<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="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="country-region"/>
<o:SmartTagType namespaceuri="urn:schemas-microsoft-com:office:smarttags"
name="place"/>
<!--[if !mso]>
<style>
st1\:*{behavior:url(#default#ieooui) }
</style>
<![endif]-->
<style>
<!--
/* Font Definitions */
@font-face
{font-family:Tahoma;
panose-1:2 11 6 4 3 5 4 4 2 4;}
@font-face
{font-family:"Helvetica 55 Roman";}
/* 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;}
p
{mso-margin-top-alt:auto;
margin-right:0in;
mso-margin-bottom-alt:auto;
margin-left:0in;
font-size:12.0pt;
font-family:"Times New Roman";}
span.EmailStyle17
{mso-style-type:personal;
font-family:Arial;
color:windowtext;}
span.EmailStyle19
{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 color=navy face=Arial><span style='font-size:
10.0pt;font-family:Arial;color:navy'>I get that error when I do novel things,
too, and it goes away when I change the loop sizing type from secondary (the
default) to primary. You may get a warning afterwards that says that the
loop is undersized for the connected load. I ignore these warnings since
the loop is sized based on the primary equipment capacity (which should be
sufficient).<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>
<p class=MsoNormal><font size=2 color=navy face=Arial><span style='font-size:
10.0pt;font-family:Arial;color:navy'>I hope this is helpful!<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>
<p class=MsoNormal><font size=2 color=navy face=Arial><span style='font-size:
10.0pt;font-family:Arial;color:navy'>Eric<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><font size=2 color=navy face="Helvetica 55 Roman"><span
style='font-size:10.0pt;color:navy'>Ph: (781) 431-1100 ext 12<br>
Fax: (781) 431-1109<o:p></o:p></span></font></p>
<p class=MsoNormal><font size=2 color=navy face="Helvetica 55 Roman"><span
style='font-size:10.0pt;color:navy'> </span></font><o:p></o:p></p>
</div>
<div>
<div class=MsoNormal align=center style='text-align:center'><font size=3
face="Times New Roman"><span style='font-size:12.0pt;font-family:"Times New Roman"'>
<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 face=Tahoma><span
style='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>Alan Jackson<br>
<b><span style='font-weight:bold'>Sent:</span></b> Monday, August 10, 2009 4:53
PM<br>
<b><span style='font-weight:bold'>To:</span></b> bldg-sim@lists.onebuilding.org<br>
<b><span style='font-weight:bold'>Subject:</span></b> [Bldg-sim] Thermal
Storage Controls</span></font><font size=3 face="Times New Roman"><span
style='font-size:12.0pt;font-family:"Times New Roman"'><o:p></o:p></span></font></p>
</div>
<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 lang=EN-GB style='font-size:
10.0pt;font-family:Arial'>I am modelling the cost benefits of creating chilled
water/ice at night so I have added a thermal storage tank and set up a secondary
chiller and loop to serve the storage tank. I have assigned an on/off schedule
to the TES chiller so that it operates only at night, but I have also added
equipment controls so that it has first priority for cooling. This was my
initial thought on getting it to operate at night but not during the day. I am
getting an error “Ice Water Loop has zero design flow”. At first I
figured this was because I had no size for the storage tank selected so I
started off small and through a 50 ton tank in the capacity field. Still
receiving the same error. Does this have to be sized manually?<o:p></o:p></span></font></p>
<p class=MsoNormal><font size=2 face=Arial><span lang=EN-GB style='font-size:
10.0pt;font-family:Arial'><o:p> </o:p></span></font></p>
<p class=MsoNormal><font size=2 face=Arial><span lang=EN-GB style='font-size:
10.0pt;font-family:Arial'>Here are the controls:<o:p></o:p></span></font></p>
<p class=MsoNormal><font size=2 face=Arial><span lang=EN-GB style='font-size:
10.0pt;font-family:Arial'><o:p> </o:p></span></font></p>
<p class=MsoNormal><font size=2 face=Arial><span lang=EN-GB style='font-size:
