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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:
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<p class="MsoNormal"><font color="navy" face="Arial" size="2"><span
style="font-size: 10pt; font-family: Arial; color: navy;">David,<o:p></o:p></span></font></p>
<p class="MsoNormal"><font color="navy" face="Arial" size="2"><span
style="font-size: 10pt; font-family: Arial; color: navy;"><o:p> </o:p></span></font></p>
<p class="MsoNormal"><font color="navy" face="Arial" size="2"><span
style="font-size: 10pt; font-family: Arial; 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.<o:p></o:p></span></font></p>
<p class="MsoNormal"><font color="navy" face="Arial" size="2"><span
style="font-size: 10pt; font-family: Arial; color: navy;"><o:p> </o:p></span></font></p>
<p class="MsoNormal"><font color="navy" face="Arial" size="2"><span
style="font-size: 10pt; font-family: Arial; color: navy;">FYI I’m
using eQuest ver 3-61e.
Do later or earlier versions allow this 0 kW workaround?<o:p></o:p></span></font></p>
<p class="MsoNormal"><font color="navy" face="Arial" size="2"><span
style="font-size: 10pt; font-family: Arial; color: navy;"><o:p> </o:p></span></font></p>
<p class="MsoNormal"><font color="navy" face="Arial" size="2"><span
style="font-size: 10pt; font-family: Arial; color: navy;">Steven<o:p></o:p></span></font></p>
<p class="MsoNormal"><font color="navy" face="Arial" size="2"><span
style="font-size: 10pt; font-family: Arial; color: navy;"><o:p> </o:p></span></font></p>
<div>
<p class="MsoNormal"><font color="navy" face="Bookman Old Style"
size="3"><span
style="font-size: 12pt; font-family: "Bookman Old Style"; color: navy;">Steven
Savich</span></font><font color="navy"><span style="color: navy;"><o:p></o:p></span></font></p>
<p class="MsoNormal"><font color="navy" face="Bookman Old Style"
size="2"><span
style="font-size: 10pt; font-family: "Bookman Old Style"; color: navy;">Systems
West Engineers</span></font><font color="navy"><span
style="color: navy;"><o:p></o:p></span></font></p>
<p class="MsoNormal"><st1:Street w:st="on"><st1:address w:st="on"><font
color="navy" face="Bookman Old Style" size="2"><span
style="font-size: 10pt; font-family: "Bookman Old Style"; color: navy;">411
High Street</span></font></st1:address></st1:Street><font color="navy"><span
style="color: navy;"><o:p></o:p></span></font></p>
<p class="MsoNormal"><st1:place w:st="on"><st1:City w:st="on"><font
color="navy" face="Bookman Old Style" size="2"><span
style="font-size: 10pt; font-family: "Bookman Old Style"; color: navy;">Eugene</span></font></st1:City><font
color="navy" face="Bookman Old Style" size="2"><span
style="font-size: 10pt; font-family: "Bookman Old Style"; color: navy;">,
<st1:State w:st="on">OR</st1:State> <st1:PostalCode w:st="on">97401-2427</st1:PostalCode></span></font></st1:place><font
color="navy"><span style="color: navy;"><o:p></o:p></span></font></p>
<p class="MsoNormal"><font color="navy" face="Bookman Old Style"
size="2"><span
style="font-size: 10pt; font-family: "Bookman Old Style"; color: navy;">(541)
342-7210</span></font><font color="navy"><span style="color: navy;"><o:p></o:p></span></font></p>
<p class="MsoNormal"><font color="navy" face="Bookman Old Style"
size="2"><span
style="font-size: 10pt; font-family: "Bookman Old Style"; color: navy;">(541)
342-7220 (fax)</span></font><o:p></o:p></p>
</div>
<div>
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face="Times New Roman" size="3"><span style="font-size: 12pt;">
<hr tabindex="-1" align="center" size="3" width="100%"></span></font></div>
<p class="MsoNormal"><b><font face="Tahoma" size="2"><span
style="font-size: 10pt; font-family: Tahoma; font-weight: bold;">From:</span></font></b><font
face="Tahoma" size="2"><span
style="font-size: 10pt; font-family: Tahoma;"> David S Eldridge
[<a class="moz-txt-link-freetext" href="mailto:DSE@grummanbutkus.com">mailto:DSE@grummanbutkus.com</a>] <br>
<b><span style="font-weight: bold;">Sent:</span></b> Tuesday, October
14, 2008
9:09 AM<br>
<b><span style="font-weight: bold;">To:</span></b> 'Steven Savich'<br>
<b><span style="font-weight: bold;">Subject:</span></b> RE:
[Equest-users] Steam
loop pumping energy</span></font><o:p></o:p></p>
