<html xmlns:v="urn:schemas-microsoft-com:vml" xmlns:o="urn:schemas-microsoft-com:office:office" xmlns:w="urn:schemas-microsoft-com:office:word" xmlns:st1="urn:schemas-microsoft-com:office:smarttags" xmlns="http://www.w3.org/TR/REC-html40">
<head>
<META HTTP-EQUIV="Content-Type" CONTENT="text/html; charset=us-ascii">
<meta name=Generator content="Microsoft Word 11 (filtered medium)">
<!--[if !mso]>
<style>
v\:* {behavior:url(#default#VML);}
o\:* {behavior:url(#default#VML);}
w\:* {behavior:url(#default#VML);}
.shape {behavior:url(#default#VML);}
</style>
<![endif]--><o:SmartTagType
namespaceuri="urn:schemas-microsoft-com:office:smarttags" name="place"/>
<o:SmartTagType namespaceuri="urn:schemas-microsoft-com:office:smarttags"
name="PostalCode"/>
<o:SmartTagType namespaceuri="urn:schemas-microsoft-com:office:smarttags"
name="State"/>
<o:SmartTagType namespaceuri="urn:schemas-microsoft-com:office:smarttags"
name="City"/>
<o:SmartTagType namespaceuri="urn:schemas-microsoft-com:office:smarttags"
name="Street"/>
<o:SmartTagType namespaceuri="urn:schemas-microsoft-com:office:smarttags"
name="address"/>
<!--[if !mso]>
<style>
st1\:*{behavior:url(#default#ieooui) }
</style>
<![endif]-->
<style>
<!--
/* Font Definitions */
@font-face
{font-family:"Arial Bold";
panose-1:2 11 7 4 2 2 2 2 2 4;}
/* Style Definitions */
p.MsoNormal, li.MsoNormal, div.MsoNormal
{margin:0in;
margin-bottom:.0001pt;
font-size:11.0pt;
font-family:Arial;}
p.MsoHeader, li.MsoHeader, div.MsoHeader
{margin:0in;
margin-bottom:.0001pt;
font-size:11.0pt;
font-family:Arial;}
p.MsoFooter, li.MsoFooter, div.MsoFooter
{margin:0in;
margin-bottom:.0001pt;
font-size:8.0pt;
font-family:Arial;}
a:link, span.MsoHyperlink
{color:blue;
text-decoration:underline;}
a:visited, span.MsoHyperlinkFollowed
{color:purple;
text-decoration:underline;}
pre
{margin:0in;
margin-bottom:.0001pt;
font-size:10.0pt;
font-family:"Courier New";}
span.EmailStyle19
{mso-style-type:personal-compose;
font-family:Arial;
color:windowtext;}
/* Page Definitions */
@page
{mso-endnote-separator:url("cid:header.htm\@01C8BCF0.83622780") es;
mso-endnote-continuation-separator:url("cid:header.htm\@01C8BCF0.83622780") ecs;}
@page Section1
{size:8.5in 11.0in;
margin:1.0in 1.25in .75in 1.25in;
mso-footer:url("cid:header.htm\@01C8BCF0.83622780") f1;}
div.Section1
{page:Section1;}
-->
</style>
</head>
<body lang=EN-US link=blue vlink=purple>
<div class=Section1>
<p class=MsoNormal><font size=2 face=Arial><span style='font-size:10.0pt'>Hi, <o:p></o:p></span></font></p>
<p class=MsoNormal><font size=2 face=Arial><span style='font-size:10.0pt'>I
have a question about the chiller EIR curve in eQUEST. In the attachment, there
are two curves of chiller EIR. One is the kWH/Ton curve from chiller
manufacture. One the normalized EIR curve from eQUEST default. These two curves
showed quite big difference when the chiller PLR drops to 30% or lower. <o:p></o:p></span></font></p>
<p class=MsoNormal><font size=2 face=Arial><span style='font-size:10.0pt'><o:p> </o:p></span></font></p>
<p class=MsoNormal><font size=2 face=Arial><span style='font-size:10.0pt'>In my
simulation, I used manufacturer data and this equation to calculate the EIR,
and then normalized the EIR to get the curve. <o:p></o:p></span></font></p>
<p class=MsoNormal><font size=2 face="Courier New"><span style='font-size:10.0pt;
font-family:"Courier New"'>Cooling EIR = 0.941 * (1/(SEER/3.413))<o:p></o:p></span></font></p>
<p class=MsoNormal><font size=2 face=Arial><span style='font-size:10.0pt'><o:p> </o:p></span></font></p>
<p class=MsoNormal><font size=2 face=Arial><span style='font-size:10.0pt'>Because
about 20% of the chiller hours ran at less 20% of PLR, using two different
curves (calculated manufacturer curve and eQUEST default curve) caused huge
difference of chiller electricity consumption. So my question is which curve is
right for the chiller performance? Thank you very much.<o:p></o:p></span></font></p>
<p class=MsoNormal><font size=2 face=Arial><span style='font-size:10.0pt'><o:p> </o:p></span></font></p>
<p class=MsoNormal><font size=2 face=Arial><span style='font-size:10.0pt'><o:p> </o:p></span></font></p>
<div>
<table class=MsoTableGrid border=0 cellspacing=0 cellpadding=0
style='border-collapse:collapse'>
<tr>
<td width=380 colspan=2 valign=top style='width:285.3pt;padding:0in 5.4pt 0in 5.4pt'>
<p class=MsoNormal><b><font size=2 color="#333333" face=Arial><span
style='font-size:11.0pt;color:#333333;font-weight:bold'>Xiaowei Xu</span></font></b><b><font
size=3 color="#333333" face="Arial Bold"><span style='font-size:12.0pt;
font-family:"Arial Bold";color:#333333;font-weight:bold'><o:p></o:p></span></font></b></p>
<p class=MsoNormal><i><font size=2 color=gray face=Arial><span
