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<div class=Section1>
<p class=MsoNormal><span style='color:#1F497D'>Hi Afaan,<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'>The first table below contains
the <u>sort</u> of information you will need to make a centrifugal EIR curve,
but as David says you’re lacking in the minimum # of data points. I
believe the bare minimum to extrapolate an accurate bi-quadratic curve would require
9 rows of data (minimum 3 PLR’s for a minimum 3 dT’s), though you
should probably use the maximum number of data entry points permitted when
allowing eQuest to determine the coefficients (20 per curve). <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'>dT is simply the difference
between the chilled and condenser water temps.<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’m not sure exactly what
we’re looking at in the second table, but it doesn’t look like data
for creating a curve... If you want to make CAP-FT and EIR-FT curves (and
if you don’t, that’s okay too – see below) you’ll need
a rep who understands and can provide you with “maximum capacity” (not
the designed capacity, or where PLR = 1.0) and power drawn under different conditions.
I’ve previously selected 5 CW temps and 4 CHW temps around and
including the design conditions being normalized to, totaling the maximum 20
data entry points we’re permitted to input. <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'>The attached email contains an
overview of materials you should review to understand the process of custom chiller
curve creation (includes a reference to the same EDR guideline David brings up below).
Once you feel comfortable understanding the required data collection described towards
the end of the referenced EDR chapter, you might do well to also read through a
fairly lengthy discussion on this list that I started: </span><span
style='color:#1F497D'>“Chiller Curves (oh boy!).” </span><span
style='color:#1F497D'> There, I eventually provided an illustrated
breakdown of each default curve and its function/implications, eventually realizing
and providing visuals of their combined effects analogous to what equipment reps
often provide for “chiller efficiency curves.” You should be
able to follow this discussion from start to finish, and should come away
knowing exactly what eQuest is doing “under the hood” moving
forward. Carol Gardner also provided a writeup within that discussion
that is similar to the EDR… oh I see she just posted it again =)!<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'>One final suggestion: Your
collected data suggests a possible pitfall – if you want to make the CAP-FT
and EIR-FT curves, you MUST gather data for multiple CHW temps, even if the
design should only ever call for 44 degree water to be produced. If you don’t
understand why, then honestly you need further review of what the curves are functionally
doing – see suggested reading above and attached. <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'>If you and your reps are struggling
with producing the data required to make CAP-FT and EIR-FT curves, it’s advisable
to stick with the defaults, and ensure your custom EIR-fPLR&dT curve
entries are all normalized to ARI rather than a design condition.<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'>Best of luck!<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'>~Nick<o:p></o:p></span></p>
<p class=MsoNormal><span style='color:#1F497D'><o:p> </o:p></span></p>
<div>
<p class=MsoNormal><span style='color:#1F497D'><img width=119 height=37
id="Picture_x0020_1" src="cid:image001.jpg@01CBB7B5.F6E5F3E0"
alt="cid:489575314@22072009-0ABB"></span><b><span style='font-family:"Stylus BT","sans-serif";
color:#2D4D5E'><o:p></o:p></span></b></p>
<p class=MsoNormal><b><span style='font-family:"Stylus BT","sans-serif";
color:#2D4D5E'><o:p> </o:p></span></b></p>
