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<p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";
color:#1F497D'>Steven<o:p></o:p></span></p>
<p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";
color:#1F497D'><o:p> </o:p></span></p>
<p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";
color:#1F497D'>I would not try and eliminate pumping power all together. <o:p></o:p></span></p>
<p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";
color:#1F497D'>To minimise reduce pressure to a low level, apply good mech
efficiency so not much heat is added to the loop by the pump.<o:p></o:p></span></p>
<p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";
color:#1F497D'>Then at the end of the process simply do not include pumping
energy in your results (i.e. working with totals, subtract the heating water
pump energy from the total energy use).<o:p></o:p></span></p>
<p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";
color:#1F497D'>These values can be taken from the sim file. Or the approach I would
take is to get an hourly or monthly output file for the all parameters you wish
to monitor.<o:p></o:p></span></p>
<p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";
color:#1F497D'><o:p> </o:p></span></p>
<p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";
color:#1F497D'>Cheers<o:p></o:p></span></p>
<p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";
color:#1F497D'>Jack<o:p></o:p></span></p>
<p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";
color:#1F497D'><o:p> </o:p></span></p>
<div>
<p class=MsoNormal><b><span style='font-size:10.0pt;font-family:"Arial","sans-serif";
color:#1F497D'>Jack Manning</span></b><span style='font-size:11.0pt;font-family:
"Calibri","sans-serif";color:#1F497D'><o:p></o:p></span></p>
<p class=MsoNormal><span style='font-size:10.0pt;font-family:"Arial","sans-serif";
color:#1F497D'>Mechanical Engineer<o:p></o:p></span></p>
<p class=MsoNormal><span style='font-size:10.0pt;font-family:"Arial","sans-serif";
color:#1F497D'>MEP - Sustainable Design</span><span style='font-size:11.0pt;
font-family:"Calibri","sans-serif";color:#1F497D'><o:p></o:p></span></p>
<p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";
color:#1F497D'> <o:p></o:p></span></p>
<p class=MsoNormal><b><span style='font-size:10.0pt;font-family:"Arial","sans-serif";
color:#1F497D'>Arup</span></b><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";
color:#1F497D'><o:p></o:p></span></p>
<p class=MsoNormal><span style='font-size:10.0pt;font-family:"Arial","sans-serif";
color:#1F497D'>Level 10, 201 Kent Street, Sydney NSW 2000</span><span
style='font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D'><o:p></o:p></span></p>
<p class=MsoNormal><span style='font-size:10.0pt;font-family:"Arial","sans-serif";
color:#1F497D'>T +61 (0)2 9320 9634</span><span style='font-size:11.0pt;
font-family:"Calibri","sans-serif";color:#1F497D'><o:p></o:p></span></p>
<p class=MsoNormal><span style='font-size:10.0pt;font-family:"Arial","sans-serif";
color:#1F497D'>F +61 (0)2 9320 9321</span><span style='font-size:11.0pt;
font-family:"Calibri","sans-serif";color:#1F497D'><o:p></o:p></span></p>
<p class=MsoNormal><span style='font-size:10.0pt;font-family:"Arial","sans-serif";
color:#1F497D'>M +61 (0)434 399 543</span><span style='font-size:11.0pt;
font-family:"Calibri","sans-serif";color:#1F497D'><o:p></o:p></span></p>
<p class=MsoNormal><span style='font-size:10.0pt;font-family:"Arial","sans-serif";
color:#1F497D'><a href="http://www.arup.com/" title="http://www.arup.com/">www.arup.com</a></span><span
style='font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D'><o:p></o:p></span></p>
