<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:x="urn:schemas-microsoft-com:office:excel" xmlns="http://www.w3.org/TR/REC-html40">
<head>
<meta http-equiv=Content-Type content="text/html; charset=gb2312">
<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]-->
<style>
<!--
/* Font Definitions */
@font-face
{font-family:SimSun;
panose-1:2 1 6 0 3 1 1 1 1 1;}
@font-face
{font-family:Tahoma;
panose-1:2 11 6 4 3 5 4 4 2 4;}
@font-face
{font-family:"\@SimSun";
panose-1:2 1 6 0 3 1 1 1 1 1;}
/* Style Definitions */
p.MsoNormal, li.MsoNormal, div.MsoNormal
{margin:0in;
margin-bottom:.0001pt;
font-size:12.0pt;
font-family:SimSun;}
a:link, span.MsoHyperlink
{color:blue;
text-decoration:underline;}
a:visited, span.MsoHyperlinkFollowed
{color:purple;
text-decoration:underline;}
span.EmailStyle17
{mso-style-type:personal-reply;
font-family:Arial;
color:navy;}
@page Section1
{size:8.5in 11.0in;
margin:1.0in 1.25in 1.0in 1.25in;}
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:11.0pt;
font-family:Arial'>You can look at the EnergyPlus example file called
5ZoneVAV-Pri-SecLoop.idf as a guide for creating a primary-secondary chilled
water flow configuration in EnergyPlus.<o:p></o:p></span></font></p>
<p class=MsoNormal><font size=2 face=Arial><span style='font-size:11.0pt;
font-family:Arial'><o:p> </o:p></span></font></p>
<p class=MsoNormal><font size=2 face=Arial><span style='font-size:11.0pt;
font-family:Arial'>Basically, you just have to have two pumps in the chilled
water plant loop: a Pump:VariableSpeed object to represent the secondary loop
and a Pump:ConstantSpeed object to represent the primary loop. And then
in the chilled water PlantLoop object, change the Common Pipe Simulation
parameter from blank to ¡°TwoWayCommonPipe¡±<o:p></o:p></span></font></p>
<p class=MsoNormal><font size=2 face=Arial><span style='font-size:11.0pt;
font-family:Arial'><o:p> </o:p></span></font></p>
<p class=MsoNormal><font size=2 face=Arial><span style='font-size:11.0pt;
font-family:Arial'>You may want to run the example file and look at the .svg
output file to see how the plant is arranged and how the node names should match
between the various EnergyPlus objects.<o:p></o:p></span></font></p>
<p class=MsoNormal><font size=2 face=Arial><span style='font-size:11.0pt;
font-family:Arial'><o:p> </o:p></span></font></p>
<p class=MsoNormal><font size=2 face=Arial><span style='font-size:11.0pt;
font-family:Arial'>Use the EngineeringReference document (from the help menu) and
search the document for Primary-Secondary to find the section that explains how
primary-secondary loops are implemented and controlled in EnergyPlus.<o:p></o:p></span></font></p>
<p class=MsoNormal><font size=2 color=navy face=Arial><span style='font-size:
10.0pt;font-family:Arial;color:navy'><o:p> </o:p></span></font></p>
<div>
<p class=MsoNormal><strong><b><font size=2 color=navy face=Arial><span
style='font-size:10.0pt;font-family:Arial;color:navy'>Elyse Malherek</span></font></b></strong><font
size=2 color=navy><span style='font-size:10.0pt;color:navy'><o:p></o:p></span></font></p>
<p class=MsoNormal><font size=2 color=navy face=Arial><span style='font-size:
10.0pt;font-family:Arial;color:navy'>Applications Engineer</span></font><font
size=2 color=navy><span style='font-size:10.0pt;color:navy'><o:p></o:p></span></font></p>
<p class=MsoNormal><font size=2 color=navy face=Arial><span style='font-size:
