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<div class=Section1>
<p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";
color:#1F497D'>Rohini,<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'>Good question… the capacity for non-eQuest programs to
handle an IPLV inputs may be better addressed separately to the [bldg-sim] list.<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'>I’m not sure whether HAP or Trace can explicitly use IPLV
figures to help determine part load curves, but John makes a fair point: Math
fundamentals are getting in the way… you can’t solve for a curve (quadratic
- 3 unknowns or cubic - 4 unknowns) with only one weighted efficiency. No
program should be able to determine part load behavior knowing only the IPLV figure
– at best a program might assume a part load curve shape and “re-factor”
it to match the IPLV – you’d probably be better off assuming the
IPLV weightings are appropriate to your project and just apply a straight
factor (IPLV</span><span style='font-size:9.0pt;font-family:"Calibri","sans-serif";
color:#1F497D'>1</span><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";
color:#1F497D'>/IPLV</span><span style='font-size:9.0pt;font-family:"Calibri","sans-serif";
color:#1F497D'>2</span><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";
color:#1F497D'>) to the chiller energy consumed.<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'>The ability to generate a curve by inputting the IPLV values (at
25/50/75/100) could be a UI-improvement/timesaver for any modeling program (hint-hint,
developers!), but note this is really already built into eQuest in the form of the
raw-data entry method of defining a curve… My suggestion to work out the normalized
data and/or coefficients separately in excel is simply a way to document/check/visualize
your work to avoid any major hiccups. <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'>~Nick<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'><img width=119 height=37 id="Picture_x0020_1"
src="cid:image001.jpg@01CBD4EA.0D0D91E0" alt="cid:489575314@22072009-0ABB"></span><b><span
style='font-size:11.0pt;font-family:"Stylus BT","sans-serif";color:#2D4D5E'><o:p></o:p></span></b></p>
<p class=MsoNormal><b><span style='font-size:11.0pt;font-family:"Stylus BT","sans-serif";
color:#2D4D5E'><o:p> </o:p></span></b></p>
<p class=MsoNormal><b><span style='font-size:11.0pt;font-family:"Stylus BT","sans-serif";
color:#2D4D5E'>NICK CATON, E.I.T.</span></b><b><span style='font-family:"Stylus BT","sans-serif";
color:#2D4D5E'><o:p></o:p></span></b></p>
<p class=MsoNormal><span style='font-size:7.5pt;font-family:"Calibri","sans-serif";
color:#CC9900'>PROJECT ENGINEER<o:p></o:p></span></p>
<p class=MsoNormal><span style='font-size:10.0pt;font-family:"Calibri","sans-serif";
color:#2D4D5E'>Smith & Boucher Engineers</span><span style='font-size:7.5pt;
color:#CC9900'><o:p></o:p></span></p>
<p class=MsoNormal><span style='font-size:10.0pt;font-family:"Calibri","sans-serif";
color:#2D4D5E'>25501 west valley parkway<o:p></o:p></span></p>
<p class=MsoNormal><span style='font-size:10.0pt;font-family:"Calibri","sans-serif";
color:#2D4D5E'>olathe ks 66061<o:p></o:p></span></p>
<p class=MsoNormal><span style='font-size:10.0pt;font-family:"Calibri","sans-serif";
color:#2D4D5E'>direct 913 344.0036<o:p></o:p></span></p>
<p class=MsoNormal><span style='font-size:10.0pt;font-family:"Calibri","sans-serif";
color:#2D4D5E'>fax 913 345.0617<o:p></o:p></span></p>