<p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";
color:#1F497D'> <o:p></o:p></span></p>
<p class=MsoNormal><span style='font-size:10.0pt;font-family:"Arial","sans-serif";
color:#1F497D'>We shape a better world</span><span style='font-size:11.0pt;
font-family:"Calibri","sans-serif";color:#1F497D'><o:p></o:p></span></p>
</div>
<p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";
color:#1F497D'><o:p> </o:p></span></p>
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<div style='border:none;border-top:solid #B5C4DF 1.0pt;padding:3.0pt 0cm 0cm 0cm'>
<p class=MsoNormal><b><span lang=EN-US style='font-size:10.0pt;font-family:
"Tahoma","sans-serif";color:windowtext'>From:</span></b><span lang=EN-US
style='font-size:10.0pt;font-family:"Tahoma","sans-serif";color:windowtext'>
equest-users-bounces@lists.onebuilding.org
[mailto:equest-users-bounces@lists.onebuilding.org] <b>On Behalf Of </b>Xavier
García Casals<br>
<b>Sent:</b> Wednesday, 15 October 2008 3:32 AM<br>
<b>To:</b> Steven Savich<br>
<b>Cc:</b> equest-users@lists.onebuilding.org<br>
<b>Subject:</b> Re: [Equest-users] Steam loop pumping energy<o:p></o:p></span></p>
</div>
</div>
<p class=MsoNormal><o:p> </o:p></p>
<p class=MsoNormal>Steven,<br>
The program will calculate one of the pump input parameters acording to the
relationship between power, efficiency, head and flow. Try assigning an almost
0 kW power, and leave another parameter free (for example head) for the
programe to use the formula to calculate this parameter instead of overriding
the almost 0 kW power.<br>
<br>
En/na Steven Savich ha escrit: <o:p></o:p></p>
<p class=MsoNormal><span style='font-size:10.0pt;font-family:"Arial","sans-serif";
color:navy'>David,</span><o:p></o:p></p>
<p class=MsoNormal><span style='font-size:10.0pt;font-family:"Arial","sans-serif";
color:navy'> </span><o:p></o:p></p>
<p class=MsoNormal><span style='font-size:10.0pt;font-family:"Arial","sans-serif";
color:navy'>Tried that. The program ignores the 0 pump power input and
calculates the required power, even with actual flow and head input. PS-C
report still shows pump energy consumption by the heating water loop pump.</span><o:p></o:p></p>
<p class=MsoNormal><span style='font-size:10.0pt;font-family:"Arial","sans-serif";
color:navy'> </span><o:p></o:p></p>
<p class=MsoNormal><span style='font-size:10.0pt;font-family:"Arial","sans-serif";
color:navy'>FYI I’m using eQuest ver 3-61e. Do later or earlier
versions allow this 0 kW workaround?</span><o:p></o:p></p>
<p class=MsoNormal><span style='font-size:10.0pt;font-family:"Arial","sans-serif";
color:navy'> </span><o:p></o:p></p>
<p class=MsoNormal><span style='font-size:10.0pt;font-family:"Arial","sans-serif";
color:navy'>Steven</span><o:p></o:p></p>
<p class=MsoNormal><span style='font-size:10.0pt;font-family:"Arial","sans-serif";
color:navy'> </span><o:p></o:p></p>
<div>
<p class=MsoNormal><span style='font-family:"Bookman Old Style","serif";
color:navy'>Steven Savich</span><o:p></o:p></p>
<p class=MsoNormal><span style='font-size:10.0pt;font-family:"Bookman Old Style","serif";
color:navy'>Systems West Engineers</span><o:p></o:p></p>
<p class=MsoNormal><span style='font-size:10.0pt;font-family:"Bookman Old Style","serif";
color:navy'>411 High Street</span><o:p></o:p></p>
<p class=MsoNormal><span style='font-size:10.0pt;font-family:"Bookman Old Style","serif";
color:navy'>Eugene, OR 97401-2427</span><o:p></o:p></p>
<p class=MsoNormal><span style='font-size:10.0pt;font-family:"Bookman Old Style","serif";
color:navy'>(541) 342-7210</span><o:p></o:p></p>
<p class=MsoNormal><span style='font-size:10.0pt;font-family:"Bookman Old Style","serif";