<p class=MsoNormal><b><span style='font-family:"Stylus BT","sans-serif";
color:#2D4D5E'>NICK CATON, E.I.T.</span></b><b><span style='font-size:12.0pt;
font-family:"Stylus BT","sans-serif";color:#2D4D5E'><o:p></o:p></span></b></p>
<p class=MsoNormal><span style='font-size:7.5pt;color:#CC9900'>PROJECT ENGINEER<o:p></o:p></span></p>
<p class=MsoNormal><span style='font-size:10.0pt;color:#2D4D5E'>Smith &
Boucher Engineers</span><span style='font-size:7.5pt;font-family:"Times New Roman","serif";
color:#CC9900'><o:p></o:p></span></p>
<p class=MsoNormal><span style='font-size:10.0pt;color:#2D4D5E'>25501 west
valley parkway<o:p></o:p></span></p>
<p class=MsoNormal><span style='font-size:10.0pt;color:#2D4D5E'>olathe ks 66061<o:p></o:p></span></p>
<p class=MsoNormal><span style='font-size:10.0pt;color:#2D4D5E'>direct 913
344.0036<o:p></o:p></span></p>
<p class=MsoNormal><span style='font-size:10.0pt;color:#2D4D5E'>fax 913
345.0617<o:p></o:p></span></p>
<p class=MsoNormal><span style='color:#1F497D'><a href="www.smithboucher.com"
title="blocked::www.smithboucher.com"><span style='font-size:10.0pt'>www.smithboucher.com</span></a></span><u><span
style='font-size:10.0pt;color:blue'> </span></u><span style='color:#1F497D'><o:p></o:p></span></p>
</div>
<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"'>
equest-users-bounces@lists.onebuilding.org
[mailto:equest-users-bounces@lists.onebuilding.org] <b>On Behalf Of </b>David
Eldridge<br>
<b>Sent:</b> Wednesday, January 19, 2011 7:38 AM<br>
<b>To:</b> equest-users@lists.onebuilding.org<br>
<b>Subject:</b> Re: [Equest-users] Constructing chiller part load curves<o:p></o:p></span></p>
</div>
</div>
<p class=MsoNormal><o:p> </o:p></p>
<p class=MsoNormal><span style='color:black'>You may want to run through this
document before you get too much further. Skip ahead to “Part
2” of the document.</span><o:p></o:p></p>
<p class=MsoNormal><span style='color:black'> </span><o:p></o:p></p>
<p class=MsoNormal><a
href="http://www.energydesignresources.com/media/2654/EDR_DesignGuidelines_%20HVAC_Simulation.pdf">http://www.energydesignresources.com/media/2654/EDR_DesignGuidelines_%20HVAC_Simulation.pdf</a><o:p></o:p></p>
<p class=MsoNormal><span style='color:black'> </span><o:p></o:p></p>
<p class=MsoNormal><span style='color:black'>In a nutshell – you should
acquire a few more data points to develop a more comprehensive matrix.
Right now your matrix would be equivalent to a line through the middle of
possible conditions, you need to extend your data set over a wider range of
water temperatures and load conditions.</span><o:p></o:p></p>
<p class=MsoNormal><span style='color:black'> </span><o:p></o:p></p>
<p class=MsoNormal><span style='color:black'>David</span><o:p></o:p></p>
<p class=MsoNormal><span style='color:black'> </span><o:p></o:p></p>
<div>
<p class=MsoNormal><u><span style='color:black'>
</span></u><o:p></o:p></p>
<p class=MsoNormal><span style='font-size:8.0pt;color:black'> </span><o:p></o:p></p>
<p class=MsoNormal><b><span style='color:#1F497D'>David S. Eldridge, Jr.</span><span
style='color:#244061'>, P</span><span style='color:#1F497D'>.</span><span
style='color:#244061'>E</span><span style='color:#1F497D'>.</span><span
style='color:#244061'>, LEED AP BD+C, BEMP, HBDP</span></b><o:p></o:p></p>
<p class=MsoNormal><span style='color:#1F497D'>Project Manager</span><o:p></o:p></p>
<p class=MsoNormal><span style='font-size:4.0pt;color:#1F497D'> </span><o:p></o:p></p>
<p class=MsoNormal><span style='color:#365F91'>Direct: (847) 316-92</span><span
style='color:#1F497D'>24</span><span style='color:#365F91'> | Fax: (</span><span
style='color:#1F497D'>847</span><span style='color:#365F91'>) </span><span
style='color:#1F497D'>328</span><span style='color:#365F91'>-</span><span
style='color:#1F497D'>4550</span><o:p></o:p></p>
<p class=MsoNormal><span style='color:black'><a
