<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:p="urn:schemas-microsoft-com:office:powerpoint" xmlns:a="urn:schemas-microsoft-com:office:access" xmlns:dt="uuid:C2F41010-65B3-11d1-A29F-00AA00C14882" xmlns:s="uuid:BDC6E3F0-6DA3-11d1-A2A3-00AA00C14882" xmlns:rs="urn:schemas-microsoft-com:rowset" xmlns:z="#RowsetSchema" xmlns:b="urn:schemas-microsoft-com:office:publisher" xmlns:ss="urn:schemas-microsoft-com:office:spreadsheet" xmlns:c="urn:schemas-microsoft-com:office:component:spreadsheet" xmlns:odc="urn:schemas-microsoft-com:office:odc" xmlns:oa="urn:schemas-microsoft-com:office:activation" xmlns:html="http://www.w3.org/TR/REC-html40" xmlns:q="http://schemas.xmlsoap.org/soap/envelope/" xmlns:rtc="http://microsoft.com/officenet/conferencing" xmlns:D="DAV:" xmlns:Repl="http://schemas.microsoft.com/repl/" xmlns:mt="http://schemas.microsoft.com/sharepoint/soap/meetings/" xmlns:x2="http://schemas.microsoft.com/office/excel/2003/xml" xmlns:ppda="http://www.passport.com/NameSpace.xsd" xmlns:ois="http://schemas.microsoft.com/sharepoint/soap/ois/" xmlns:dir="http://schemas.microsoft.com/sharepoint/soap/directory/" xmlns:ds="http://www.w3.org/2000/09/xmldsig#" xmlns:dsp="http://schemas.microsoft.com/sharepoint/dsp" xmlns:udc="http://schemas.microsoft.com/data/udc" xmlns:xsd="http://www.w3.org/2001/XMLSchema" xmlns:sub="http://schemas.microsoft.com/sharepoint/soap/2002/1/alerts/" xmlns:ec="http://www.w3.org/2001/04/xmlenc#" xmlns:sp="http://schemas.microsoft.com/sharepoint/" xmlns:sps="http://schemas.microsoft.com/sharepoint/soap/" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns:udcs="http://schemas.microsoft.com/data/udc/soap" xmlns:udcxf="http://schemas.microsoft.com/data/udc/xmlfile" xmlns:udcp2p="http://schemas.microsoft.com/data/udc/parttopart" xmlns:wf="http://schemas.microsoft.com/sharepoint/soap/workflow/" xmlns:dsss="http://schemas.microsoft.com/office/2006/digsig-setup" xmlns:dssi="http://schemas.microsoft.com/office/2006/digsig" xmlns:mdssi="http://schemas.openxmlformats.org/package/2006/digital-signature" xmlns:mver="http://schemas.openxmlformats.org/markup-compatibility/2006" xmlns:m="http://schemas.microsoft.com/office/2004/12/omml" xmlns:mrels="http://schemas.openxmlformats.org/package/2006/relationships" xmlns:spwp="http://microsoft.com/sharepoint/webpartpages" xmlns:ex12t="http://schemas.microsoft.com/exchange/services/2006/types" xmlns:ex12m="http://schemas.microsoft.com/exchange/services/2006/messages" xmlns:pptsl="http://schemas.microsoft.com/sharepoint/soap/SlideLibrary/" xmlns:spsl="http://microsoft.com/webservices/SharePointPortalServer/PublishedLinksService" xmlns:Z="urn:schemas-microsoft-com:" xmlns:st="" 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 12 (filtered medium)">
<style>
<!--
/* Font Definitions */
@font-face
{font-family:Calibri;
panose-1:2 15 5 2 2 2 4 3 2 4;}
@font-face
{font-family:Tahoma;
panose-1:2 11 6 4 3 5 4 4 2 4;}
@font-face
{font-family:Consolas;
panose-1:2 11 6 9 2 2 4 3 2 4;}
/* Style Definitions */
p.MsoNormal, li.MsoNormal, div.MsoNormal
{margin:0in;
margin-bottom:.0001pt;
font-size:11.0pt;
font-family:"Calibri","sans-serif";
color:black;}
a:link, span.MsoHyperlink
{mso-style-priority:99;
color:blue;
text-decoration:underline;}
a:visited, span.MsoHyperlinkFollowed
{mso-style-priority:99;
color:purple;
text-decoration:underline;}
pre
{mso-style-priority:99;
mso-style-link:"HTML Preformatted Char";
margin:0in;
margin-bottom:.0001pt;
font-size:10.0pt;
font-family:"Courier New";
color:black;}
span.EmailStyle17
{mso-style-type:personal;
font-family:"Calibri","sans-serif";
color:windowtext;}
span.HTMLPreformattedChar
{mso-style-name:"HTML Preformatted Char";
mso-style-priority:99;
mso-style-link:"HTML Preformatted";
font-family:Consolas;
color:black;}
span.EmailStyle20