<p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";
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;font-family:"Calibri","sans-serif";color:blue'> </span></u><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'><o:p> </o:p></span></p>
<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>R B<br>
<b>Sent:</b> Friday, February 25, 2011 12:32 PM<br>
<b>To:</b> equest-users@lists.onebuilding.org<br>
<b>Subject:</b> Re: [Equest-users] using IPLV in eQuest<o:p></o:p></span></p>
</div>
<p class=MsoNormal><o:p> </o:p></p>
<div>
<p class=MsoNormal>Thanks all. As I thought all along, seems like there is no
easy way out.<o:p></o:p></p>
</div>
<div>
<p class=MsoNormal style='margin-bottom:12.0pt'>Any ideas on how HAP/TRACE
treat chiller simulation? Do they use IPLV's or do they have many more options
for performance curves or is it same as eQuest?<o:p></o:p></p>
</div>
<div>
<p class=MsoNormal>On Fri, Feb 25, 2011 at 12:21 PM, Nick Caton <<a
href="mailto:ncaton@smithboucher.com">ncaton@smithboucher.com</a>> wrote:<o:p></o:p></p>
<div>
<div>
<p class=MsoNormal style='mso-margin-top-alt:auto;mso-margin-bottom-alt:auto'><span
style='font-size:11.0pt;color:#1F497D'>James et al,</span><o:p></o:p></p>
<p class=MsoNormal style='mso-margin-top-alt:auto;mso-margin-bottom-alt:auto'><span
style='font-size:11.0pt;color:#1F497D'> </span><o:p></o:p></p>
<p class=MsoNormal style='mso-margin-top-alt:auto;mso-margin-bottom-alt:auto'><span
style='font-size:11.0pt;color:#1F497D'>Rohini will need to create performance
curves to make this particular comparison. Otherwise using the default
curves will result in identical part load performances.</span><o:p></o:p></p>
<p class=MsoNormal style='mso-margin-top-alt:auto;mso-margin-bottom-alt:auto'><span
style='font-size:11.0pt;color:#1F497D'> </span><o:p></o:p></p>
<p class=MsoNormal style='mso-margin-top-alt:auto;mso-margin-bottom-alt:auto'><span
style='font-size:11.0pt;color:#1F497D'>The following is excerpted from the
following (short) recommended reading concerning what IPLV means: <a
href="http://ashrae-cfl.org/2010/03/understanding-iplvnplv/" target="_blank">http://ashrae-cfl.org/2010/03/understanding-iplvnplv/</a></span><o:p></o:p></p>
<p style='margin-left:.5in'>IPLV (or NPLV) = 0.01A+0.42B+0.45C+0.12D<o:p></o:p></p>
<p style='margin-left:.5in'>Where:<o:p></o:p></p>
<p style='margin-left:.5in'>A = COP or EER @ 100% Load<o:p></o:p></p>
<p style='margin-left:.5in'>B = COP or EER @ 75% Load<o:p></o:p></p>
<p style='margin-left:.5in'>C = COP or EER @ 50% Load<o:p></o:p></p>
<p style='margin-left:.5in'>D = COP or EER @ 25% Load<o:p></o:p></p>
<p class=MsoNormal style='mso-margin-top-alt:auto;mso-margin-bottom-alt:auto'><span
style='font-size:11.0pt;color:#1F497D'>John is saying knowing only the IPLV and
the 100% load condition efficiency (variable ‘A,’ above) is not
enough information to extrapolate the IPLV curves to compare the two
chillers. </span><o:p></o:p></p>
<p class=MsoNormal style='mso-margin-top-alt:auto;mso-margin-bottom-alt:auto'><span
style='font-size:11.0pt;color:#1F497D'> </span><o:p></o:p></p>
<p class=MsoNormal style='mso-margin-top-alt:auto;mso-margin-bottom-alt:auto'><span
style='font-size:11.0pt;color:#1F497D'>For the exercise of comparing the two
non-centrifugal chillers of the same technology/type, I would just focus on
making a custom EIR-FPLR (not EIR-fPLR&dT) for each chiller, and use the
library CAP-FT AND EIR-FT curves. My understanding is the effects of
temperature on capacity and EIR outside of centrifugal VSD chillers is