10.0pt;font-family:Arial'>"Chiller Controls" =
EQUIP-CTRL <o:p></o:p></span></font></p>
<p class=MsoNormal><font size=2 face=Arial><span lang=EN-GB style='font-size:
10.0pt;font-family:Arial'>
TYPE =
COOLING<o:p></o:p></span></font></p>
<p class=MsoNormal><font size=2 face=Arial><span lang=EN-GB style='font-size:
10.0pt;font-family:Arial'> CIRCULATION-LOOP = "Chilled Water <st1:place
w:st="on">Loop</st1:place>"<o:p></o:p></span></font></p>
<p class=MsoNormal><font size=2 face=Arial><span lang=EN-GB style='font-size:
10.0pt;font-family:Arial'>
CHILLERS-1 = ( "Ice Chiller" )<o:p></o:p></span></font></p>
<p class=MsoNormal><font size=2 face=Arial><span lang=EN-GB style='font-size:
10.0pt;font-family:Arial'> CHILLERS-2
= ( "Air Cooled Chiller 1" )<o:p></o:p></span></font></p>
<p class=MsoNormal><font size=2 face=Arial><span lang=EN-GB style='font-size:
10.0pt;font-family:Arial'> ..<o:p></o:p></span></font></p>
<p class=MsoNormal><font size=2 face=Arial><span lang=EN-GB style='font-size:
10.0pt;font-family:Arial'><o:p> </o:p></span></font></p>
<p class=MsoNormal><font size=2 face=Arial><span lang=EN-GB style='font-size:
10.0pt;font-family:Arial'>and the tank<o:p></o:p></span></font></p>
<p class=MsoNormal><font size=2 face=Arial><span lang=EN-GB style='font-size:
10.0pt;font-family:Arial'><o:p> </o:p></span></font></p>
<p class=MsoNormal><font size=2 face=Arial><span lang=EN-GB style='font-size:
10.0pt;font-family:Arial'>"Ice Storage" = THERMAL-STORAGE <o:p></o:p></span></font></p>
<p class=MsoNormal><font size=2 face=Arial><span lang=EN-GB style='font-size:
10.0pt;font-family:Arial'>
TYPE =
COLD-WATER-TANK<o:p></o:p></span></font></p>
<p class=MsoNormal><font size=2 face=Arial><span lang=EN-GB style='font-size:
10.0pt;font-family:Arial'>
CAPACITY = 600<o:p></o:p></span></font></p>
<p class=MsoNormal><font size=2 face=Arial><span lang=EN-GB style='font-size:
10.0pt;font-family:Arial'>
CHRG-LOOP = "Ice Water <st1:place
w:st="on">Loop</st1:place>"<o:p></o:p></span></font></p>
<p class=MsoNormal><font size=2 face=Arial><span lang=EN-GB style='font-size:
10.0pt;font-family:Arial'>
CHRG-SCH = "Ice Making
Schedule Annual"<o:p></o:p></span></font></p>
<p class=MsoNormal><font size=2 face=Arial><span lang=EN-GB style='font-size:
10.0pt;font-family:Arial'>
DCHRG-LOOP = "Chilled Water <st1:place
w:st="on">Loop</st1:place>"<o:p></o:p></span></font></p>
<p class=MsoNormal><font size=2 face=Arial><span lang=EN-GB style='font-size:
10.0pt;font-family:Arial'> ..<o:p></o:p></span></font></p>
<p class=MsoNormal><font size=2 face=Arial><span lang=EN-GB style='font-size:
10.0pt;font-family:Arial'><o:p> </o:p></span></font></p>
<p class=MsoNormal><font size=2 face=Arial><span lang=EN-GB style='font-size:
10.0pt;font-family:Arial'><o:p> </o:p></span></font></p>
<p class=MsoNormal><font size=2 face=Arial><span lang=EN-GB style='font-size:
10.0pt;font-family:Arial'><o:p> </o:p></span></font></p>
<p class=MsoNormal><font size=2 face=Arial><span lang=EN-GB style='font-size:
10.0pt;font-family:Arial'>Thanks in advance<o:p></o:p></span></font></p>
<p class=MsoNormal><font size=2 face=Arial><span lang=EN-GB style='font-size:
10.0pt;font-family:Arial'><o:p> </o:p></span></font></p>
<p class=MsoNormal><font size=2 face=Arial><span lang=EN-GB style='font-size:
10.0pt;font-family:Arial'><o:p> </o:p></span></font></p>
<p class=MsoNormal><font size=2 face=Arial><span lang=EN-GB style='font-size:
10.0pt;font-family:Arial'><o:p> </o:p></span></font></p>
<div>
<p class=MsoNormal><b><font size=1 face=Arial><span lang=EN-GB
style='font-size:8.0pt;font-family:Arial;font-weight:bold'>Alan Jackson,
LEED® A.P. <o:p></o:p></span></font></b></p>
<p class=MsoNormal><font size=1 face=Arial><span lang=EN-GB style='font-size:
8.0pt;font-family:Arial'>Senior Mechanical Engineer<o:p></o:p></span></font></p>
<p class=MsoNormal><font size=1 face=Arial><span lang=EN-GB style='font-size:
8.0pt;font-family:Arial'>Buro Happold Consulting Engineers, PC<o:p></o:p></span></font></p>
