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<p class=MsoNormal><span style='font-size:12.0pt'>I have a question regarding
the way unmet load hours are calculated in eQuest. I have received the following
comments from the USGBC reviewer after submitting my energy model. <o:p></o:p></span></p>
<p class=MsoNormal><span style='font-size:12.0pt'><o:p> </o:p></span></p>
<p class=MsoNormal><i><span style='font-size:10.0pt;font-family:"Verdana","sans-serif"'>1.
The response narrative to preliminary comment 1 states that the SS-R reports
have been used to determine the number of unmet load hours for each case
however this method does not take into account coincident hours. Additionally,
the number of hours any system outside of throttling range is not the number of
hours the HVAC system is in operation but rather it is the number of hours each
zone exists during the building simulation, or 8,760 hours. Therefore the
number of unmet load hours is 333 in the Baseline case and 508 in the Proposed
case and the simulation does not meet the requirements of Section G3.1.2.2. If
appealing this credit please revise both cases using the prescriptions of
Section G3.1.2.2 until the number of unmet load hours is less than 300 for both
cases and the number in the Proposed case does not exceed the number in the
Baseline case by more than 50.</span></i><span style='font-size:12.0pt'><o:p></o:p></span></p>
<p class=MsoNormal><span style='font-size:12.0pt'><o:p> </o:p></span></p>
<p class=MsoNormal><span style='font-size:12.0pt'>I thought the unmet load
hours were calculated only during times when the fans are actually running in
the simulation. This is why I always pull my unmet hours from the SS-R report,
adding up the unmet hours for both cooling and heating for each individual
unit. I can also go into the SS-E report and calculate the number of hours my
fans are actually running and then calculate the total number of hours by using
the percentage of hours outside the throttling range given in the BEPS report. <o:p></o:p></span></p>
<p class=MsoNormal><span style='font-size:12.0pt'><o:p> </o:p></span></p>
<p class=MsoNormal><span style='font-size:12.0pt'>If you calculate the hours in
the manner the reviewer has outlined then there is no way to show which hours
are heating and which are cooling and you have to provide that breakdown in the
EAc1 template. <o:p></o:p></span></p>
<p class=MsoNormal><span style='font-size:12.0pt'><o:p> </o:p></span></p>
<p class=MsoNormal><span style='font-size:12.0pt'>Any input on this topic would
be greatly appreciated.<o:p></o:p></span></p>
<p class=MsoNormal><span style='font-size:12.0pt'><o:p> </o:p></span></p>
<p class=MsoNormal><span style='font-size:12.0pt'>Thanks in advance.<o:p></o:p></span></p>
<p class=MsoNormal><span style='font-size:12.0pt'><o:p> </o:p></span></p>
<p class=MsoNormal><span style='font-size:12.0pt'><o:p> </o:p></span></p>
<p class=MsoNormal><b><span style='font-size:12.0pt;font-family:"BankGothic Lt BT","sans-serif"'>BRETT
M. WEST</span></b><b><span style='font-size:12.0pt;font-family:"BankGothic Lt BT","sans-serif"'><o:p></o:p></span></b></p>
<p class=MsoNormal><o:p> </o:p></p>
<p class=MsoNormal><span style='font-size:12.0pt;font-family:"BankGothic Lt BT","sans-serif"'>RMF
ENGINEERING</span><b><span style='font-size:12.0pt;font-family:"BankGothic Lt BT","sans-serif"'><o:p></o:p></span></b></p>
<p class=MsoNormal><span style='font-size:10.0pt;font-family:"BankGothic Lt BT","sans-serif"'>T:
843.971.9639 ext. 1499</span><span style='font-family:"BankGothic Lt BT","sans-serif"'><o:p></o:p></span></p>
<p class=MsoNormal><span style='font-size:10.0pt;font-family:"BankGothic Lt BT","sans-serif"'>F:
843.971.9641</span><span style='font-family:"BankGothic Lt BT","sans-serif"'><o:p></o:p></span></p>
<p class=MsoNormal><span style='font-family:"BankGothic Lt BT","sans-serif"'><a
href="mailto:bwest@rmf.com"><span style='font-size:10.0pt;color:blue'>bwest@rmf.com</span></a></span><span
style='font-family:"BankGothic Md BT","sans-serif"'><o:p></o:p></span></p>
<p class=MsoNormal><o:p> </o:p></p>
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