negligible. NOTE: Whenever using any of the default library chiller
performance curves, that means you MUST normalize to and specify the chiller at
ARI conditions – those curves aren’t normalized to anything else.</span><o:p></o:p></p>
<p class=MsoNormal style='mso-margin-top-alt:auto;mso-margin-bottom-alt:auto'><span
style='font-size:11.0pt;color:#1F497D'> </span><o:p></o:p></p>
<p class=MsoNormal style='mso-margin-top-alt:auto;mso-margin-bottom-alt:auto'><span
style='font-size:11.0pt;color:#1F497D'>So! If you can find the IPLV A, B,
C and D values for both chillers’ curves, you could come up with your
EIR-FPLR curve coefficients (<u>curve type = quadratic or cubic</u>) using a
curve-fit in excel… or alternatively make eQuest figure the coefficients
by entering those points as raw data.</span><o:p></o:p></p>
<p class=MsoNormal style='mso-margin-top-alt:auto;mso-margin-bottom-alt:auto'><span
style='font-size:11.0pt;color:#1F497D'> </span><o:p></o:p></p>
<p class=MsoNormal style='mso-margin-top-alt:auto;mso-margin-bottom-alt:auto'><span
style='font-size:11.0pt;color:#1F497D'>You may more easily just make your own
curves, following John’s advice and getting part load unloading curves
(100%, 90%, 80%... etc) held at a constant chilled & condenser temperature
to match the ARI* conditions (85CWT if this is water cooled) at which
you’re specifying the chiller capacity/EIR. Again, you could either
go into excel, normalize the data (review DOE2 help entry for EIR-FPLR), make a
scatter chart, and get the coefficients using a curve fit… or enter the
data as raw points into eQuest and the coefficients will be figured by
eQuest… whatever makes more sense to you.</span><o:p></o:p></p>
<p class=MsoNormal style='mso-margin-top-alt:auto;mso-margin-bottom-alt:auto'><span
style='font-size:11.0pt;color:#1F497D'> </span><o:p></o:p></p>
<p class=MsoNormal style='mso-margin-top-alt:auto;mso-margin-bottom-alt:auto'><span
style='font-size:11.0pt;color:#1F497D'>For others and personal future
reference…. If you are looking to make an <u>EIR-fPLR&dT</u> curve
(for centrifugal chillers or otherwise): Ask your rep instead for
multiple (minimum 3) part load unloading runs, holding the delivered chilled
water temp constant, and vary the condenser water temperature incrementally for
each run (i.e. 85, 75, 65). Choose a range of CWT’s that cover the
anticipated range to be encountered in the actual design. This will get you
enough data to have the minimum 3 delta-T’s represented in your part load
data points to build this curve correctly. You’ll be using eQuest
“raw-data” entry method to make it generate the coefficients.</span><o:p></o:p></p>
<p class=MsoNormal style='mso-margin-top-alt:auto;mso-margin-bottom-alt:auto'><span
style='font-size:11.0pt;color:#1F497D'> </span><o:p></o:p></p>
<p class=MsoNormal style='mso-margin-top-alt:auto;mso-margin-bottom-alt:auto'><span
style='font-size:11.0pt;color:#1F497D'>~Nick</span><o:p></o:p></p>
<p class=MsoNormal style='mso-margin-top-alt:auto;mso-margin-bottom-alt:auto'><span
style='font-size:11.0pt;color:#1F497D'> </span><o:p></o:p></p>
<p class=MsoNormal style='mso-margin-top-alt:auto;mso-margin-bottom-alt:auto'><span
style='font-size:11.0pt;color:#1F497D'>* Rather than ARI conditions (85F CWT),
you could be normalizing to Design condition EIR/CAP, provided you’re
making a full set of custom curves in the same fashion.</span><o:p></o:p></p>
<p class=MsoNormal style='mso-margin-top-alt:auto;mso-margin-bottom-alt:auto'><span