href="http://www.grummanbutkus.com">http://www.grummanbutkus.com</a></span><o:p></o:p></p>
<p class=MsoNormal><span style='font-size:10.0pt;color:#1F497D'> </span><o:p></o:p></p>
<p class=MsoNormal><b><span style='color:#244061'>Grumman/Butkus Associates</span></b><span
style='color:gray'> </span><span style='color:#365F91'>| 820 Davis Street,
Suite 300 | Evanston, IL 60201</span><o:p></o:p></p>
<p class=MsoNormal><span style='font-size:9.0pt;color:gray'>Energy Efficiency
Consultants and Sustainable Design Engineers</span><o:p></o:p></p>
<p class=MsoNormal><u><span style='color:black'>
</span></u><o:p></o:p></p>
</div>
<p class=MsoNormal><span style='color:black'> </span><o:p></o:p></p>
<div style='border:none;border-left:solid blue 1.5pt;padding:0in 0in 0in 4.0pt'>
<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"'> <a
href="mailto:equest-users-bounces@lists.onebuilding.org">equest-users-bounces@lists.onebuilding.org</a>
[mailto:<a href="mailto:equest-users-bounces@lists.onebuilding.org">equest-users-bounces@lists.onebuilding.org</a>]
<b>On Behalf Of </b>Afaan Naqvi<br>
<b>Sent:</b> Tuesday, January 18, 2011 8:33 PM<br>
<b>To:</b> <a href="mailto:equest-users@lists.onebuilding.org">equest-users@lists.onebuilding.org</a><br>
<b>Subject:</b> [Equest-users] Constructing chiller part load curves</span><o:p></o:p></p>
</div>
</div>
<p class=MsoNormal> <o:p></o:p></p>
<p class=MsoNormal>After browsing the forums, it seems there are many users
that have constructed custom chiller curves based on selection data. I believe
I have all the data I need to do this, but am coming up with polynomial
coefficients and hourly results that do not make sense at all. Can someone
please walk me through how to go about building the 3 curves for a centrifugal,
water cooled chiller with a VSD based on the following data:<o:p></o:p></p>
<p class=MsoNormal> <o:p></o:p></p>
<table class=MsoNormalTable border=0 cellspacing=0 cellpadding=0 width=647
style='width:485.0pt;margin-left:-.55pt;border-collapse:collapse'>
<tr style='height:13.2pt'>
<td width=64 nowrap style='width:48.0pt;border:solid windowtext 1.0pt;
padding:0in 5.4pt 0in 5.4pt;height:13.2pt'>
<p class=MsoNormal align=center style='text-align:center'><span
style='font-size:10.0pt;font-family:"Arial","sans-serif"'>% Load</span><o:p></o:p></p>
</td>
<td width=91 nowrap style='width:68.0pt;border:solid windowtext 1.0pt;
border-left:none;padding:0in 5.4pt 0in 5.4pt;height:13.2pt'>
<p class=MsoNormal align=center style='text-align:center'><span
style='font-size:10.0pt;font-family:"Arial","sans-serif"'>Capacity</span><o:p></o:p></p>
</td>
<td width=64 nowrap style='width:48.0pt;border:solid windowtext 1.0pt;
border-left:none;padding:0in 5.4pt 0in 5.4pt;height:13.2pt'>
<p class=MsoNormal align=center style='text-align:center'><span
style='font-size:10.0pt;font-family:"Arial","sans-serif"'>kW in</span><o:p></o:p></p>
</td>
<td width=64 nowrap style='width:48.0pt;border:solid windowtext 1.0pt;
border-left:none;padding:0in 5.4pt 0in 5.4pt;height:13.2pt'>
<p class=MsoNormal align=center style='text-align:center'><span
style='font-size:10.0pt;font-family:"Arial","sans-serif"'>Perf</span><o:p></o:p></p>
</td>
<td width=87 nowrap style='width:65.0pt;border:solid windowtext 1.0pt;
border-left:none;padding:0in 5.4pt 0in 5.4pt;height:13.2pt'>
<p class=MsoNormal align=center style='text-align:center'><span
style='font-size:10.0pt;font-family:"Arial","sans-serif"'>Evap T in</span><o:p></o:p></p>
</td>
<td width=96 nowrap style='width:1.0in;border:solid windowtext 1.0pt;
border-left:none;padding:0in 5.4pt 0in 5.4pt;height:13.2pt'>
<p class=MsoNormal align=center style='text-align:center'><span
style='font-size:10.0pt;font-family:"Arial","sans-serif"'>Evap T out</span><o:p></o:p></p>
</td>
<td width=93 nowrap style='width:69.75pt;border:solid windowtext 1.0pt;
border-left:none;padding:0in 5.4pt 0in 5.4pt;height:13.2pt'>