color:navy'>(541) 342-7220 (fax)</span><o:p></o:p></p>
</div>
<div>
<div class=MsoNormal align=center style='text-align:center'>
<hr size=3 width="100%" align=center>
</div>
<p class=MsoNormal><b><span style='font-size:10.0pt;font-family:"Tahoma","sans-serif"'>From:</span></b><span
style='font-size:10.0pt;font-family:"Tahoma","sans-serif"'> David S Eldridge [<a
href="mailto:DSE@grummanbutkus.com">mailto:DSE@grummanbutkus.com</a>] <br>
<b>Sent:</b> Tuesday, October 14, 2008 9:09 AM<br>
<b>To:</b> 'Steven Savich'<br>
<b>Subject:</b> RE: [Equest-users] Steam loop pumping energy</span><o:p></o:p></p>
</div>
<p class=MsoNormal> <o:p></o:p></p>
<p class=MsoNormal>You can use the actual flow and head so the program
doesn’t crash, but enter a pump power of 0 kW. “Magic”
pump motors.<o:p></o:p></p>
<p class=MsoNormal> <o:p></o:p></p>
<div style='border:none;border-left:solid windowtext 1.5pt;padding:0cm 0cm 0cm 4.0pt;
border-color:-moz-use-text-color -moz-use-text-color -moz-use-text-color blue'>
<div>
<div style='border:none;border-top:solid windowtext 1.0pt;padding:3.0pt 0cm 0cm 0cm;
border-color:-moz-use-text-color -moz-use-text-color'>
<p class=MsoNormal><b><span style='font-size:10.0pt;font-family:"Tahoma","sans-serif"'>From:</span></b><span
style='font-size:10.0pt;font-family:"Tahoma","sans-serif"'> <a
href="mailto:equest-users-bounces@lists.onebuilding.org">equest-users-bounces@lists.onebuilding.org</a>
[<a href="mailto:equest-users-bounces@lists.onebuilding.org">mailto:equest-users-bounces@lists.onebuilding.org</a>]
<b>On Behalf Of </b>Steven Savich<br>
<b>Sent:</b> Tuesday, October 14, 2008 10:52 AM<br>
<b>To:</b> <a href="mailto:equest-users@lists.onebuilding.org">equest-users@lists.onebuilding.org</a><br>
<b>Subject:</b> [Equest-users] Steam loop pumping energy</span><o:p></o:p></p>
</div>
</div>
<p class=MsoNormal> <o:p></o:p></p>
<p class=MsoNormal><span style='font-size:10.0pt;font-family:"Arial","sans-serif"'>All,</span><o:p></o:p></p>
<p class=MsoNormal><span style='font-size:10.0pt;font-family:"Arial","sans-serif"'> </span><o:p></o:p></p>
<p class=MsoNormal><span style='font-size:10.0pt;font-family:"Arial","sans-serif"'>I’m
modeling a university campus building with heat provided by central plant steam
boilers, providing 15# steam. I’ve done this by eliminating boilers
in the model and attaching a steam meter to the hot water loop.</span><o:p></o:p></p>
<p class=MsoNormal><span style='font-size:10.0pt;font-family:"Arial","sans-serif"'> </span><o:p></o:p></p>
<p class=MsoNormal><span style='font-size:10.0pt;font-family:"Arial","sans-serif"'>My
problem is with pumping energy. Equest requires that a pump be attached
to the hot water loop, but the actual installation has gravity return
condensate. How do I zero out the pumping energy? I have set pump
head = 0, but this gives me pages of error reports. Any other methods?</span><o:p></o:p></p>
<p class=MsoNormal><span style='font-size:10.0pt;font-family:"Arial","sans-serif"'> </span><o:p></o:p></p>
<p class=MsoNormal><span style='font-size:10.0pt;font-family:"Arial","sans-serif"'>Thanks,</span><o:p></o:p></p>
<p class=MsoNormal><span style='font-size:10.0pt;font-family:"Arial","sans-serif"'>Steven</span><o:p></o:p></p>
<p class=MsoNormal><span style='font-size:10.0pt;font-family:"Arial","sans-serif"'> </span><o:p></o:p></p>
<p class=MsoNormal><span style='font-family:"Bookman Old Style","serif"'>Steven
Savich</span><o:p></o:p></p>
<p class=MsoNormal><span style='font-size:10.0pt;font-family:"Bookman Old Style","serif"'>Systems
West Engineers</span><o:p></o:p></p>
