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<p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";
color:#1F497D'>The delta T G.3.1.2.8 is referring to a 20 degree delta between
room cooling setpoint and supply air temperature. For example:<o:p></o:p></span></p>
<p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";
color:#1F497D'><o:p> </o:p></span></p>
<p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";
color:#1F497D'>Room Cooling Setpoint = 75 °F <o:p></o:p></span></p>
<p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";
color:#1F497D'>20 °F delta from G.3.1.2.8 = -<u>20 °F</u> <o:p></o:p></span></p>
<p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";
color:#1F497D'>Supply Air Temperature = 55 °F <o:p></o:p></span></p>
<p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";
color:#1F497D'><o:p> </o:p></span></p>
<p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";
color:#1F497D'>A 20 degree fan delta T would be a MONSTER of a fan..<o:p></o:p></span></p>
<p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";
color:#1F497D'><o:p> </o:p></span></p>
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<p class=MsoNormal><span style='font-size:11.0pt;font-family:"Franklin Gothic Demi","sans-serif";
color:navy'>Robby Oylear,</span><span style='font-size:11.0pt;font-family:"Franklin Gothic Demi","sans-serif";
color:#004080'> </span><span style='font-size:11.0pt;font-family:"Franklin Gothic Demi","sans-serif";
color:navy'>LEED</span><span style='font-size:8.0pt;font-family:"Franklin Gothic Demi","sans-serif";
color:navy;position:relative;top:-2.0pt;mso-text-raise:2.0pt'>®</span><span
style='font-size:11.0pt;font-family:"Franklin Gothic Demi","sans-serif";
color:navy'> AP</span><span style='font-size:11.0pt;font-family:"Franklin Gothic Demi","sans-serif";
color:#004080'><o:p></o:p></span></p>
<p class=MsoNormal><i><span style='font-size:10.0pt;font-family:"Calibri","sans-serif";
color:navy'>Mechanical Engineer<o:p></o:p></span></i></p>
<p class=MsoNormal><span style='font-size:10.0pt;font-family:"Calibri","sans-serif";
color:navy'>direct: 206.788.4571<o:p></o:p></span></p>
<p class=MsoNormal><i><span style='font-size:10.0pt;font-family:"Calibri","sans-serif";
color:navy'>cell: 206.354.2721<o:p></o:p></span></i></p>
<p class=MsoNormal><u><span style='font-size:7.5pt;font-family:"Arial","sans-serif";
color:blue'>www.</span></u><span style='font-size:8.0pt;font-family:"Arial","sans-serif";
color:#1F497D'><a href="http://www.rushingco.com/"
title="blocked::http://www.rushingco.com/"><span style='font-size:7.5pt'>rushingco.com</span></a></span><span
style='font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D'><o:p></o:p></span></p>
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<p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";
color:#1F497D'><o:p> </o:p></span></p>
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<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"'> equest-users-bounces@lists.onebuilding.org
[mailto:equest-users-bounces@lists.onebuilding.org] <b>On Behalf Of </b>Chan,
Walter<br>
<b>Sent:</b> Thursday, September 17, 2009 2:50 PM<br>
<b>To:</b> Equest-users@lists.onebuilding.org<br>
<b>Subject:</b> [Equest-users] G.3.1.2.8 Design Air Flow<o:p></o:p></span></p>
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<p class=MsoNormal><o:p> </o:p></p>
<p class=MsoNormal><span style='font-size:10.0pt;font-family:"Arial","sans-serif"'>When
I use delta T 20F for supply fan, the CFM stays the same and the cooling load
is up 60% and heating load is slightly lower. Any clue?<o:p></o:p></span></p>
<p class=MsoNormal><span style='font-size:10.0pt;font-family:"Arial","sans-serif"'><o:p> </o:p></span></p>
<p class=MsoNormal><span style='font-size:10.0pt;font-family:"Arial","sans-serif"'>Is
there a correct way to put in the Delta T 20F (after I set default and not
using fan static pressure) and eQuest will calculate the correct CFM?<o:p></o:p></span></p>
<p class=MsoNormal><span style='font-size:10.0pt;font-family:"Arial","sans-serif"'><o:p> </o:p></span></p>
<p class=MsoNormal><span style='font-size:10.0pt;font-family:"Arial","sans-serif"'>Thanks
for the help.<o:p></o:p></span></p>
<p class=MsoNormal><span style='font-size:10.0pt;font-family:"Arial","sans-serif"'><o:p> </o:p></span></p>
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<td width=626 style='width:469.25pt;padding:0in 5.75pt 0in 5.75pt;height:
49.95pt'>
<p class=MsoNormal style='line-height:115%'><b><span style='font-size:10.0pt;
line-height:115%;color:#244061'>Walter W. Chan, P.E., LEED AP</span></b><span
style='font-size:10.0pt;line-height:115%'> <o:p></o:p></span></p>
<p class=MsoNormal style='line-height:115%'><span style='font-size:10.0pt;
line-height:115%'><o:p> </o:p></span></p>
<p class=MsoNormal style='line-height:115%'><span style='font-size:10.0pt;
line-height:115%'>CAS Group</span><span style='font-size:10.0pt;line-height:
115%;font-family:"Arial","sans-serif";color:black'><o:p></o:p></span></p>
<p class=MsoNormal style='line-height:115%'><span style='font-size:10.0pt;
line-height:115%;color:#7F7F7F'>1341 North Delaware Ave., Suite 500 |
Philadelphia, PA 19125<o:p></o:p></span></p>
<p class=MsoNormal style='line-height:115%'><b><span style='font-size:10.0pt;
line-height:115%;color:#7F7F7F'>T: </span></b><span style='font-size:10.0pt;
line-height:115%;color:#7F7F7F'>215.427.8711 | <b>F: </b>215.427.8710</span><span
style='font-size:10.0pt;line-height:115%;font-family:"Arial","sans-serif";
color:black'><o:p></o:p></span></p>
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<p class=MsoNormal><o:p> </o:p></p>
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