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<p class=MsoNormal><span style='color:#1F497D'>Thanks Brian,<o:p></o:p></span></p>
<p class=MsoNormal><span style='color:#1F497D'>But I’d already examined
LS-C, LS-D, SS-C and SS-D. As one would expect, LS-C and LS-D are the
same for both models. SS-D, however, is not. I guess what I don’t
understand is what eQuest considers a “load” to be. I consider
“load” to be the requirements of the space (including envelope,
occupants, and OA), and none of those things have changed between my
models. The only thing that changes is what system is used to meet the
load. <o:p></o:p></span></p>
<p class=MsoNormal><span style='color:#1F497D'>SS-D only has a monthly
breakdown – but doesn’t explain why the loads are different.<o:p></o:p></span></p>
<p class=MsoNormal><span style='color:#1F497D'><o:p> </o:p></span></p>
<p class=MsoNormal><span style='color:#1F497D'>Thanks,<o:p></o:p></span></p>
<p class=MsoNormal><span style='color:#1F497D'>Katherine<o:p></o:p></span></p>
<p class=MsoNormal><span style='color:#1F497D'><o:p> </o:p></span></p>
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<p class=MsoNormal><b><span lang=EN-US style='font-size:10.0pt;font-family:
"Tahoma","sans-serif";color:windowtext'>From:</span></b><span lang=EN-US
style='font-size:10.0pt;font-family:"Tahoma","sans-serif";color:windowtext'>
Brian Fountain [mailto:greensimbf@gmail.com] <b>On Behalf Of </b>Brian Fountain<br>
<b>Sent:</b> November-15-11 3:15 PM<br>
<b>To:</b> Katherine Louman-Gardiner<br>
<b>Subject:</b> Re: [Bldg-sim] eQuest - Heating/Cooling Loads<o:p></o:p></span></p>
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<p class=MsoNormal><o:p> </o:p></p>
<p class=MsoNormal>Look at the SS-D and LS-C reports. SS-D shows the peak
heating & cooling loads with outdoor air, LS-C shows the same without
outdoor air ... but will show components so you can determine where the
difference is. <br>
<br>
<br>
On 11/15/2011 5:57 PM, Katherine Louman-Gardiner wrote: <o:p></o:p></p>
<p class=MsoNormal>Hi all,<o:p></o:p></p>
<p class=MsoNormal>I’m not sure I understand how eQuest calculates the
heating/cooling equipment loads.<o:p></o:p></p>
<p class=MsoNormal>I’ve built two models with identical envelopes and
internal loads etc, and OA supply. In model A, we have a boiler and
chiller on hot and chilled water loops and a four-pipe fan coil air-side
system. In model B, we’re using an air cooled Heat Pump and
two-pipe fan coils.<o:p></o:p></p>
<p class=MsoNormal>In report PS-C for model A, the sum heat load is -29.6 MBTU,
whereas for model B, the sum heat load is -130.2 MBTU. I understand that
the fuel use should be very different, but I don’t know why the load is
so different between the models. Shouldn’t the heating energy
delivered to the spaces be the same in both cases? Why does the Heat Pump
system have a load that is so much higher than its counterpart?<o:p></o:p></p>
<p class=MsoNormal> <o:p></o:p></p>
<p class=MsoNormal>Similarly, in report SS-E, January has 110 Heating load
hours for Model A, and 385 Heating load hours for Model B. Again,
shouldn’t the loads be the same between the two models? <o:p></o:p></p>
<p class=MsoNormal> <o:p></o:p></p>
<p class=MsoNormal>Thanks in advance for the help,<o:p></o:p></p>
<p class=MsoNormal> <o:p></o:p></p>
<p class=MsoNormal>Katherine<o:p></o:p></p>
<p class=MsoNormal><span style='font-size:12.0pt;font-family:"Times New Roman","serif"'><br>
<br>
<br>
<o:p></o:p></span></p>
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