<p class=MsoNormal><span style='font-size:10.0pt;font-family:"Bookman Old Style","serif"'>411
High Street</span><o:p></o:p></p>
<p class=MsoNormal><span style='font-size:10.0pt;font-family:"Bookman Old Style","serif"'>Eugene,
OR 97401-2427</span><o:p></o:p></p>
<p class=MsoNormal><span style='font-size:10.0pt;font-family:"Bookman Old Style","serif"'>(541)
342-7210</span><o:p></o:p></p>
<p class=MsoNormal><span style='font-size:10.0pt;font-family:"Bookman Old Style","serif"'>(541)
342-7220 (fax)</span><o:p></o:p></p>
<p class=MsoNormal> <o:p></o:p></p>
</div>
<pre><o:p> </o:p></pre><pre style='text-align:center'>
<hr size=4 width="90%" align=center>
</pre><pre><o:p> </o:p></pre><pre>_______________________________________________<o:p></o:p></pre><pre>Equest-users mailing list<o:p></o:p></pre><pre><a
href="http://lists.onebuilding.org/listinfo.cgi/equest-users-onebuilding.org">http://lists.onebuilding.org/listinfo.cgi/equest-users-onebuilding.org</a><o:p></o:p></pre><pre>To unsubscribe from this mailing list send a blank message to <a
href="mailto:EQUEST-USERS-UNSUBSCRIBE@ONEBUILDING.ORG">EQUEST-USERS-UNSUBSCRIBE@ONEBUILDING.ORG</a><o:p></o:p></pre><pre> <o:p></o:p></pre>
<p class=MsoNormal><o:p> </o:p></p>
<div>
<p class=MsoNormal>-- <br>
<br>
<o:p></o:p></p>
<pre><b><span lang=CA style='font-size:12.0pt;font-family:"Arial","sans-serif"'> </span></b><o:p></o:p></pre><pre><b><span
lang=CA style='font-size:12.0pt;font-family:"Arial","sans-serif"'>Xavier García Casals</span></b><o:p></o:p></pre><pre><span
lang=CA style='font-family:"Arial","sans-serif"'> </span><o:p></o:p></pre><pre><b><span
lang=CA style='font-family:"Arial","sans-serif"'>Sistemas Solares, Eficiencia Energética e Ingeniería Bioclimática </span></b><o:p></o:p></pre><pre><b><span
lang=CA style='font-family:"Arial","sans-serif"'>AIGUASOL INGENIERÍA</span></b><o:p></o:p></pre><pre><b><span
style='font-family:"Arial","sans-serif"'> </span></b><o:p></o:p></pre><pre><span
lang=CA style='font-size:8.0pt;font-family:"Arial","sans-serif";color:#009900'>Sistemes Avançats d’Energia Solar Tèrmica SCCL</span><o:p></o:p></pre><pre><span
lang=CA style='font-size:8.0pt;font-family:"Arial","sans-serif";color:#009900'>C/ Palermo, 17. Bajos dcha. 28043 Madrid</span><o:p></o:p></pre><pre><span
lang=CA style='font-size:8.0pt;font-family:"Arial","sans-serif";color:#009900'>Tel: (+34) 91 142 27 88</span><o:p></o:p></pre><pre><span
lang=CA style='font-size:8.0pt;font-family:"Arial","sans-serif";color:#009900'> </span><o:p></o:p></pre><pre><span
lang=CA style='font-size:8.0pt;font-family:"Arial","sans-serif";color:#009900'>C/ Roger de Llúria, 29 3r 2a 08009 Barcelona</span><o:p></o:p></pre><pre><span
lang=CA style='font-size:8.0pt;font-family:"Arial","sans-serif";color:#009900'>Tel: (+34) 93 342 47 55 Fax: (+34) 93 342 47 56</span><o:p></o:p></pre><pre><span
lang=CA style='font-size:8.0pt;font-family:"Arial","sans-serif";color:#009900'> </span><o:p></o:p></pre><pre><span
lang=CA style='font-size:8.0pt;font-family:"Arial","sans-serif";color:#009900'>Mobil: 660 22 94 45</span><o:p></o:p></pre><pre><span
lang=CA style='font-size:8.0pt;font-family:"Arial","sans-serif";color:blue'><a
href="mailto:xavier.garcia@aiguasol.coop">xavier.garcia@aiguasol.coop</a></span><o:p></o:p></pre><pre><span
lang=CA style='font-size:8.0pt;font-family:"Arial","sans-serif";color:blue'><a
href="http://www.aiguasol.coop/">http://www.aiguasol.coop</a></span><o:p></o:p></pre><pre><b><span
lang=CA style='font-size:12.0pt;font-family:"Arial","sans-serif"'> </span></b><o:p></o:p></pre>
<p class=MsoNormal><span lang=CA> </span><o:p></o:p></p>
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