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<p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";
color:#1F497D'>Hi John,<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'>To answer your first question… For a DX cooling system, my
understanding is that COOL-EIR-FT’s temperatures are the outside drybulb
(at the condenser/heatpump) and the entering wetbulb temperature at the evaporator
(mixed air conditions). This mirrors how packaged equipment efficiencies/capacities
are presented in manufacturers’ literature. See attached discussion
for an example.<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 understand COOL-CAP-FT and COOL-SH-FT curves work from the same
temperatures.<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'>To your second question… I’m with you! <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’d like to see the equation for “hourly electricity
consumption” for an air-cooled DX process written out in its entirety
showing all the affecting – I was searching for something analogous to [</span>Volume
2: Dictionary<span class=d2hbreadcrumbslinkseparator> > </span>HVAC
Components<span class=d2hbreadcrumbslinkseparator> > </span>CHILLER > Chiller
Energy Consumption] <span style='font-size:11.0pt;font-family:"Calibri","sans-serif";
color:#1F497D'>for airside DX cooling systems a while ago and also came up
empty-handed. I have a hunch the effects of the 3 bypass curves (which are
a mystery to me) may have something to do with the hourly calculated total
capacity and/or EIR though… perhaps those need to work their way into
your equation? <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'>Regarding the hourly results you’re using to check your
work… I’m not sure whether those are the correct figures to work
from, but I’d caution to be mindful of the wonky effects of altitude on
calculated capacities/airflows when working with hourly outputs – recent discussion
on the list brought more to light on this topic – and the effects are
more pervasive than I originally thought…<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>
<div>
<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@01CBC2DC.E74789D0" 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>
</div>
<p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";
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>Grando,
John<br>
<b>Sent:</b> Wednesday, February 02, 2011 12:18 PM<br>
<b>To:</b> equest-users@lists.onebuilding.org<br>
<b>Subject:</b> [Equest-users] Curve Coefficients<o:p></o:p></span></p>
</div>
</div>
<p class=MsoNormal><o:p> </o:p></p>
<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'>
<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
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style='font-size:10.0pt;font-family:"Arial","sans-serif";color:gray'>Mechanical
Engineer<br>
</span></b><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'>jgrando@cosentini.com<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>
</span><span style='font-size:10.0pt;font-family:"Arial","sans-serif";
color:blue'><a href="http://www.cosentini.com/">www.cosentini.com</a></span><span
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>
<p class=MsoNormal><br clear=all>
NOTICE OF CONFIDENTIALITY This E-mail message and its attachments (if any) are
intended solely for the use of the addressees hereof. In addition, this message
and the attachments (if any) may contain information that is confidential,
privileged and exempt from disclosure under applicable law. If you are not the
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<p class=MsoNormal style='border:none;padding:0in'><u><span style='font-size:
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<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'><o:p> </o:p></span></p>
<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>Grando,
John<br>
<b>Sent:</b> Wednesday, February 02, 2011 7:55 AM<br>
<b>To:</b> equest-users@lists.onebuilding.org<br>
<b>Subject:</b> [Equest-users] Curve Coefficients<o:p></o:p></span></p>
<p class=MsoNormal><o:p> </o:p></p>
<p class=MsoNormal><span style='font-size:10.0pt;font-family:"Arial","sans-serif"'>Hello,<o:p></o:p></span></p>
<p class=MsoNormal><span style='font-size:10.0pt;font-family:"Arial","sans-serif"'> <o:p></o:p></span></p>
<p class=MsoNormal><span style='font-size:10.0pt;font-family:"Arial","sans-serif"'>For
the curve COOL-EIR-FT the two inputs for a water loop heat pump system are
"entering wetbulb temperature" and "entering water
temperature". I understand that the water temperature is the
condenser water, but is the entering wetbulb temperature for the evaporator
side?<o:p></o:p></span></p>
<p class=MsoNormal><span style='font-size:10.0pt;font-family:"Arial","sans-serif"'> <o:p></o:p></span></p>
<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>
<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"'><o:p></o:p></span></p>
<p class=MsoNormal><span style='font-family:"Arial","sans-serif"'> </span><span
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<p class=MsoNormal><span style='font-size:10.0pt;font-family:"Arial","sans-serif"'> <o:p></o:p></span></p>
<p class=MsoNormal><br clear=all>
NOTICE OF CONFIDENTIALITY This E-mail message and its attachments (if any) are
intended solely for the use of the addressees hereof. In addition, this message
and the attachments (if any) may contain information that is confidential,
privileged and exempt from disclosure under applicable law. If you are not the
intended recipient of this message, you are prohibited from reading,
disclosing, reproducing, distributing, disseminating or otherwise using this
transmission. Delivery of this message to any person other than the intended recipient
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message in error, please promptly notify the sender by reply E-mail and
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