<p class=MsoNormal align=center style='text-align:center'><span
style='font-size:10.0pt;font-family:"Arial","sans-serif"'>Conden T in</span><o:p></o:p></p>
</td>
<td width=88 nowrap style='width:66.25pt;border:solid windowtext 1.0pt;
border-left:none;padding:0in 5.4pt 0in 5.4pt;height:13.2pt'>
<p class=MsoNormal align=center style='text-align:center'><span
style='font-size:10.0pt;font-family:"Arial","sans-serif"'>Coned T out</span><o:p></o:p></p>
</td>
</tr>
<tr style='height:13.2pt'>
<td width=64 nowrap style='width:48.0pt;border:solid windowtext 1.0pt;
border-top:none;padding:0in 5.4pt 0in 5.4pt;height:13.2pt'>
<p class=MsoNormal align=center style='text-align:center'><span
style='font-size:10.0pt;font-family:"Arial","sans-serif"'>100</span><o:p></o:p></p>
</td>
<td width=91 nowrap style='width:68.0pt;border-top:none;border-left:none;
border-bottom:solid windowtext 1.0pt;border-right:solid windowtext 1.0pt;
padding:0in 5.4pt 0in 5.4pt;height:13.2pt'>
<p class=MsoNormal align=center style='text-align:center'><span
style='font-size:10.0pt;font-family:"Arial","sans-serif"'>85</span><o:p></o:p></p>
</td>
<td width=64 nowrap style='width:48.0pt;border-top:none;border-left:none;
border-bottom:solid windowtext 1.0pt;border-right:solid windowtext 1.0pt;
padding:0in 5.4pt 0in 5.4pt;height:13.2pt'>
<p class=MsoNormal align=center style='text-align:center'><span
style='font-size:10.0pt;font-family:"Arial","sans-serif"'>53.6</span><o:p></o:p></p>
</td>
<td width=64 nowrap style='width:48.0pt;border-top:none;border-left:none;
border-bottom:solid windowtext 1.0pt;border-right:solid windowtext 1.0pt;
padding:0in 5.4pt 0in 5.4pt;height:13.2pt'>
<p class=MsoNormal align=center style='text-align:center'><span
style='font-size:10.0pt;font-family:"Arial","sans-serif"'>0.63</span><o:p></o:p></p>
</td>
<td width=87 nowrap style='width:65.0pt;border-top:none;border-left:none;
border-bottom:solid windowtext 1.0pt;border-right:solid windowtext 1.0pt;
padding:0in 5.4pt 0in 5.4pt;height:13.2pt'>
<p class=MsoNormal align=center style='text-align:center'><span
style='font-size:10.0pt;font-family:"Arial","sans-serif"'>54</span><o:p></o:p></p>
</td>
<td width=96 nowrap style='width:1.0in;border-top:none;border-left:none;
border-bottom:solid windowtext 1.0pt;border-right:solid windowtext 1.0pt;
padding:0in 5.4pt 0in 5.4pt;height:13.2pt'>
<p class=MsoNormal align=center style='text-align:center'><span
style='font-size:10.0pt;font-family:"Arial","sans-serif"'>44</span><o:p></o:p></p>
</td>
<td width=93 nowrap style='width:69.75pt;border-top:none;border-left:none;
border-bottom:solid windowtext 1.0pt;border-right:solid windowtext 1.0pt;
padding:0in 5.4pt 0in 5.4pt;height:13.2pt'>
<p class=MsoNormal align=center style='text-align:center'><span
style='font-size:10.0pt;font-family:"Arial","sans-serif"'>85</span><o:p></o:p></p>
</td>
<td width=88 nowrap style='width:66.25pt;border-top:none;border-left:none;
border-bottom:solid windowtext 1.0pt;border-right:solid windowtext 1.0pt;
padding:0in 5.4pt 0in 5.4pt;height:13.2pt'>
<p class=MsoNormal align=center style='text-align:center'><span
style='font-size:10.0pt;font-family:"Arial","sans-serif"'>94.8</span><o:p></o:p></p>
</td>
</tr>
<tr style='height:13.2pt'>
<td width=64 nowrap style='width:48.0pt;border:solid windowtext 1.0pt;
border-top:none;padding:0in 5.4pt 0in 5.4pt;height:13.2pt'>
<p class=MsoNormal align=center style='text-align:center'><span
style='font-size:10.0pt;font-family:"Arial","sans-serif"'>75</span><o:p></o:p></p>
</td>
<td width=91 nowrap style='width:68.0pt;border-top:none;border-left:none;
border-bottom:solid windowtext 1.0pt;border-right:solid windowtext 1.0pt;
padding:0in 5.4pt 0in 5.4pt;height:13.2pt'>
<p class=MsoNormal align=center style='text-align:center'><span
style='font-size:10.0pt;font-family:"Arial","sans-serif"'>63.8</span><o:p></o:p></p>
</td>
