<html 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)">
<o:SmartTagType namespaceuri="urn:schemas-microsoft-com:office:smarttags"
name="PersonName"/>
<!--[if !mso]>
<style>
st1\:*{behavior:url(#default#ieooui) }
</style>
<![endif]-->
<style>
<!--
/* Font Definitions */
@font-face
{font-family:"Helvetica 55 Roman";
panose-1:2 11 5 0 0 0 0 0 0 0;}
/* Style Definitions */
p.MsoNormal, li.MsoNormal, div.MsoNormal
{margin:0in;
margin-bottom:.0001pt;
font-size:10.0pt;
font-family:"Helvetica 55 Roman";}
a:link, span.MsoHyperlink
{color:blue;
text-decoration:underline;}
a:visited, span.MsoHyperlinkFollowed
{color:purple;
text-decoration:underline;}
span.EmailStyle17
{mso-style-type:personal;
font-family:Arial;
color:windowtext;}
span.EmailStyle18
{mso-style-type:personal-reply;
font-family:Arial;
color:navy;}
@page Section1
{size:612.1pt 792.1pt;
margin:42.55pt 42.55pt 42.55pt 85.05pt;}
div.Section1
{page:Section1;}
-->
</style>
</head>
<body lang=EN-US link=blue vlink=purple>
<div class=Section1>
<p class=MsoNormal><font size=2 face="Helvetica 55 Roman"><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;
font-family:Arial'>Hi all,<o:p></o:p></span></font></p>
<p class=MsoNormal><font size=2 face=Arial><span style='font-size:10.0pt;
font-family:Arial'><o:p> </o:p></span></font></p>
<p class=MsoNormal><font size=2 face=Arial><span style='font-size:10.0pt;
font-family:Arial'>First of all I would like to thank everyone in this forum
for providing very valuable information to less experienced LEED modelers
energy like myself.<o:p></o:p></span></font></p>
<p class=MsoNormal><font size=2 face=Arial><span style='font-size:10.0pt;
font-family:Arial'><o:p> </o:p></span></font></p>
<p class=MsoNormal><font size=2 face=Arial><span style='font-size:10.0pt;
font-family:Arial'>I have a short question regarding the ASHRAE 90.1 Baseline
pump power. Currently, I am modeling a VAV system with two central plant
chillers. The cooling load is more than 300 tons therefore Appendix G says
model the baseline chilled water loop as primary – secondary with a
variable speed secondary pump. Also the pump power should be 22 W/gpm.<o:p></o:p></span></font></p>
<p class=MsoNormal><font size=2 face=Arial><span style='font-size:10.0pt;
font-family:Arial'><o:p> </o:p></span></font></p>
<p class=MsoNormal><font size=2 face=Arial><span style='font-size:10.0pt;
font-family:Arial'>Now, I have 3 pumps in my chilled water loop (2 primary
pumps and a secondary pump). So should I set all of these pumps to have a pump
power of 22 W/gpm? It feels like cheating if I assign 22 W/gpm pump power to
the primary pumps as the head loss in primary loop would be much less than the
secondary loop in general. What do you think?<o:p></o:p></span></font></p>
<p class=MsoNormal><font size=2 face=Arial><span style='font-size:10.0pt;
font-family:Arial'><o:p> </o:p></span></font></p>
<p class=MsoNormal><font size=2 face=Arial><span style='font-size:10.0pt;
font-family:Arial'>I really appreciate any inputs in this matter. <o:p></o:p></span></font></p>
<p class=MsoNormal><font size=2 face=Arial><span style='font-size:10.0pt;
font-family:Arial'><o:p> </o:p></span></font></p>
<p class=MsoNormal><font size=2 face=Arial><span style='font-size:10.0pt;
font-family:Arial'>Thanks in advance for all the responses.<o:p></o:p></span></font></p>
<p class=MsoNormal><font size=2 face=Arial><span style='font-size:10.0pt;
font-family:Arial'><o:p> </o:p></span></font></p>
<p class=MsoNormal><font size=2 face=Arial><span style='font-size:10.0pt;
font-family:Arial'><o:p> </o:p></span></font></p>
<p class=MsoNormal><st1:PersonName w:st="on"><font size=2 color=gray
face=Arial><span style='font-size:10.0pt;font-family:Arial;color:gray'>Alper
Erten</span></font></st1:PersonName><font color=gray face=Arial><span
style='font-family:Arial;color:gray'><o:p></o:p></span></font></p>
<p class=MsoNormal><font size=3 face=Arial><span style='font-size:12.0pt;
font-family:Arial'><o:p> </o:p></span></font></p>
<p class=MsoNormal><font size=2 color=gray face=Arial><span style='font-size:
10.0pt;font-family:Arial;color:gray'>CoSA Engineer, LEED®AP<o:p></o:p></span></font></p>
<p class=MsoNormal><font size=2 color=gray face=Arial><span style='font-size:
10.0pt;font-family:Arial;color:gray'>Buro Happold Consulting Engineers Inc.<o:p></o:p></span></font></p>
<p class=MsoNormal><font size=2 face=Arial><span style='font-size:10.0pt;
font-family:Arial'><a href="http://www.burohappold.com/"><font color=gray><span
style='color:gray'>www.burohappold.com</span></font></a></span></font><font
size=3 face=Arial><span style='font-size:12.0pt;font-family:Arial'><o:p></o:p></span></font></p>
<p class=MsoNormal><font size=2 face="Helvetica 55 Roman"><span
style='font-size:10.0pt'><o:p> </o:p></span></font></p>
</div>
<br><br>
<P align=center>This message has been scanned by <A href="http://www.mailcontroller.altohiway.com/">MailController</A>.</P>
</body>
</html>