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<div class=Section1>
<p class=MsoNormal><span style='color:#1F497D'>To access raw data entry (maximum
20 sets of points) for creating custom curve coefficients, you should double-click
the curve being referenced in the component tree. There’s a tab for raw data
entry which becomes useable when you select the raw data entry method there.<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'>This and other questions should
be answered if you follow along with the suggested learning/reference
materials. Be cautioned, this topic is not something advisable to try and learn
at lightning speed.<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="_x0000_i1026" src="cid:image001.jpg@01CBB7D3.20157250"
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"'> Afaan Naqvi
[mailto:afaan.naqvi@arup.com] <br>
<b>Sent:</b> Wednesday, January 19, 2011 11:16 AM<br>
<b>To:</b> equest-users@lists.onebuilding.org<br>
<b>Cc:</b> David Eldridge; Nick Caton; Cassie Waddell<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:#1F497D'>Thanks to all for the feedback.
It seems all are in agreement that I need more data points, and also data
points at CHW supply temperatures other than 44 F, even if other CHW
temperatures are not supplied. A follow up question then, is where in e-Quest would
you enter 20 (or even 9 ) data points? When I look into constructing a curve
there are only 4 possible entries for dependant, delta T and independent data
points.<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'>To give this some context, I am
trying to model Smardt chillers which are marketed to have superior part load
performance which I am not sure is being captured by the default library
chiller curves.<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 again for your help.<o:p></o:p></span></p>
<div>
<p class=MsoNormal><span style='font-family:"Times New Roman","serif";
color:#1F497D'><o:p> </o:p></span></p>
<p class=MsoNormal><span style='font-family:"Times New Roman","serif";
color:#1F497D'><o:p> </o:p></span></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><b><span style='font-family:"Times New Roman","serif";
color:#28AAE1'><o:p></o:p></span></b></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>Nick
Caton<br>
<b>Sent:</b> Wednesday, January 19, 2011 9:01 AM<br>
<b>To:</b> David Eldridge; 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:#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: “Chiller Curves (oh boy!).” 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 border=0 width=119
height=37 id="Picture_x0020_1" src="cid:image001.jpg@01CBB7D3.20157250"
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>
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</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>
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