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<div class=Section1>
<p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";
color:#1F497D'>To clarify the ongoing discussion and reinforce my earlier
response to John’s query:<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'>Standard ARI rating conditions (*) for packaged AC/heatpump
equipment are 95°F DB entering at the outdoor section (outside air), and 67°F WB
entering at the indoor section (the mixed air conditions entering the coil). If
I’m not mistaken, those are the corresponding drybulb and wetbulb temperatures
to be referenced when normalizing to and creating any of the DX performance curves
that use temperatures as variables.<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'>(*) See Table 3 on page 10 of the AHRI document Maria Karpman linked
recently on bldg-sim (copied below).<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'><img width=119 height=37 id="Picture_x0020_1"
src="cid:image001.jpg@01CBC612.197CEE80" 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"'> Maria Karpman
[mailto:maria.karpman@karpmanconsulting.net] <br>
<b>Sent:</b> Tuesday, February 01, 2011 10:07 AM<br>
<b>To:</b> 'Karen Walkerman'; Nick Caton<br>
<b>Cc:</b> 'bldg-sim@lists.onebuilding.org'; 'Sam Mason'<br>
<b>Subject:</b> RE: [Bldg-sim] ASHRAE Appendix G EER Calculation<o:p></o:p></span></p>
<p class=MsoNormal><o:p> </o:p></p>
<p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";
color:#1F497D'>Karen,<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'>You can download ARI 340/360 referenced in the rightmost column
of ASHRAE 90.1 Table 6.8.1 A from <a
href="http://www.ahrinet.org/App_Content/files/standards%20pdfs/ANSI%20standards%20pdfs/ANSI%20AHRI%20340-360-2007.pdf">http://www.ahrinet.org/App_Content/files/standards%20pdfs/ANSI%20standards%20pdfs/ANSI%20AHRI%20340-360-2007.pdf</a>
(it’s free). Section 6.1 of the ARI standard reiterates that indoor fan power
must be included in the rating, which is consistent with definitions in 90.1
quoted by Nick. The section also provides standard fan power of 365 W per 1000
CFM (see top of page 11), which is used in eQUEST EER to EIR conversion paper
that I emailed yesterday. The equations in the paper are principally the same
as in the ASHRAE User Manual section that Sam sent to the forum, except the
rating conditions are used for fan energy. <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'>Thanks,<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='mso-element:para-border-div;border:none;border-bottom:solid windowtext 1.0pt;
padding:0in 0in 1.0pt 0in'>
<p class=MsoNormal style='border:none;padding:0in'><span style='font-size:11.0pt;
font-family:"Calibri","sans-serif";color:#1F497D'>Maria <o:p></o:p></span></p>
</div>
<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>Carol
Gardner<br>
<b>Sent:</b> Saturday, February 05, 2011 2:55 PM<br>
<b>To:</b> Grando, John<br>
<b>Cc:</b> equest-users@lists.onebuilding.org<br>
<b>Subject:</b> Re: [Equest-users] Curve Coefficients<o:p></o:p></span></p>
</div>
<p class=MsoNormal><o:p> </o:p></p>
<p class=MsoNormal>Sorry, hit the wrong button. I'm not sure which volume the
equations are in but I'll see if I can find and send to you.<o:p></o:p></p>
<div>
<p class=MsoNormal><o:p> </o:p></p>
</div>
<div>
<p class=MsoNormal style='margin-bottom:12.0pt'>Carol<o:p></o:p></p>
<div>
<p class=MsoNormal>On Sat, Feb 5, 2011 at 12:54 PM, Carol Gardner <<a
href="mailto:cmg750@gmail.com">cmg750@gmail.com</a>> wrote:<o:p></o:p></p>
<p class=MsoNormal>Hi John,<o:p></o:p></p>
<div>
<p class=MsoNormal><o:p> </o:p></p>
</div>
<div>
<p class=MsoNormal style='margin-bottom:12.0pt'>The entering wet bulb
temperature for the outside air. You will normalize the curve around whatever
that is to meet the ARI design conditions, 67F maybe, I can't remember off the
top of my head. There is a full set of equations for equipment under Curve-fit
for HVAC Equipment, but I'<o:p></o:p></p>
<div>
<div>