<td width=64 nowrap style='width:48.0pt;border-top:none;border-left:none;
border-bottom:solid windowtext 1.0pt;border-right:solid windowtext 1.0pt;
padding:0in 5.4pt 0in 5.4pt;height:13.2pt'>
<p class=MsoNormal align=center style='text-align:center'><span
style='font-size:10.0pt;font-family:"Arial","sans-serif"'>29.8</span><o:p></o:p></p>
</td>
<td width=64 nowrap style='width:48.0pt;border-top:none;border-left:none;
border-bottom:solid windowtext 1.0pt;border-right:solid windowtext 1.0pt;
padding:0in 5.4pt 0in 5.4pt;height:13.2pt'>
<p class=MsoNormal align=center style='text-align:center'><span
style='font-size:10.0pt;font-family:"Arial","sans-serif"'>0.47</span><o:p></o:p></p>
</td>
<td width=87 nowrap style='width:65.0pt;border-top:none;border-left:none;
border-bottom:solid windowtext 1.0pt;border-right:solid windowtext 1.0pt;
padding:0in 5.4pt 0in 5.4pt;height:13.2pt'>
<p class=MsoNormal align=center style='text-align:center'><span
style='font-size:10.0pt;font-family:"Arial","sans-serif"'>51.5</span><o:p></o:p></p>
</td>
<td width=96 nowrap style='width:1.0in;border-top:none;border-left:none;
border-bottom:solid windowtext 1.0pt;border-right:solid windowtext 1.0pt;
padding:0in 5.4pt 0in 5.4pt;height:13.2pt'>
<p class=MsoNormal align=center style='text-align:center'><span
style='font-size:10.0pt;font-family:"Arial","sans-serif"'>44</span><o:p></o:p></p>
</td>
<td width=93 nowrap style='width:69.75pt;border-top:none;border-left:none;
border-bottom:solid windowtext 1.0pt;border-right:solid windowtext 1.0pt;
padding:0in 5.4pt 0in 5.4pt;height:13.2pt'>
<p class=MsoNormal align=center style='text-align:center'><span
style='font-size:10.0pt;font-family:"Arial","sans-serif"'>75</span><o:p></o:p></p>
</td>
<td width=88 nowrap style='width:66.25pt;border-top:none;border-left:none;
border-bottom:solid windowtext 1.0pt;border-right:solid windowtext 1.0pt;
padding:0in 5.4pt 0in 5.4pt;height:13.2pt'>
<p class=MsoNormal align=center style='text-align:center'><span
style='font-size:10.0pt;font-family:"Arial","sans-serif"'>82</span><o:p></o:p></p>
</td>
</tr>
<tr style='height:13.2pt'>
<td width=64 nowrap style='width:48.0pt;border:solid windowtext 1.0pt;
border-top:none;padding:0in 5.4pt 0in 5.4pt;height:13.2pt'>
<p class=MsoNormal align=center style='text-align:center'><span
style='font-size:10.0pt;font-family:"Arial","sans-serif"'>50</span><o:p></o:p></p>
</td>
<td width=91 nowrap style='width:68.0pt;border-top:none;border-left:none;
border-bottom:solid windowtext 1.0pt;border-right:solid windowtext 1.0pt;
padding:0in 5.4pt 0in 5.4pt;height:13.2pt'>
<p class=MsoNormal align=center style='text-align:center'><span
style='font-size:10.0pt;font-family:"Arial","sans-serif"'>42.5</span><o:p></o:p></p>
</td>
<td width=64 nowrap style='width:48.0pt;border-top:none;border-left:none;
border-bottom:solid windowtext 1.0pt;border-right:solid windowtext 1.0pt;
padding:0in 5.4pt 0in 5.4pt;height:13.2pt'>
<p class=MsoNormal align=center style='text-align:center'><span
style='font-size:10.0pt;font-family:"Arial","sans-serif"'>13.3</span><o:p></o:p></p>
</td>
<td width=64 nowrap style='width:48.0pt;border-top:none;border-left:none;
border-bottom:solid windowtext 1.0pt;border-right:solid windowtext 1.0pt;
padding:0in 5.4pt 0in 5.4pt;height:13.2pt'>
<p class=MsoNormal align=center style='text-align:center'><span
style='font-size:10.0pt;font-family:"Arial","sans-serif"'>0.31</span><o:p></o:p></p>
</td>
<td width=87 nowrap style='width:65.0pt;border-top:none;border-left:none;
border-bottom:solid windowtext 1.0pt;border-right:solid windowtext 1.0pt;
padding:0in 5.4pt 0in 5.4pt;height:13.2pt'>
<p class=MsoNormal align=center style='text-align:center'><span
style='font-size:10.0pt;font-family:"Arial","sans-serif"'>49</span><o:p></o:p></p>
</td>
<td width=96 nowrap style='width:1.0in;border-top:none;border-left:none;
border-bottom:solid windowtext 1.0pt;border-right:solid windowtext 1.0pt;
