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<p class=MsoNormal><span style='color:#1F497D'>Lars, <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'>I still haven’t run this
to see the results, but the gist of the responses I received is this;
First determine the daily usage per person for dorms or per unit for
apartments. Multiply that by the number of residents/units, then divide by the
number of minutes in a day to get the GPM value. The other key is that the
fractional schedule should then be set up so that all of its values add up to
1.0. My methodology missed the boat on both of these. <o:p></o:p></span></p>
<p class=MsoNormal><span style='color:#1F497D'>All of the usage values can be
found in the APSE manual, which also has a method for accounting for low-flow
fixtures that I need to look into since it can be factored into EAc1 calcs. <o:p></o:p></span></p>
<p class=MsoNormal><span style='color:#1F497D'>Here is a good paper on
fractional schedules for residential occupancy. <a
href="http://www.fsec.ucf.edu/en/publications/pdf/FSEC-RR-56-04.pdf">http://www.fsec.ucf.edu/en/publications/pdf/FSEC-RR-56-04.pdf</a><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'>tb<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'> <o:p></o:p></span></p>
<p class=MsoNormal><span style='color:#1F497D'><o:p> </o:p></span></p>
<div>
<div style='border:none;border-top:solid #B5C4DF 1.0pt;padding:3.0pt 0in 0in 0in'>
<p class=MsoNormal><b><span style='font-size:10.0pt;font-family:"Tahoma","sans-serif"'>From:</span></b><span
style='font-size:10.0pt;font-family:"Tahoma","sans-serif"'> Lars Fetzek
[mailto:lfetzek@phoenixeng.us] <br>
<b>Sent:</b> Tuesday, September 15, 2009 3:32 PM<br>
<b>To:</b> Tom Butler; equest-users@lists.onebuilding.org<br>
<b>Subject:</b> RE: [Equest-users] DHW Process Flow<o:p></o:p></span></p>
</div>
</div>
<p class=MsoNormal><o:p> </o:p></p>
<p class=MsoNormal><span style='font-size:10.0pt;font-family:"Arial","sans-serif";
color:blue'>Tom and eQuesters,</span><span style='font-size:12.0pt;font-family:
"Times New Roman","serif"'><o:p></o:p></span></p>
<p class=MsoNormal><span style='font-size:12.0pt;font-family:"Times New Roman","serif"'> <o:p></o:p></span></p>
<p class=MsoNormal><span style='font-size:12.0pt;font-family:"Times New Roman","serif"'>
</span><span style='font-size:10.0pt;font-family:"Arial","sans-serif";
color:blue'>Did anyone answer your question? I'll need to know this
conversion, too, for my project.</span><span style='font-size:12.0pt;
font-family:"Times New Roman","serif"'><o:p></o:p></span></p>
<p class=MsoNormal><span style='font-size:12.0pt;font-family:"Times New Roman","serif"'> <o:p></o:p></span></p>
<p class=MsoNormal><span style='font-size:10.0pt;font-family:"Arial","sans-serif";
color:blue'>Lars Fetzek, EI</span><span style='font-size:12.0pt;font-family:
"Times New Roman","serif"'><o:p></o:p></span></p>
<p class=MsoNormal><span style='font-size:10.0pt;font-family:"Arial","sans-serif";
color:blue'>Phoenix Engineering Group</span><span style='font-size:12.0pt;
font-family:"Times New Roman","serif"'><o:p></o:p></span></p>
<p class=MsoNormal><span style='font-size:10.0pt;font-family:"Arial","sans-serif";
color:blue'>Tampa, Florida</span><span style='font-size:12.0pt;font-family:
"Times New Roman","serif"'><o:p></o:p></span></p>
<p class=MsoNormal><span style='font-size:12.0pt;font-family:"Times New Roman","serif"'><o:p> </o:p></span></p>
<div class=MsoNormal align=center style='text-align:center'><span
style='font-size:12.0pt;font-family:"Times New Roman","serif"'>
<hr size=2 width="100%" align=center>
</span></div>
<p class=MsoNormal style='margin-bottom:12.0pt'><b><span style='font-size:10.0pt;
font-family:"Tahoma","sans-serif"'>From:</span></b><span style='font-size:10.0pt;
font-family:"Tahoma","sans-serif"'> equest-users-bounces@lists.onebuilding.org
[mailto:equest-users-bounces@lists.onebuilding.org] <b>On Behalf Of </b>Tom
Butler<br>
<b>Sent:</b> Wednesday, August 19, 2009 3:14 PM<br>
<b>To:</b> equest-users@lists.onebuilding.org<br>
<b>Subject:</b> [Equest-users] DHW Process Flow</span><span style='font-size:
12.0pt;font-family:"Times New Roman","serif"'><o:p></o:p></span></p>
<p class=MsoNormal>I am modeling a dormitory for EAc1 in version 3.60.
I’ve calculated the peak DHW load by using the flow rate of all of the
fixtures on the hot water loop (410 gpm). I have a schedule that accounts for
the vacant periods during the breaks and reduced usage in the summer when the
building is partially occupied. When I use the 410 gpm rate as the process flow
the energy consumption for hot water is astronomically high. <o:p></o:p></p>
<p class=MsoNormal><o:p> </o:p></p>
<p class=MsoNormal>What fact do I need to apply to the calculated flow rate to
get realistic results?<o:p></o:p></p>
<p class=MsoNormal><o:p> </o:p></p>
<p class=MsoNormal>Thanks<o:p></o:p></p>
<p class=MsoNormal style='mso-margin-top-alt:auto;mso-margin-bottom-alt:auto'><b><span
style='font-size:12.0pt;font-family:"Garamond","serif";color:black'>Tom Butler</span></b><span
style='font-size:12.0pt;font-family:"Garamond","serif"'>, <b>LEED<sup><span
style='color:black'>®</span></sup><span style='color:black'> </span>AP</b><br>
<span style='color:black'>Direct Phone 404-253-1435 | Direct Fax 404-253-1335</span>
<o:p></o:p></span></p>
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