<div>
<p class=MsoNormal>On Wed, Feb 2, 2011 at 10:17 AM, Grando, John <<a
href="mailto:JGrando@cosentini.com" target="_blank">JGrando@cosentini.com</a>>
wrote:<o:p></o:p></p>
</div>
</div>
<blockquote style='border:none;border-left:solid #CCCCCC 1.0pt;padding:0in 0in 0in 6.0pt;
margin-left:4.8pt;margin-right:0in'>
<div>
<div>
<div>
<div>
<p class=MsoNormal><span style='font-size:10.0pt;font-family:"Arial","sans-serif"'>I'm
basically trying to figure out how eQUEST comes up with the total Electric
consumption for a DX coil. I thought it was the below<o:p></o:p></span></p>
</div>
<div>
<p class=MsoNormal><span style='font-size:10.0pt;font-family:"Arial","sans-serif"'> <o:p></o:p></span></p>
</div>
<div>
<p class=MsoNormal><span style='font-size:10.0pt;font-family:"Arial","sans-serif"'>Total
Capacity * Capacity Curve [T] * Total EIR * EIR Curve [T] * EIR Curve [PLR] but
it's not coming out exactly the same. Does anyone have any input for what
I'm missing. The attached .xls is an example for one day. The total
capacity is 79.983 kBTU/Hr and the EIR is 0.2722.<o:p></o:p></span></p>
</div>
<div>
<p class=MsoNormal><span style='font-size:10.0pt;font-family:"Arial","sans-serif"'> <o:p></o:p></span></p>
</div>
<div>
<p class=MsoNormal><span style='font-size:10.0pt;font-family:"Arial","sans-serif"'> <o:p></o:p></span></p>
</div>
<div>
<p class=MsoNormal><span style='font-family:"Arial","sans-serif"'> </span><span
style='font-size:10.0pt;font-family:"Arial","sans-serif"'><o:p></o:p></span></p>
</div>
<div style='margin-top:5.0pt;margin-bottom:5.0pt'>
<div>
<p class=MsoNormal><b><span style='font-size:10.0pt;font-family:"Arial","sans-serif";
color:blue'>John Grando</span></b><b><span style='font-size:10.0pt;font-family:
"Arial","sans-serif";color:black'> </span></b><b><span style='font-size:10.0pt;
font-family:"Arial","sans-serif";color:blue'>LEED AP</span></b><b><span
style='font-size:10.0pt;font-family:"Arial","sans-serif";color:black'>| </span></b><b><span
style='font-size:10.0pt;font-family:"Arial","sans-serif";color:gray'>Mechanical
Engineer</span></b><span style='font-size:10.0pt;font-family:"Arial","sans-serif";
color:blue'><o:p></o:p></span></p>
</div>
<p class=MsoNormal><span style='font-size:10.0pt;font-family:"Arial","sans-serif";
color:gray'>Phone: 212-615-3705 | Fax: 212-615-3700<br>
</span><span style='font-size:10.0pt;font-family:"Arial","sans-serif";
color:blue'><a href="mailto:jgrando@cosentini.com" target="_blank">jgrando@cosentini.com</a><br>
<br>
</span><b><span style='font-size:10.0pt;font-family:"Arial","sans-serif";
color:gray'>Cosentini Associates - A Tetra Tech Company<br>
</span></b><span style='font-size:10.0pt;font-family:"Arial","sans-serif";
color:gray'>Two Pennsylvania Plaza - Third Floor - New York, NY 10121<br>
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style='font-size:10.0pt;font-family:"Arial","sans-serif"'><o:p></o:p></span></p>
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<div>
<p class=MsoNormal><span style='font-family:"Arial","sans-serif"'> </span><span
style='font-size:10.0pt;font-family:"Arial","sans-serif"'><o:p></o:p></span></p>
</div>
<div>
<p class=MsoNormal><span style='font-family:"Arial","sans-serif"'> </span><span
style='font-size:10.0pt;font-family:"Arial","sans-serif"'><o:p></o:p></span></p>
</div>
<div>
<p class=MsoNormal><span style='font-size:10.0pt;font-family:"Arial","sans-serif"'> <o:p></o:p></span></p>
</div>
<div>
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<p class=MsoNormal><o:p> </o:p></p>
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<p class=MsoNormal style='margin-bottom:12.0pt'>_______________________________________________<br>
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</blockquote>
</div>
<p class=MsoNormal><br>
<br clear=all>
<br>
-- <br>
Carol Gardner PE<o:p></o:p></p>
</div>
</div>
<p class=MsoNormal><br>
<br clear=all>
<br>
-- <br>
Carol Gardner PE<o:p></o:p></p>
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