padding:0in 5.4pt 0in 5.4pt;height:13.2pt'>
<p class=MsoNormal align=center style='text-align:center'><span
style='font-size:10.0pt;font-family:"Arial","sans-serif"'>44</span><o:p></o:p></p>
</td>
<td width=93 nowrap style='width:69.75pt;border-top:none;border-left:none;
border-bottom:solid windowtext 1.0pt;border-right:solid windowtext 1.0pt;
padding:0in 5.4pt 0in 5.4pt;height:13.2pt'>
<p class=MsoNormal align=center style='text-align:center'><span
style='font-size:10.0pt;font-family:"Arial","sans-serif"'>65</span><o:p></o:p></p>
</td>
<td width=88 nowrap style='width:66.25pt;border-top:none;border-left:none;
border-bottom:solid windowtext 1.0pt;border-right:solid windowtext 1.0pt;
padding:0in 5.4pt 0in 5.4pt;height:13.2pt'>
<p class=MsoNormal align=center style='text-align:center'><span
style='font-size:10.0pt;font-family:"Arial","sans-serif"'>69.5</span><o:p></o:p></p>
</td>
</tr>
<tr style='height:13.2pt'>
<td width=64 nowrap style='width:48.0pt;border:solid windowtext 1.0pt;
border-top:none;padding:0in 5.4pt 0in 5.4pt;height:13.2pt'>
<p class=MsoNormal align=center style='text-align:center'><span
style='font-size:10.0pt;font-family:"Arial","sans-serif"'>25</span><o:p></o:p></p>
</td>
<td width=91 nowrap style='width:68.0pt;border-top:none;border-left:none;
border-bottom:solid windowtext 1.0pt;border-right:solid windowtext 1.0pt;
padding:0in 5.4pt 0in 5.4pt;height:13.2pt'>
<p class=MsoNormal align=center style='text-align:center'><span
style='font-size:10.0pt;font-family:"Arial","sans-serif"'>21.3</span><o:p></o:p></p>
</td>
<td width=64 nowrap style='width:48.0pt;border-top:none;border-left:none;
border-bottom:solid windowtext 1.0pt;border-right:solid windowtext 1.0pt;
padding:0in 5.4pt 0in 5.4pt;height:13.2pt'>
<p class=MsoNormal align=center style='text-align:center'><span
style='font-size:10.0pt;font-family:"Arial","sans-serif"'>6.9</span><o:p></o:p></p>
</td>
<td width=64 nowrap style='width:48.0pt;border-top:none;border-left:none;
border-bottom:solid windowtext 1.0pt;border-right:solid windowtext 1.0pt;
padding:0in 5.4pt 0in 5.4pt;height:13.2pt'>
<p class=MsoNormal align=center style='text-align:center'><span
style='font-size:10.0pt;font-family:"Arial","sans-serif"'>0.32</span><o:p></o:p></p>
</td>
<td width=87 nowrap style='width:65.0pt;border-top:none;border-left:none;
border-bottom:solid windowtext 1.0pt;border-right:solid windowtext 1.0pt;
padding:0in 5.4pt 0in 5.4pt;height:13.2pt'>
<p class=MsoNormal align=center style='text-align:center'><span
style='font-size:10.0pt;font-family:"Arial","sans-serif"'>46.5</span><o:p></o:p></p>
</td>
<td width=96 nowrap style='width:1.0in;border-top:none;border-left:none;
border-bottom:solid windowtext 1.0pt;border-right:solid windowtext 1.0pt;
padding:0in 5.4pt 0in 5.4pt;height:13.2pt'>
<p class=MsoNormal align=center style='text-align:center'><span
style='font-size:10.0pt;font-family:"Arial","sans-serif"'>44</span><o:p></o:p></p>
</td>
<td width=93 nowrap style='width:69.75pt;border-top:none;border-left:none;
border-bottom:solid windowtext 1.0pt;border-right:solid windowtext 1.0pt;
padding:0in 5.4pt 0in 5.4pt;height:13.2pt'>
<p class=MsoNormal align=center style='text-align:center'><span
style='font-size:10.0pt;font-family:"Arial","sans-serif"'>65</span><o:p></o:p></p>
</td>
<td width=88 nowrap style='width:66.25pt;border-top:none;border-left:none;
border-bottom:solid windowtext 1.0pt;border-right:solid windowtext 1.0pt;
padding:0in 5.4pt 0in 5.4pt;height:13.2pt'>
<p class=MsoNormal align=center style='text-align:center'><span
style='font-size:10.0pt;font-family:"Arial","sans-serif"'>67.2</span><o:p></o:p></p>
</td>
</tr>
</table>
<p class=MsoNormal> <o:p></o:p></p>
<p class=MsoNormal> <o:p></o:p></p>
<p class=MsoNormal>I believe the additional data I need is calculated below,
except for the dT term which I am unclear on:<o:p></o:p></p>
<p class=MsoNormal> <o:p></o:p></p>
