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<p class=MsoNormal>Dear All,<o:p></o:p></p>
<p class=MsoNormal><o:p> </o:p></p>
<p class=MsoNormal style='text-autospace:none'>I would like some guidance concerning
methodologies for systematically meeting unmet hour requirements as indicated in
ASHRAE 90.1-2004 Appendix G3.1.2.2. When all building systems are believed to
be correctly entered and unmet hours are out of range. I know I can make
certain changes to this model to obtain less than 300 unmet hours. Is there
any unspoken hierarchy of steps to input changes? Or is it all just guesswork?
Is there anything that is a no-no and should not be changed? Specifically, I
have a project in which the building energy management system allows cooling
when the temperature is above 55<span style='font-size:13.0pt;font-family:"Arial","sans-serif"'>°</span>F
leading to several thousand unmet hours for this heating dominated building
with unusually high insulation and solar transmittance values and way oversized
existing equipment. If I making cooling available year round then gone, all
better. Of course there is that graph that shows how cooling in the winter is
over half the cooling in used in summertime. Or should I go through each zone
and systematically change occupancies, equipment wattages, outside airflows,
bogus baseboard heating (anything else I can fit in here) and then do several
hundred iterations of simulations until someday I may finally have under 300
unmet hours for this … standard. Do I even need to meet this 300 hours,
for LEED purposes I would have to, correct?<o:p></o:p></p>
<p class=MsoNormal style='text-autospace:none'><o:p> </o:p></p>
<p class=MsoNormal style='text-autospace:none'>Yours thoughts, PLEASE?<span
style='font-size:8.5pt;font-family:"MS Shell Dlg","sans-serif"'><o:p></o:p></span></p>
<p class=MsoNormal><o:p> </o:p></p>
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