style='font-size:11.0pt;color:gray;font-style:italic'>Engineer</span></font></i><font
color=black><span style='color:black'> </span></font><i><font
color=gray><span style='color:gray;font-style:italic'><o:p></o:p></span></font></i></p>
<p class=MsoNormal><b><font size=2 color="#333333" face=Arial><span
style='font-size:11.0pt;color:#333333;font-weight:bold'><img width=25
height=20 id="_x0000_i1030" src="cid:image001.gif@01C8BCF0.83622780"></span> </font></b><b><font
color="#333333"><span style='color:#333333;position:relative;top:-3.0pt;
mso-text-raise:3.0pt;font-weight:bold'>FLACK</span></font></b><b><font
color=black face="Arial Bold"><span style='font-family:"Arial Bold";
color:black;position:relative;top:-3.0pt;mso-text-raise:3.0pt;font-weight:
bold'> </span></font></b><b><font color="#999999" face="Arial Bold"><span
style='font-family:"Arial Bold";color:#999999;position:relative;top:-3.0pt;
mso-text-raise:3.0pt;font-weight:bold'>+</span></font></b><b><font
color=black face="Arial Bold"><span style='font-family:"Arial Bold";
color:black;position:relative;top:-3.0pt;mso-text-raise:3.0pt;font-weight:
bold'> </span></font></b><b><font color="#333333"><span style='color:#333333;
position:relative;top:-3.0pt;mso-text-raise:3.0pt;font-weight:bold'>KURTZ</span></font></b><font
color="#333333"><span style='color:#333333'><o:p></o:p></span></font></p>
</td>
</tr>
<tr>
<td width=213 valign=top style='width:160.0pt;padding:0in 5.4pt 0in 5.4pt'>
<p class=MsoNormal><font size=2 color="#333333" face=Arial><span
style='font-size:11.0pt;color:#333333'>475 <st1:Street w:st="on"><st1:address
w:st="on">Fifth Avenue</st1:address></st1:Street></span></font><font
color=black><span style='color:black'><o:p></o:p></span></font></p>
<p class=MsoNormal><st1:place w:st="on"><st1:City w:st="on"><font size=2
color="#333333" face=Arial><span style='font-size:11.0pt;color:#333333'>New
York</span></font></st1:City><font color="#333333"><span style='color:#333333'>,
<st1:State w:st="on">NY</st1:State> <st1:PostalCode w:st="on">10017</st1:PostalCode></span></font></st1:place><font
color="#333333"><span style='color:#333333'><o:p></o:p></span></font></p>
<p class=MsoNormal><font size=2 color=black face=Arial><span
style='font-size:11.0pt;color:black'><o:p> </o:p></span></font></p>
<p class=MsoNormal><u><font size=2 color=black face=Arial><span
style='font-size:11.0pt;color:black'><a href="http://www.flackandkurtz.com/"><font
color=black><span style='color:black'>http://www.flackandkurtz.com</span></font></a></span></font></u><font
color=black><span style='color:black'> <o:p></o:p></span></font></p>
</td>
<td width=167 valign=top style='width:125.3pt;padding:0in 5.4pt 0in 5.4pt'>
<p class=MsoNormal><font size=2 color="#333333" face=Arial><span
style='font-size:11.0pt;color:#333333'>212.532.9600 </span></font><st1:place
w:st="on"><b><font color=black><span style='color:black;font-weight:bold'>Main</span></font></b></st1:place><b><font
color=black><span style='color:black;font-weight:bold'><o:p></o:p></span></font></b></p>
<p class=MsoNormal><font size=2 color="#333333" face=Arial><span
style='font-size:11.0pt;color:#333333'>212.951.2662 </span></font><b><font
color=black><span style='color:black;font-weight:bold'>Direct<o:p></o:p></span></font></b></p>
<p class=MsoNormal><font size=2 color="#333333" face=Arial><span
style='font-size:11.0pt;color:#333333'>212.689.7489</span></font><font
color=black><span style='color:black'> <b><span style='font-weight:bold'>Fax<br>
</span></b></span></font><a href="mailto:xiaowei.xu@ny.fk.com">xiaowei.xu@ny.fk.com</a><o:p></o:p></p>
</td>
</tr>
<tr>
<td width=380 colspan=2 valign=top style='width:285.3pt;padding:0in 5.4pt 0in 5.4pt'>
<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='text-align:justify;border:none;padding:0in'><b><i><font
size=2 color="#333333" face=Arial><span style='font-size:10.0pt;color:#333333;
font-weight:bold;font-style:italic'>Ensuring that today’s built
environment preserves the natural environment in which we live.</span></font></i></b><font
size=2 color=black><span style='font-size:10.0pt;color:black'><o:p></o:p></span></font></p>
</div>
<p class=MsoNormal style='text-align:justify'><font size=1 color=gray
face=Arial><span style='font-size:8.0pt;color:gray'>This e-mail may contain
confidential and/or privileged information. If you are not the intended
recipient (or have received this e-mail in error) please notify the sender
immediately and destroy this e-mail. Any unauthorized copying, disclosure or
distribution of the material in this email is strictly forbidden.</span></font><font
size=2 color="#333333"><span style='font-size:10.0pt;color:#333333'><o:p></o:p></span></font></p>
</td>
</tr>
</table>
</div>
<p class=MsoNormal><font size=2 face=Arial><o:p> </o:p></font></p>
</div>
</body>
</html>