<table class=MsoNormalTable border=0 cellspacing=0 cellpadding=0 width=283
style='width:212.0pt;margin-left:-.55pt;border-collapse:collapse'>
<tr style='height:13.2pt'>
<td width=64 style='width:48.0pt;border:solid windowtext 1.0pt;padding:0in 5.4pt 0in 5.4pt;
height:13.2pt'>
<p class=MsoNormal align=center style='text-align:center'><span
style='font-size:10.0pt;font-family:"Arial","sans-serif"'>Load</span><o:p></o:p></p>
</td>
<td width=91 style='width:68.0pt;border:solid windowtext 1.0pt;border-left:
none;padding:0in 5.4pt 0in 5.4pt;height:13.2pt'>
<p class=MsoNormal align=center style='text-align:center'><span
style='font-size:10.0pt;font-family:"Arial","sans-serif"'>PLR</span><o:p></o:p></p>
</td>
<td width=64 style='width:48.0pt;border:solid windowtext 1.0pt;border-left:
none;padding:0in 5.4pt 0in 5.4pt;height:13.2pt'>
<p class=MsoNormal align=center style='text-align:center'><span
style='font-size:10.0pt;font-family:"Arial","sans-serif"'>kW</span><o:p></o:p></p>
</td>
<td width=64 style='width:48.0pt;border:solid windowtext 1.0pt;border-left:
none;padding:0in 5.4pt 0in 5.4pt;height:13.2pt'>
<p class=MsoNormal align=center style='text-align:center'><span
style='font-size:10.0pt;font-family:"Arial","sans-serif"'>f PLR</span><o:p></o:p></p>
</td>
</tr>
<tr style='height:13.2pt'>
<td width=64 style='width:48.0pt;border:solid windowtext 1.0pt;border-top:
none;padding:0in 5.4pt 0in 5.4pt;height:13.2pt'>
<p class=MsoNormal align=center style='text-align:center'><span
style='font-size:10.0pt;font-family:"Arial","sans-serif"'>85</span><o:p></o:p></p>
</td>
<td width=91 style='width:68.0pt;border-top:none;border-left:none;border-bottom:
solid windowtext 1.0pt;border-right:solid windowtext 1.0pt;padding:0in 5.4pt 0in 5.4pt;
height:13.2pt'>
<p class=MsoNormal align=center style='text-align:center'><span
style='font-size:10.0pt;font-family:"Arial","sans-serif"'>1</span><o:p></o:p></p>
</td>
<td width=64 style='width:48.0pt;border-top:none;border-left:none;border-bottom:
solid windowtext 1.0pt;border-right:solid windowtext 1.0pt;padding:0in 5.4pt 0in 5.4pt;
height:13.2pt'>
<p class=MsoNormal align=center style='text-align:center'><span
style='font-size:10.0pt;font-family:"Arial","sans-serif"'>53.6</span><o:p></o:p></p>
</td>
<td width=64 style='width:48.0pt;border-top:none;border-left:none;border-bottom:
solid windowtext 1.0pt;border-right:solid windowtext 1.0pt;padding:0in 5.4pt 0in 5.4pt;
height:13.2pt'>
<p class=MsoNormal align=center style='text-align:center'><span
style='font-size:10.0pt;font-family:"Arial","sans-serif"'>1</span><o:p></o:p></p>
</td>
</tr>
<tr style='height:13.2pt'>
<td width=64 style='width:48.0pt;border:solid windowtext 1.0pt;border-top:
none;padding:0in 5.4pt 0in 5.4pt;height:13.2pt'>
<p class=MsoNormal align=center style='text-align:center'><span
style='font-size:10.0pt;font-family:"Arial","sans-serif"'>63.8</span><o:p></o:p></p>
</td>
<td width=91 style='width:68.0pt;border-top:none;border-left:none;border-bottom:
solid windowtext 1.0pt;border-right:solid windowtext 1.0pt;padding:0in 5.4pt 0in 5.4pt;
height:13.2pt'>
<p class=MsoNormal align=center style='text-align:center'><span
style='font-size:10.0pt;font-family:"Arial","sans-serif"'>0.751</span><o:p></o:p></p>
</td>
<td width=64 style='width:48.0pt;border-top:none;border-left:none;border-bottom:
solid windowtext 1.0pt;border-right:solid windowtext 1.0pt;padding:0in 5.4pt 0in 5.4pt;
height:13.2pt'>
<p class=MsoNormal align=center style='text-align:center'><span
style='font-size:10.0pt;font-family:"Arial","sans-serif"'>29.8</span><o:p></o:p></p>
</td>
<td width=64 style='width:48.0pt;border-top:none;border-left:none;border-bottom:
solid windowtext 1.0pt;border-right:solid windowtext 1.0pt;padding:0in 5.4pt 0in 5.4pt;
height:13.2pt'>
<p class=MsoNormal align=center style='text-align:center'><span
style='font-size:10.0pt;font-family:"Arial","sans-serif"'>0.556</span><o:p></o:p></p>
