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<font style="FONT-SIZE: 10pt; FONT-FAMILY: tahoma"> <div>David, </div> <div>
There is a lot of speculation on this, and unfortunately I'm
going to add to it. </div> <div> </div> <div>At a recent
training, Marlin Addison explained that the denominator hours is equal
to the fan hours on on the SS-E report. </div> <div> </div> <div>In
DOE-2 Help file I found this definition within the BEPS REPORT on the
"Percent Hours...": </div> <div> </div> <div>"...is the
percentage of hours when the temperature in any conditioned zone is
outside the zone thermostat's throttling range. This is a measure of
the HVAC system's ability to hold thermostat setpoints." </div>
<div> </div> <div>Based on the "any conditioned zone" clause, I'd
speculate that the numerator is similar. In both cases, the
program is looking across the building for each hour to determine if any fan
is on and if any zone is out of range. </div> <div> </div> <div>
This procedure could be used to determine the percentage, but I dont have an
easy way to verify it... </div> <div> </div> <div> </div>
<div>Regards, </div> <div>Rich <br /> </div></font> <br />
<blockquote style="PADDING-RIGHT: 0px; PADDING-LEFT: 5px; MARGIN-LEFT: 5px;
BORDER-LEFT: #000000 2px solid; MARGIN-RIGHT: 0px">-----Original
Message----- <br />From: "David Dowling"
<David.Dowling@WestPlainsEngineering.com> <br />To:
<equest-users@lists.onebuilding.org> <br />Date: Wed, 27 May 2009
13:58:28 -0600 <br />Subject: [Equest-users] Hours outside Thrl-Range
<br /> <br /> <div class="Section1"> <div class="Normal"><font
face="Arial" size="2"><span style="FONT-SIZE: 10pt">Does any one know how
the “PERCENT OF HOURS ANY SYSTEM ZONE OUTSIDE OF THROTTLING RANGE” from
detailed output BEPS is calculated? I am assuming it is the maximum
total number of ours any given system zone is not within the throttling
range divided by 8760. If this is true, why can’t I seem to find the
total number of hours from any of the reports to give me this
percentage? Any information concerning this is greatly
appreciated.</span></font> </div> <div><b><font face="Arial"
color="navy" size="2"><span style="FONT-WEIGHT: bold; FONT-SIZE: 10pt;
COLOR: navy; FONT-FAMILY: Arial"><img id="_x0000_i1025" height="34"
src="cid:image001.jpg@01C9DED3.35E9F2C0" width="280" align="baseline"
border="0" /></span></font></b> </div> <div><strong><b><font
face="Arial" color="navy" size="2"><span style="FONT-SIZE: 10pt; COLOR:
navy; FONT-FAMILY: Arial">David Dowling</span></font></b></strong> </div>
<div><font face="Arial" size="2"><span style="FONT-SIZE: 10pt;
FONT-FAMILY: Arial">Mechanical Designer</span></font> </div> <div><b>
<i><font face="Arial" color="navy" size="2"><span style="FONT-WEIGHT: bold;
FONT-SIZE: 11pt; COLOR: navy; FONT-STYLE: italic; FONT-FAMILY: Arial">WEST
PLAINS ENGINEERING, INC.</span></font></i></b> </div> <div>1750 Rand
Road </div> <div>Rapid City, SD 57702 </div> <div><font
face="Arial" size="2"><span style="FONT-SIZE: 10pt; FONT-FAMILY: Arial">
Phone: (605) 348-7455 Fax: (605) 348-9445</span></font> </div>
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