<p class=MsoNormal><font size=1 face=Arial><span lang=EN-GB style='font-size:
8.0pt;font-family:Arial'>100 Broadway <o:p></o:p></span></font></p>
<p class=MsoNormal><st1:place w:st="on"><st1:City w:st="on"><font size=1
face=Arial><span lang=EN-GB style='font-size:8.0pt;font-family:Arial'>New
York</span></font></st1:City><font size=1 face=Arial><span lang=EN-GB
style='font-size:8.0pt;font-family:Arial'>, <st1:State w:st="on">NY</st1:State>
<st1:PostalCode w:st="on">10005</st1:PostalCode></span></font></st1:place><font
size=1 face=Arial><span lang=EN-GB style='font-size:8.0pt;font-family:Arial'><o:p></o:p></span></font></p>
<p class=MsoNormal><st1:place w:st="on"><st1:country-region w:st="on"><font
size=1 face=Arial><span lang=EN-GB style='font-size:8.0pt;font-family:Arial'>USA</span></font></st1:country-region></st1:place><font
size=1 face=Arial><span lang=EN-GB style='font-size:8.0pt;font-family:Arial'><o:p></o:p></span></font></p>
<p class=MsoNormal><font size=1 face=Arial><span lang=EN-GB style='font-size:
8.0pt;font-family:Arial'><o:p> </o:p></span></font></p>
<p class=MsoNormal><font size=1 face=Arial><span lang=EN-GB style='font-size:
8.0pt;font-family:Arial'>Tel: (+1) 212 334 2025<o:p></o:p></span></font></p>
<p class=MsoNormal><font size=1 face=Arial><span lang=EN-GB style='font-size:
8.0pt;font-family:Arial'>Direct: (+1) 212 616 0267<o:p></o:p></span></font></p>
<p class=MsoNormal><font size=1 face=Arial><span lang=EN-GB style='font-size:
8.0pt;font-family:Arial'>Fax: (+1) 212 334 5528<o:p></o:p></span></font></p>
<p class=MsoNormal><font size=1 face=Arial><span lang=EN-GB style='font-size:
8.0pt;font-family:Arial'>Email: <a
href="mailto:alan.jackson@burohappold.com"
title="mailto:alan.jackson@burohappold.com">alan.jackson@burohappold.com</a><br>
<a href="http://www.burohappold.com/" title="http://www.burohappold.com/">www.burohappold.com</a><o:p></o:p></span></font></p>
<p class=MsoNormal><font size=1 face=Arial><span lang=EN-GB style='font-size:
8.0pt;font-family:Arial'><o:p> </o:p></span></font></p>
<p class=MsoNormal><font size=1 color=gray face=Arial><span lang=EN-GB
style='font-size:8.0pt;font-family:Arial;color:gray'>This transmission is
confidential and intended solely for the person or organization to whom it is
correctly addressed. If you are not the intended recipient of this
transmission, you should not take any action in reliance on it. Further, this
transmission may contain confidential design and other information owned by
Buro Happold Consulting Engineers PC. You should not copy, distribute, use,
offer for sale or hire such information or in any way infringe the design and
intellectual property rights of Buro Happold Consulting Engineers PC. It is
intended that communication by email from Buro Happold Consulting Engineers PC
or its employees is limited to communications connected to the services
provided by Buro Happold Consulting Engineers PC. Buro Happold Consulting
Engineers PC accepts no liability for any communications not connected to the
services it provides. Computer viruses may be transmitted or downloaded onto
your computer system via email communication. It is the recipient's
responsibility to take any action necessary to prevent computer viruses being
transmitted in this way. Accordingly, Buro Happold Consulting Engineers PC
disclaims all responsibility which arises directly or indirectly from such
transmission of computer viruses.<o:p></o:p></span></font></p>
</div>
<p class=MsoNormal><font size=2 face="Helvetica 55 Roman"><span lang=EN-GB
style='font-size:10.0pt'><o:p> </o:p></span></font></p>
<p class=MsoNormal style='margin-bottom:12.0pt'><font size=3
face="Times New Roman"><span style='font-size:12.0pt;font-family:"Times New Roman"'><o:p> </o:p></span></font></p>
<p align=center style='text-align:center'><font size=3 face="Times New Roman"><span
style='font-size:12.0pt'>This message has been scanned by <a
href="http://www.mailcontroller.altohiway.com/">MailController</a>.<o:p></o:p></span></font></p>
</div>
</body>
</html>