:<u></u><u></u></span></p><p style="margin-right:0in;margin-bottom:0in;margin-left:.5in;margin-bottom:.0001pt">
<u></u><span style="font-size:11.0pt;font-family:Symbol;color:#1f497d"><span>·<span style="font:7.0pt "Times New Roman""> </span></span></span><u></u><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<u></u><u></u></span></p>
<p style="margin-right:0in;margin-bottom:0in;margin-left:.5in;margin-bottom:.0001pt"><u></u><span style="font-size:11.0pt;font-family:Symbol;color:#1f497d"><span>·<span style="font:7.0pt "Times New Roman""> </span></span></span><u></u><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<u></u><u></u></span></p>
<p style="margin-right:0in;margin-bottom:0in;margin-left:.5in;margin-bottom:.0001pt"><u></u><span style="font-size:11.0pt;font-family:Symbol;color:#1f497d"><span>·<span style="font:7.0pt "Times New Roman""> </span></span></span><u></u><span style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1f497d">Individual HVAC systems for almost every occupancy type.<u></u><u></u></span></p>
<p style="margin-right:0in;margin-bottom:0in;margin-left:.5in;margin-bottom:.0001pt"><u></u><span style="font-size:11.0pt;font-family:Symbol;color:#1f497d"><span>·<span style="font:7.0pt "Times New Roman""> </span></span></span><u></u><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<u></u><u></u></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?<u></u><u></u></span></p>
<p><span style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1f497d">Thanks!<u></u><u></u></span></p><p class="MsoNormal"><b><span style="color:#1f497d">ASHRAE 90.1-2007<u></u><u></u></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><u></u><u></u></p>
<p class="MsoNormal"><u></u> <u></u></p><p class="MsoNormal"><u></u> <u></u></p><p class="MsoNormal"><img width="336" height="192" src="cid:image003.jpg@01CCB0D5.51638120" alt="Description: Description: BPT BizCard JVDII Updated"><u></u><u></u></p>
<p class="MsoNormal"><b><span style="font-size:10.0pt"><u></u> <u></u></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><u></u><u></u></p>
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