style='font-size:11.0pt;color:#1F497D'> </span><o:p></o:p></p>
<div>
<p class=MsoNormal style='mso-margin-top-alt:auto;mso-margin-bottom-alt:auto'><span
style='font-size:11.0pt;color:#1F497D'><img border=0 width=119 height=37
id="_x0000_i1025" src="cid:image001.jpg@01CBD4EA.0D0D91E0"
alt="cid:489575314@22072009-0ABB"></span><o:p></o:p></p>
<p class=MsoNormal style='mso-margin-top-alt:auto;mso-margin-bottom-alt:auto'><b><span
style='font-size:11.0pt;color:#2D4D5E'> </span></b><o:p></o:p></p>
<p class=MsoNormal style='mso-margin-top-alt:auto;mso-margin-bottom-alt:auto'><b><span
style='font-size:11.0pt;color:#2D4D5E'>NICK CATON, E.I.T.</span></b><o:p></o:p></p>
<p class=MsoNormal style='mso-margin-top-alt:auto;mso-margin-bottom-alt:auto'><span
style='font-size:7.5pt;color:#CC9900'>PROJECT ENGINEER</span><o:p></o:p></p>
<p class=MsoNormal style='mso-margin-top-alt:auto;mso-margin-bottom-alt:auto'><span
style='font-size:10.0pt;color:#2D4D5E'>Smith & Boucher Engineers</span><o:p></o:p></p>
<p class=MsoNormal style='mso-margin-top-alt:auto;mso-margin-bottom-alt:auto'><span
style='font-size:10.0pt;color:#2D4D5E'>25501 west valley parkway</span><o:p></o:p></p>
<p class=MsoNormal style='mso-margin-top-alt:auto;mso-margin-bottom-alt:auto'><span
style='font-size:10.0pt;color:#2D4D5E'>olathe ks 66061</span><o:p></o:p></p>
<p class=MsoNormal style='mso-margin-top-alt:auto;mso-margin-bottom-alt:auto'><span
style='font-size:10.0pt;color:#2D4D5E'>direct 913 344.0036</span><o:p></o:p></p>
<p class=MsoNormal style='mso-margin-top-alt:auto;mso-margin-bottom-alt:auto'><span
style='font-size:10.0pt;color:#2D4D5E'>fax 913 345.0617</span><o:p></o:p></p>
<p class=MsoNormal style='mso-margin-top-alt:auto;mso-margin-bottom-alt:auto'><span
style='font-size:11.0pt;color:#1F497D'><a href="http://www.smithboucher.com/"
target="_blank" 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><o:p></o:p></p>
</div>
<p class=MsoNormal style='mso-margin-top-alt:auto;mso-margin-bottom-alt:auto'><span
style='font-size:11.0pt;color:#1F497D'> </span><o:p></o:p></p>
<div>
<div style='border:none;border-top:solid #B5C4DF 1.0pt;padding:3.0pt 0in 0in 0in'>
<p class=MsoNormal style='mso-margin-top-alt:auto;mso-margin-bottom-alt:auto'><b><span
style='font-size:10.0pt'>From:</span></b><span style='font-size:10.0pt'> <a
href="mailto:equest-users-bounces@lists.onebuilding.org" target="_blank">equest-users-bounces@lists.onebuilding.org</a>
[mailto:<a href="mailto:equest-users-bounces@lists.onebuilding.org"
target="_blank">equest-users-bounces@lists.onebuilding.org</a>] <b>On Behalf Of
</b>James Waechter<br>
<b>Sent:</b> Friday, February 25, 2011 10:55 AM<br>
<b>To:</b> <a href="mailto:equest-users@lists.onebuilding.org" target="_blank">equest-users@lists.onebuilding.org</a>
<o:p></o:p></span></p>
<div>
<div>
<p class=MsoNormal><span style='font-size:10.0pt'><br>
<b>Subject:</b> Re: [Equest-users] using IPLV in eQuest<o:p></o:p></span></p>
</div>
</div>
</div>
</div>
<div>
<div>
<p class=MsoNormal style='mso-margin-top-alt:auto;mso-margin-bottom-alt:auto'> <o:p></o:p></p>
<p class=MsoNormal style='mso-margin-top-alt:auto;mso-margin-bottom-alt:auto'><span
style='font-size:10.0pt'>John,</span><o:p></o:p></p>
<p class=MsoNormal style='mso-margin-top-alt:auto;mso-margin-bottom-alt:auto'><span
style='font-size:10.0pt'> </span><o:p></o:p></p>
<p class=MsoNormal style='mso-margin-top-alt:auto;mso-margin-bottom-alt:auto'><span
style='font-size:10.0pt'>If the only parameter Rohini enters into the program
is the full-load EIR – which he said is the same for both chillers