</td>
</tr>
<tr style='height:13.2pt'>
<td width=64 style='width:48.0pt;border:solid windowtext 1.0pt;border-top:
none;padding:0in 5.4pt 0in 5.4pt;height:13.2pt'>
<p class=MsoNormal align=center style='text-align:center'><span
style='font-size:10.0pt;font-family:"Arial","sans-serif"'>42.5</span><o:p></o:p></p>
</td>
<td width=91 style='width:68.0pt;border-top:none;border-left:none;border-bottom:
solid windowtext 1.0pt;border-right:solid windowtext 1.0pt;padding:0in 5.4pt 0in 5.4pt;
height:13.2pt'>
<p class=MsoNormal align=center style='text-align:center'><span
style='font-size:10.0pt;font-family:"Arial","sans-serif"'>0.500</span><o:p></o:p></p>
</td>
<td width=64 style='width:48.0pt;border-top:none;border-left:none;border-bottom:
solid windowtext 1.0pt;border-right:solid windowtext 1.0pt;padding:0in 5.4pt 0in 5.4pt;
height:13.2pt'>
<p class=MsoNormal align=center style='text-align:center'><span
style='font-size:10.0pt;font-family:"Arial","sans-serif"'>13.3</span><o:p></o:p></p>
</td>
<td width=64 style='width:48.0pt;border-top:none;border-left:none;border-bottom:
solid windowtext 1.0pt;border-right:solid windowtext 1.0pt;padding:0in 5.4pt 0in 5.4pt;
height:13.2pt'>
<p class=MsoNormal align=center style='text-align:center'><span
style='font-size:10.0pt;font-family:"Arial","sans-serif"'>0.248</span><o:p></o:p></p>
</td>
</tr>
<tr style='height:13.2pt'>
<td width=64 style='width:48.0pt;border:solid windowtext 1.0pt;border-top:
none;padding:0in 5.4pt 0in 5.4pt;height:13.2pt'>
<p class=MsoNormal align=center style='text-align:center'><span
style='font-size:10.0pt;font-family:"Arial","sans-serif"'>21.3</span><o:p></o:p></p>
</td>
<td width=91 style='width:68.0pt;border-top:none;border-left:none;border-bottom:
solid windowtext 1.0pt;border-right:solid windowtext 1.0pt;padding:0in 5.4pt 0in 5.4pt;
height:13.2pt'>
<p class=MsoNormal align=center style='text-align:center'><span
style='font-size:10.0pt;font-family:"Arial","sans-serif"'>0.251</span><o:p></o:p></p>
</td>
<td width=64 style='width:48.0pt;border-top:none;border-left:none;border-bottom:
solid windowtext 1.0pt;border-right:solid windowtext 1.0pt;padding:0in 5.4pt 0in 5.4pt;
height:13.2pt'>
<p class=MsoNormal align=center style='text-align:center'><span
style='font-size:10.0pt;font-family:"Arial","sans-serif"'>6.9</span><o:p></o:p></p>
</td>
<td width=64 style='width:48.0pt;border-top:none;border-left:none;border-bottom:
solid windowtext 1.0pt;border-right:solid windowtext 1.0pt;padding:0in 5.4pt 0in 5.4pt;
height:13.2pt'>
<p class=MsoNormal align=center style='text-align:center'><span
style='font-size:10.0pt;font-family:"Arial","sans-serif"'>0.129</span><o:p></o:p></p>
</td>
</tr>
</table>
<p class=MsoNormal> <o:p></o:p></p>
<p class=MsoNormal> <o:p></o:p></p>
<p class=MsoNormal>Not sure if the dT term required by the curves is the
difference in condenser supply and return, or condenser and evaporator supply,
condenser supply and evaporator return, etc. Can someone please clarify?<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><span style='font-family:"Times New Roman","serif"'> </span><o:p></o:p></p>
<p class=MsoNormal><span style='font-family:"Times New Roman","serif"'> </span><o:p></o:p></p>
<p class=MsoNormal><b><span style='font-family:"Times New Roman","serif";
color:#28AAE1'>Afaan Naqvi </span></b><b><span style='font-family:"Times New Roman","serif";
color:gray'> </span></b><span style='font-size:10.0pt;font-family:"Times New Roman","serif";
color:gray'>PE LEED AP</span><o:p></o:p></p>
<p class=MsoNormal><span style='font-size:12.0pt;font-family:"Courier New"'>____________________________________________________________<br>
Electronic mail messages entering and leaving Arup business<br>
systems are scanned for acceptability of content and viruses</span><o:p></o:p></p>
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