10.0pt;font-family:Arial;color:navy'>McQuay International</span></font><font
size=2 color=navy><span style='font-size:10.0pt;color:navy'><o:p></o:p></span></font></p>
<p class=MsoNormal><em><i><font size=2 color=navy face=Arial><span
style='font-size:10.0pt;font-family:Arial;color:navy'>a member of DAIKIN group</span></font></i></em><font
size=2 color=navy><span style='font-size:10.0pt;color:navy'><o:p></o:p></span></font></p>
<p class=MsoNormal><font size=2 color=navy face=Arial><span style='font-size:
10.0pt;font-family:Arial;color:navy'>763.553.5379 (Office)</span></font><font
size=2 color=navy><span style='font-size:10.0pt;color:navy'><o:p></o:p></span></font></p>
<p class=MsoNormal><font size=2 color=navy face=Arial><span style='font-size:
10.0pt;font-family:Arial;color:navy'><a href="mailto:elyse.malherek@mcquay.com">elyse.malherek@mcquay.com</a></span></font><font
size=2 face=Arial><span style='font-size:10.0pt;font-family:Arial'><o:p></o:p></span></font></p>
</div>
<div>
<div class=MsoNormal align=center style='text-align:center'><font size=3
face=SimSun><span style='font-size:12.0pt'>
<hr size=2 width="100%" align=center tabindex=-1>
</span></font></div>
<p class=MsoNormal><b><font size=2 face=Tahoma><span style='font-size:10.0pt;
font-family:Tahoma;font-weight:bold'>From:</span></font></b><font size=2
face=Tahoma><span style='font-size:10.0pt;font-family:Tahoma'>
bldg-sim-bounces@lists.onebuilding.org [mailto:bldg-sim-bounces@lists.onebuilding.org]
<b><span style='font-weight:bold'>On Behalf Of </span></b>??<br>
<b><span style='font-weight:bold'>Sent:</span></b> Tuesday, October 25, 2011
1:18 AM<br>
<b><span style='font-weight:bold'>To:</span></b> 'bldg'<br>
<b><span style='font-weight:bold'>Subject:</span></b> [Bldg-sim] Secondary
variable pump modeling</span></font><o:p></o:p></p>
</div>
<p class=MsoNormal><font size=3 face=SimSun><span style='font-size:12.0pt'><o:p> </o:p></span></font></p>
<div>
<p class=MsoNormal><font size=2 color=black face=Arial><span style='font-size:
9.5pt;font-family:Arial;color:black'>in the modeling of pump systems, according
to 90.1, it should be primary/secondary systems with VSD on the secondary
pumping loop.<o:p></o:p></span></font></p>
<div>
<p class=MsoNormal><font size=2 color=black face=Arial><span style='font-size:
9.5pt;font-family:Arial;color:black'>I wonder how to model this in E+.<o:p></o:p></span></font></p>
</div>
<div>
<p class=MsoNormal><font size=2 color=black face=Arial><span style='font-size:
9.5pt;font-family:Arial;color:black'>Besides, how to know the four coefficients
of the variable speed pump? in E+, it is said that the variable speed pump
model is described in the ASHRAE secondary HVAC toolkit, but I don't have
it. <o:p></o:p></span></font></p>
</div>
<div>
<p class=MsoNormal><font size=2 color=black face=Arial><span style='font-size:
9.5pt;font-family:Arial;color:black'>Can anybody give me a hint?<o:p></o:p></span></font></p>
</div>
<div>
<p class=MsoNormal><font size=2 color=black face=Arial><span style='font-size:
9.5pt;font-family:Arial;color:black'>Thanks!<o:p></o:p></span></font></p>
</div>
</div>
<p class=MsoNormal><font size=3 face=SimSun><span style='font-size:12.0pt'><br>
<br>
<br>
<o:p></o:p></span></font></p>
<span title=neteasefooter><span id="netease_mail_footer"></span></span></div>
</body>
</html>