<table cellspacing="0" cellpadding="0" border="0" ><tr><td valign="top" style="font: inherit;"><DIV>ASHU:</DIV>
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<DIV>Try increasing the throttling range on your thermostats.</DIV>
<DIV> </DIV>
<DIV>John Aulbach<BR><BR>--- On <B>Fri, 6/19/09, ashu gupta <I><kce2@kamalcogentenergy.com></I></B> wrote:<BR></DIV>
<BLOCKQUOTE style="PADDING-LEFT: 5px; MARGIN-LEFT: 5px; BORDER-LEFT: rgb(16,16,255) 2px solid"><BR>From: ashu gupta <kce2@kamalcogentenergy.com><BR>Subject: [Equest-users] Unmet Load Hours<BR>To: equest-users@lists.onebuilding.org<BR>Date: Friday, June 19, 2009, 7:03 AM<BR><BR>
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<P class=MsoNormal><FONT face=Arial size=2><SPAN style="FONT-SIZE: 10pt; FONT-FAMILY: Arial">Hi,</SPAN></FONT></DIV>
<P class=MsoNormal><FONT face=Arial size=2><SPAN style="FONT-SIZE: 10pt; FONT-FAMILY: Arial"> </SPAN></FONT></DIV>
<P class=MsoNormal><FONT face=Arial size=2><SPAN style="FONT-SIZE: 10pt; FONT-FAMILY: Arial">I am doing an energy model for a LEED USGBC project. In this project I am facing a problem which is described below:</SPAN></FONT></DIV>
<P class=MsoNormal><FONT face=Arial size=2><SPAN style="FONT-SIZE: 10pt; FONT-FAMILY: Arial"> </SPAN></FONT></DIV>
<P class=MsoNormal><FONT face=Arial size=2><SPAN style="FONT-SIZE: 10pt; FONT-FAMILY: Arial">In Proposed case the total unmet heating load hours (from the output report of SS-R) are 36, and “</SPAN></FONT><B><FONT face=Arial size=1><SPAN style="FONT-WEIGHT: bold; FONT-SIZE: 9pt; FONT-FAMILY: Arial">PERCENT OF HOURS ANY SYSTEM ZONE OUTSIDE OF THROTTLING RANGE = 0.2.” </SPAN></FONT></B><FONT face=Arial size=2><SPAN style="FONT-SIZE: 10pt; FONT-FAMILY: Arial">as shown in the BEPU report. Please note that the 36 unmet heat load hours are total of all conditioned zones (approx 30 zones)</SPAN></FONT></DIV>
<P class=MsoNormal><FONT face=Arial size=2><SPAN style="FONT-SIZE: 10pt; FONT-FAMILY: Arial"> </SPAN></FONT></DIV>
<P class=MsoNormal><FONT face=Arial size=2><SPAN style="FONT-SIZE: 10pt; FONT-FAMILY: Arial">In Baseline case the total unmet load hours (which coming from the output report of SS-R) are 112 and “<B><SPAN style="FONT-WEIGHT: bold">PERCENT OF HOURS ANY SYSTEM ZONE OUTSIDE OF THROTTLING RANGE = 0.5</SPAN></B>” as shown in the BEPU report. Again the 112 unmet heat load hours are total of all conditioned zones (approx 30 zones).</SPAN></FONT></DIV>
<P class=MsoNormal><FONT face=Arial size=2><SPAN style="FONT-SIZE: 10pt; FONT-FAMILY: Arial"> </SPAN></FONT></DIV>
<P class=MsoNormal><FONT face=Arial size=2><SPAN style="FONT-SIZE: 10pt; FONT-FAMILY: Arial">Per USGBC the unmet load hours may not be exceed 300 hours (which is OK in our case) for either the Baseline or Proposed design. And the difference in unmet load hours between the baseline and proposed design must be no greater than 50. But in our model difference is greater than 50. So anyone please guide me that how can I bring down this number?</SPAN></FONT></DIV>
<P class=MsoNormal><FONT face=Arial size=2><SPAN style="FONT-SIZE: 10pt; FONT-FAMILY: Arial"> </SPAN></FONT></DIV>
<P class=MsoNormal><FONT face=Arial size=2><SPAN style="FONT-SIZE: 10pt; FONT-FAMILY: Arial">Currently here is how I am trying to bring down the unmet load hours in the baseline model. I am increasing maximum heating rate (window shown below) in these unmet zone (from Zero as default) to a value which is the maximum heat load for that zone (from SS-R in output file).</SPAN></FONT></DIV>
<P class=MsoNormal><FONT face=Arial size=2><SPAN style="FONT-SIZE: 10pt; FONT-FAMILY: Arial"> </SPAN></FONT></DIV>
<P class=MsoNormal><FONT face=Arial size=2><SPAN style="FONT-SIZE: 10pt; FONT-FAMILY: Arial">Note: That this is a LEED CS project and system are not designed. To keep apples to apples I am then going back to the proposed model and adding the same maximum heating rate to the same zones. Is this the right approach?</SPAN></FONT></DIV>
<P class=MsoNormal><FONT face=Arial size=2><SPAN style="FONT-SIZE: 10pt; FONT-FAMILY: Arial"> </SPAN></FONT></DIV>
<P class=MsoNormal><FONT face=Arial size=2><SPAN style="FONT-SIZE: 10pt; FONT-FAMILY: Arial">Can anyone else suggest a different approach?</SPAN></FONT></DIV>
<P class=MsoNormal><FONT face=Arial size=2><SPAN style="FONT-SIZE: 10pt; FONT-FAMILY: Arial"> </SPAN></FONT></DIV>
<P class=MsoNormal><FONT face=Arial size=2><SPAN style="FONT-SIZE: 10pt; FONT-FAMILY: Arial"><IMG id=_x0000_i1025 height=546 src="cid:1.501596790@web52807.mail.re2.yahoo.com" width=741></SPAN></FONT></DIV>
<P class=MsoNormal><FONT face=Arial size=2><SPAN style="FONT-SIZE: 10pt; FONT-FAMILY: Arial"> </SPAN></FONT></DIV>
<P class=MsoNormal><FONT face=Arial size=2><SPAN style="FONT-SIZE: 10pt; FONT-FAMILY: Arial">Any help would be greatly appreciated!</SPAN></FONT></DIV>
<P class=MsoNormal><FONT face=Arial size=2><SPAN style="FONT-SIZE: 10pt; FONT-FAMILY: Arial"> </SPAN></FONT></DIV>
<P class=MsoNormal><FONT face=Arial size=2><SPAN style="FONT-SIZE: 10pt; FONT-FAMILY: Arial">Thanks</SPAN></FONT></DIV>
<P class=MsoNormal><FONT face="Times New Roman" size=3><SPAN style="FONT-SIZE: 12pt">Ashu</SPAN></FONT></DIV></DIV></DIV><BR>-----Inline Attachment Follows-----<BR><BR>
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