{mso-style-type:personal-reply;
font-family:"Calibri","sans-serif";
color:#1F497D;}
.MsoChpDefault
{mso-style-type:export-only;
font-size:10.0pt;}
@page WordSection1
{size:8.5in 11.0in;
margin:1.0in 1.0in 1.0in 1.0in;}
div.WordSection1
{page:WordSection1;}
-->
</style>
<!--[if gte mso 9]><xml>
<o:shapedefaults v:ext="edit" spidmax="1026" />
</xml><![endif]--><!--[if gte mso 9]><xml>
<o:shapelayout v:ext="edit">
<o:idmap v:ext="edit" data="1" />
</o:shapelayout></xml><![endif]-->
</head>
<body bgcolor=white lang=EN-US link=blue vlink=purple>
<div class=WordSection1>
<p class=MsoNormal><span style='color:#1F497D'>The other heat pumps Type505 and
Type 665 have an air stream, and I need a water-to-water heat pump. <o:p></o:p></span></p>
<p class=MsoNormal><span style='color:#1F497D'><o:p> </o:p></span></p>
<p class=MsoNormal><span style='color:#1F497D'>Is there another heat pump I am
missing?<o:p></o:p></span></p>
<p class=MsoNormal><span style='color:#1F497D'><o:p> </o:p></span></p>
<p class=MsoNormal><span style='color:#1F497D'><o:p> </o:p></span></p>
<div>
<table class=MsoNormalTable border=0 cellpadding=0 width=474 style='width:355.5pt'>
<tr>
<td width=167 valign=top style='width:125.25pt;padding:.75pt .75pt .75pt .75pt'>
<p class=MsoNormal style='mso-margin-top-alt:auto;mso-margin-bottom-alt:auto'><b><span
style='font-size:10.0pt;color:#660000;text-transform:uppercase'>Fred Betz</span></b><b><span
style='font-size:9.0pt;color:#333333'> </span></b><span
style='font-size:9.0pt;color:#333333'>PhD., LEED AP <br>
</span><span style='font-size:10.0pt;color:#333333;text-transform:uppercase'>Sustainable
Systems Analyst</span><span style='font-size:9.0pt;color:#333333'><o:p></o:p></span></p>
</td>
<td width=10 valign=top style='width:7.5pt;padding:.75pt .75pt .75pt .75pt'>
<p class=MsoNormal><span style='font-size:9.0pt;color:#333333'> <o:p></o:p></span></p>
</td>
<td width=283 valign=top style='width:212.25pt;padding:.75pt .75pt .75pt .75pt'>
<p class=MsoNormal style='mso-margin-top-alt:auto;mso-margin-bottom-alt:auto'><b><span
style='font-size:9.0pt;color:#660000'>AEI</span></b><span style='font-size:
9.0pt;color:#333333'> | AFFILIATED ENGINEERS, INC. <br>
5802 Research Park Blvd. | Madison, WI 53719<br>
<br>
</span><span style='font-size:9.0pt;color:#660000'>P: 608.236.1175 | F:
608.238.2614</span><span style='font-size:9.0pt;color:#333333'> <br>
</span><span style='font-size:9.0pt;color:#660000'><a
href="mailto:fbetz@aeieng.com"><span style='color:#660000;text-decoration:
none'>fbetz@aeieng.com</span></a> | </span><b><span
style='font-size:9.0pt;color:#660000'><a href="http://www.aeieng.com/"><span
style='color:#660000;text-decoration:none'>www.aeieng.com</span></a></span></b><span
style='font-size:9.0pt;color:#333333'> <o:p></o:p></span></p>
</td>
</tr>
</table>
<p class=MsoNormal><span style='color:#1F497D'><o:p> </o:p></span></p>
</div>
<p class=MsoNormal><span style='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";
color:windowtext'>From:</span></b><span style='font-size:10.0pt;font-family:
"Tahoma","sans-serif";color:windowtext'> David BRADLEY
[mailto:d.bradley@tess-inc.com] <br>
<b>Sent:</b> Monday, October 18, 2010 10:52 AM<br>
<b>To:</b> Fred Betz<br>
<b>Cc:</b> TRNSYS-users@cae.wisc.edu<br>
<b>Subject:</b> Re: [TRNSYS-users] Partload operation of Water to Water Heat
Pump (Type 668)<o:p></o:p></span></p>
</div>
</div>
<p class=MsoNormal><o:p> </o:p></p>
<p class=MsoNormal>Fred,<br>
Type668 models a single stage heat pump. There are other versions of the
heat pump model designed to simulate the performance of multistage heat pumps
and there are controller models to go with them.<br>
Best,<br>
David<br>
<br>
<br>
On 10/15/2010 14:04, Fred Betz wrote: <o:p></o:p></p>
<p class=MsoNormal>Does anyone know of a way to make part load operation work
