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<p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";
color:#1F497D'>Try Q=500*gpm*dT<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><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>Verena
Kindl<br>
<b>Sent:</b> Friday, September 04, 2009 9:11 AM<br>
<b>To:</b> equest-users@lists.onebuilding.org<br>
<b>Subject:</b> [Equest-users] capacity check<o:p></o:p></span></p>
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<p class=MsoNormal><o:p> </o:p></p>
<p class=MsoNormal><span lang=DE style='font-size:10.0pt;font-family:"Arial","sans-serif";
color:navy'>Hi equester,<o:p></o:p></span></p>
<p class=MsoNormal><span lang=DE style='font-size:10.0pt;font-family:"Arial","sans-serif";
color:navy'><o:p> </o:p></span></p>
<p class=MsoNormal><span lang=EN-GB style='font-size:10.0pt;font-family:"Arial","sans-serif";
color:navy'>i was checking my results fort he chilled water loop. I entered a
delta T of </span><span lang=EN-GB style='font-size:10.0pt;font-family:"Arial","sans-serif";
color:red'>11,8 F</span><span lang=EN-GB style='font-size:10.0pt;font-family:
"Arial","sans-serif";color:navy'> and a capacity of 21 MBTU/ h and in the PV-A
report I find also 21 MBTU/h and a flow of 3556.5 gpm (593 lb/s). I
checked the delta T using the formula Q=m*c*delta T <o:p></o:p></span></p>
<p class=MsoNormal><span lang=DE style='font-size:10.0pt;font-family:"Arial","sans-serif";
color:navy'>Delta T = Q/(m*c) <o:p></o:p></span></p>
<p class=MsoNormal><span lang=DE style='font-size:10.0pt;font-family:"Arial","sans-serif";
color:navy'>Delta T = 21*e6 Btu/h / (593 lb/s*3600s/h* 1 Btu/lbF ) = </span><span
lang=DE style='font-size:10.0pt;font-family:"Arial","sans-serif";color:red'>9,8
F <o:p></o:p></span></p>
<p class=MsoNormal><span lang=DE style='font-size:10.0pt;font-family:"Arial","sans-serif";
color:red'><o:p> </o:p></span></p>
<p class=MsoNormal><span lang=EN-GB style='font-size:10.0pt;font-family:"Arial","sans-serif"'>The
mass flow is too high and the delta T too low but i have not specified a
massflow for the loop so it was up to equest sizing the massflow. Do you get
appropriate massflows ? I tried it with other delta T but the temperature
difference is always too low and the massflow to high. Sizing option is
primary. Any idea? Have a nice weekend.<o:p></o:p></span></p>
<p class=MsoNormal><span lang=EN-GB style='font-size:10.0pt;font-family:"Arial","sans-serif"'><o:p> </o:p></span></p>
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