– how will eQuest know to bend the curves differently for the two chiller
options. It is my understanding that program would use the same chiller
efficiency curves for both machines even though their IPLVs are different.</span><o:p></o:p></p>
<p class=MsoNormal style='mso-margin-top-alt:auto;mso-margin-bottom-alt:auto'><span
style='font-size:10.0pt'> </span><o:p></o:p></p>
<p class=MsoNormal style='mso-margin-top-alt:auto;mso-margin-bottom-alt:auto'><span
style='font-size:10.0pt'>In order to overcome this issue, are you saying Rohini
should get chiller performance data from each of the manufacturers and enter
his own custom curves? I recall there was a discussion on that topic a
few months back.</span><o:p></o:p></p>
<p class=MsoNormal style='mso-margin-top-alt:auto;mso-margin-bottom-alt:auto'><span
style='font-size:10.0pt'> </span><o:p></o:p></p>
<p class=MsoNormal style='mso-margin-top-alt:auto;mso-margin-bottom-alt:auto'><span
style='font-size:10.0pt'>Regards,</span><o:p></o:p></p>
<p class=MsoNormal style='mso-margin-top-alt:auto;mso-margin-bottom-alt:auto'><span
style='font-size:10.0pt'>James Waechter Jr., P.E., CEM, LEED A.P.<br>
Energy Engineer – Rocky Mountain Region<br>
p 303 215 4062 | m 727 686 3248</span><o:p></o:p></p>
<p class=MsoNormal style='mso-margin-top-alt:auto;mso-margin-bottom-alt:auto'><b><span
style='font-size:10.0pt'>McKinstry</span></b><span style='font-size:10.0pt'><br>
Consulting | Construction | Energy | Facility Services</span><o:p></o:p></p>
<p class=MsoNormal style='mso-margin-top-alt:auto;mso-margin-bottom-alt:auto'><span
style='font-size:10.0pt'><a href="http://www.mckinstry.com/" target="_blank"><span
style='color:windowtext'>www.mckinstry.com</span></a> </span><o:p></o:p></p>
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style='font-size:10.0pt'> </span><o:p></o:p></p>
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style='font-size:10.0pt'> </span><o:p></o:p></p>
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style='font-size:10.0pt'> </span><o:p></o:p></p>
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<p class=MsoNormal style='mso-margin-top-alt:auto;mso-margin-bottom-alt:auto'><b><span
style='font-size:10.0pt'>From:</span></b><span style='font-size:10.0pt'> <a
href="mailto:equest-users-bounces@lists.onebuilding.org" target="_blank">equest-users-bounces@lists.onebuilding.org</a>
[mailto:<a href="mailto:equest-users-bounces@lists.onebuilding.org"
target="_blank">equest-users-bounces@lists.onebuilding.org</a>] <b>On Behalf Of
</b>John Aulbach<br>
<b>Sent:</b> Friday, February 25, 2011 9:41 AM<br>
<b>To:</b> R B; eQUEST Users List<br>
<b>Subject:</b> Re: [Equest-users] using IPLV in eQuest</span><o:p></o:p></p>
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<p class=MsoNormal style='mso-margin-top-alt:auto;mso-margin-bottom-alt:auto'> <o:p></o:p></p>
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<p class=MsoNormal style='mso-margin-top-alt:auto;mso-margin-bottom-alt:auto'>Rohini:<o:p></o:p></p>
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<p class=MsoNormal style='mso-margin-top-alt:auto;mso-margin-bottom-alt:auto'> <o:p></o:p></p>
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<p class=MsoNormal style='mso-margin-top-alt:auto;mso-margin-bottom-alt:auto'>Won't
happen. IPLV is a number which has one equation and 4 unknowns. Actually, three
unknowns as you know the 100% point. You need a manufacturer's curve run at 85F