in Type668?<o:p></o:p></p>
<p class=MsoNormal> <o:p></o:p></p>
<p class=MsoNormal>The performance maps are based on entering conditions on the
evaporator and condenser side. However, there is no direct way to make type668
run at 10%, 50%, etc.<o:p></o:p></p>
<p class=MsoNormal> <o:p></o:p></p>
<p class=MsoNormal>The work around I have used in the past is dividing the
performance map by 50% to reflect two stages of operation and so on. Then
setting up valves and controls to route the flow correctly. <o:p></o:p></p>
<p class=MsoNormal> <o:p></o:p></p>
<p class=MsoNormal>The HP I am modeling has a 10:1 turn down ratio and I don’t
want to make 10 heat pumps each with 10% of the total capacity of a single
unit. <o:p></o:p></p>
<p class=MsoNormal> <o:p></o:p></p>
<p class=MsoNormal>Please advise,<o:p></o:p></p>
<p class=MsoNormal> <o:p></o:p></p>
<p class=MsoNormal>Fred<o:p></o:p></p>
<p class=MsoNormal> <o:p></o:p></p>
<p class=MsoNormal> <o:p></o:p></p>
<table class=MsoNormalTable border=0 cellpadding=0 width=474 style='width:355.5pt'>
<tr>
<td width=167 valign=top style='width:125.25pt;padding:.75pt .75pt .75pt .75pt'>
<p class=MsoNormal><b><span style='font-size:10.0pt;color:#660000;text-transform:
uppercase'>Fred Betz</span></b><b><span style='font-size:9.0pt;color:#333333'>
</span></b><span style='font-size:9.0pt;color:#333333'>PhD., LEED AP <br>
</span><span style='font-size:10.0pt;color:#333333;text-transform:uppercase'>Sustainable
Systems Analyst</span><o:p></o:p></p>
</td>
<td width=10 valign=top style='width:7.5pt;padding:.75pt .75pt .75pt .75pt'>
<p class=MsoNormal><span style='font-size:9.0pt;color:#333333'> </span><o:p></o:p></p>
</td>
<td width=283 valign=top style='width:212.25pt;padding:.75pt .75pt .75pt .75pt'>
<p class=MsoNormal><b><span style='font-size:9.0pt;color:#660000'>AEI</span></b><span
style='font-size:9.0pt;color:#333333'> | AFFILIATED ENGINEERS, INC. <br>
5802 Research Park Blvd. | Madison, WI 53719<br>
<br>
</span><span style='font-size:9.0pt;color:#660000'>P: 608.236.1175 | F:
608.238.2614</span><span style='font-size:9.0pt;color:#333333'> <br>
</span><span style='font-size:9.0pt;color:#660000'><a
href="mailto:fbetz@aeieng.com"><span style='color:#660000;text-decoration:
none'>fbetz@aeieng.com</span></a> | <b><a
href="http://www.aeieng.com/"><span style='color:#660000;text-decoration:
none'>www.aeieng.com</span></a></b></span><span style='font-size:9.0pt;
color:#333333'> </span><o:p></o:p></p>
</td>
</tr>
</table>
<p class=MsoNormal> <o:p></o:p></p>
<p class=MsoNormal> <o:p></o:p></p>
<pre><o:p> </o:p></pre><pre><o:p> </o:p></pre><pre>_______________________________________________<o:p></o:p></pre><pre>TRNSYS-users mailing list<o:p></o:p></pre><pre><a
href="mailto:TRNSYS-users@cae.wisc.edu">TRNSYS-users@cae.wisc.edu</a><o:p></o:p></pre><pre><a
href="https://www-old.cae.wisc.edu/mailman/listinfo/trnsys-users">https://www-old.cae.wisc.edu/mailman/listinfo/trnsys-users</a><o:p></o:p></pre><pre> <o:p></o:p></pre>
<p class=MsoNormal><span style='font-size:12.0pt;font-family:"Times New Roman","serif"'><br>
<br>
<o:p></o:p></span></p>
<pre>-- <o:p></o:p></pre><pre>***************************<o:p></o:p></pre><pre>David BRADLEY<o:p></o:p></pre><pre>Principal<o:p></o:p></pre><pre>Thermal Energy Systems Specialists, LLC<o:p></o:p></pre><pre>22 North Carroll Street - suite 370<o:p></o:p></pre><pre>Madison, WI 53703 USA<o:p></o:p></pre><pre><o:p> </o:p></pre><pre>P:+1.608.274.2577<o:p></o:p></pre><pre>F:+1.608.278.1475<o:p></o:p></pre><pre><a
href="mailto:d.bradley@tess-inc.com">d.bradley@tess-inc.com</a><o:p></o:p></pre><pre><o:p> </o:p></pre><pre><a
href="http://www.tess-inc.com">http://www.tess-inc.com</a><o:p></o:p></pre><pre><a
href="http://www.trnsys.com">http://www.trnsys.com</a><o:p></o:p></pre></div>
</body>
</html>