constant condenser water temperature. Let eQuest do the curve bending after
that. ARI curve won't work right.<o:p></o:p></p>
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<p class=MsoNormal style='mso-margin-top-alt:auto;mso-margin-bottom-alt:auto'> <o:p></o:p></p>
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<p class=MsoNormal style='mso-margin-top-alt:auto;mso-margin-bottom-alt:auto'> <o:p></o:p></p>
<p class=MsoNormal style='mso-margin-top-alt:auto;mso-margin-bottom-alt:auto'><span
style='color:#1F497D'>John R. Aulbach, PE, CEM</span><o:p></o:p></p>
<p class=MsoNormal style='mso-margin-top-alt:auto;mso-margin-bottom-alt:auto'><span
style='color:#1F497D'>Senior Energy Engineer</span><o:p></o:p></p>
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<hr size=2 width="30%" noshade style='color:#17365D' align=left>
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<p class=MsoNormal style='mso-margin-top-alt:auto;mso-margin-bottom-alt:auto'><b><span
style='font-variant:small-caps;color:navy'>Partner</span><span
style='font-variant:small-caps;color:green'> </span><span style='font-variant:
small-caps;color:#006600'>Energy</span></b><o:p></o:p></p>
<p class=MsoNormal style='mso-margin-top-alt:auto;mso-margin-bottom-alt:auto'><span
style='color:#1F497D'>1990 E. Grand Avenue, El Segundo, CA 90245<br>
W: 888-826-1216, X254| D: 310-765-7295 | F: 310-817-2745</span><o:p></o:p></p>
<p class=MsoNormal style='mso-margin-top-alt:auto;mso-margin-bottom-alt:auto'><a
href="http://www.ptrenergy.com/" target="_blank"><span style='color:purple'>www.ptrenergy.com</span></a><span
style='color:#1F497D'> </span><a href="mailto:%7C%20jaulbach@ptrenergy.com"
target="_blank">| jaulbach@ptrenergy.com</a><o:p></o:p></p>
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<p class=MsoNormal style='mso-margin-top-alt:auto;mso-margin-bottom-alt:auto'> <o:p></o:p></p>
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<div class=MsoNormal align=center style='text-align:center'><span
style='font-size:10.0pt'>
<hr size=1 width="100%" align=center>
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<p class=MsoNormal style='mso-margin-top-alt:auto;margin-bottom:12.0pt'><b><span
style='font-size:10.0pt'>From:</span></b><span style='font-size:10.0pt'> R B
<<a href="mailto:slv3sat@gmail.com" target="_blank">slv3sat@gmail.com</a>><br>
<b>To:</b> eQUEST Users List <<a
href="mailto:equest-users@lists.onebuilding.org" target="_blank">equest-users@lists.onebuilding.org</a>><br>
<b>Sent:</b> Fri, February 25, 2011 7:25:18 AM<br>
<b>Subject:</b> [Equest-users] using IPLV in eQuest</span><o:p></o:p></p>
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<p class=MsoNormal style='mso-margin-top-alt:auto;mso-margin-bottom-alt:auto'>Hi
All, <o:p></o:p></p>
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<p class=MsoNormal style='mso-margin-top-alt:auto;mso-margin-bottom-alt:auto'>I
would like to compare two screw chillers with same full load kW/ton and
different IPLV kW/ton. I am using the full load number for the EIR. Where can
the IPLV number be used? Is there some way to scale the performance curves to
reflect different IPLV's?<o:p></o:p></p>
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<p class=MsoNormal style='mso-margin-top-alt:auto;mso-margin-bottom-alt:auto'>-Rohini<o:p></o:p></p>
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<p class=MsoNormal style='mso-margin-top-alt:auto;mso-margin-bottom-alt:auto'> <o:p></o:p></p>
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