</div>
<p class="MsoNormal"><font face="Times New Roman" size="3"><span
style="font-size: 12pt;"><o:p> </o:p></span></font></p>
<p class="MsoNormal"><font color="black" face="Times New Roman"
size="3"><span style="font-size: 12pt; color: black;">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></span></font></p>
<p class="MsoNormal"><font color="black" face="Times New Roman"
size="3"><span style="font-size: 12pt; color: black;"><o:p> </o:p></span></font></p>
<div
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<div>
<div
style="border-style: solid none none; border-color: rgb(181, 196, 223) -moz-use-text-color -moz-use-text-color; border-width: 1pt medium medium; padding: 3pt 0in 0in;">
<p class="MsoNormal"><b><font face="Tahoma" size="2"><span
style="font-size: 10pt; font-family: Tahoma; font-weight: bold;">From:</span></font></b><font
face="Tahoma" size="2"><span
style="font-size: 10pt; font-family: Tahoma;">
<a class="moz-txt-link-abbreviated" href="mailto:equest-users-bounces@lists.onebuilding.org">equest-users-bounces@lists.onebuilding.org</a>
[<a class="moz-txt-link-freetext" href="mailto:equest-users-bounces@lists.onebuilding.org">mailto:equest-users-bounces@lists.onebuilding.org</a>]
<b><span style="font-weight: bold;">On Behalf Of </span></b>Steven
Savich<br>
<b><span style="font-weight: bold;">Sent:</span></b> Tuesday, October
14, 2008
10:52 AM<br>
<b><span style="font-weight: bold;">To:</span></b>
<a class="moz-txt-link-abbreviated" href="mailto:equest-users@lists.onebuilding.org">equest-users@lists.onebuilding.org</a><br>
<b><span style="font-weight: bold;">Subject:</span></b>
[Equest-users] Steam loop
pumping energy<o:p></o:p></span></font></p>
</div>
</div>
<p class="MsoNormal"><font face="Times New Roman" size="3"><span
style="font-size: 12pt;"><o:p> </o:p></span></font></p>
<p class="MsoNormal"><font face="Arial" size="2"><span
style="font-size: 10pt; font-family: Arial;">All,<o:p></o:p></span></font></p>
<p class="MsoNormal"><font face="Arial" size="2"><span
style="font-size: 10pt; font-family: Arial;"><o:p> </o:p></span></font></p>
<p class="MsoNormal"><font face="Arial" size="2"><span
style="font-size: 10pt; font-family: Arial;">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.<o:p></o:p></span></font></p>
<p class="MsoNormal"><font face="Arial" size="2"><span
style="font-size: 10pt; font-family: Arial;"><o:p> </o:p></span></font></p>
<p class="MsoNormal"><font face="Arial" size="2"><span
style="font-size: 10pt; font-family: Arial;">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?<o:p></o:p></span></font></p>
<p class="MsoNormal"><font face="Arial" size="2"><span
style="font-size: 10pt; font-family: Arial;"><o:p> </o:p></span></font></p>
<p class="MsoNormal"><font face="Arial" size="2"><span
style="font-size: 10pt; font-family: Arial;">Thanks,<o:p></o:p></span></font></p>
<p class="MsoNormal"><font face="Arial" size="2"><span
style="font-size: 10pt; font-family: Arial;">Steven<o:p></o:p></span></font></p>
<p class="MsoNormal"><font face="Arial" size="2"><span
style="font-size: 10pt; font-family: Arial;"><o:p> </o:p></span></font></p>
<p class="MsoNormal"><font face="Bookman Old Style" size="3"><span
style="font-size: 12pt; font-family: "Bookman Old Style";">Steven
Savich</span></font><o:p></o:p></p>
<p class="MsoNormal"><font face="Bookman Old Style" size="2"><span
style="font-size: 10pt; font-family: "Bookman Old Style";">Systems
West Engineers</span></font><o:p></o:p></p>
<p class="MsoNormal"><st1:Street w:st="on"><st1:address w:st="on"><font
face="Bookman Old Style" size="2"><span
style="font-size: 10pt; font-family: "Bookman Old Style";">411 High
Street</span></font></st1:address></st1:Street><o:p></o:p></p>
<p class="MsoNormal"><st1:place w:st="on"><st1:City w:st="on"><font
face="Bookman Old Style" size="2"><span
style="font-size: 10pt; font-family: "Bookman Old Style";">Eugene</span></font></st1:City><font
face="Bookman Old Style" size="2"><span
style="font-size: 10pt; font-family: "Bookman Old Style";">, <st1:State
w:st="on">OR</st1:State> <st1:PostalCode w:st="on">97401-2427</st1:PostalCode></span></font></st1:place><o:p></o:p></p>
<p class="MsoNormal"><font face="Bookman Old Style" size="2"><span
style="font-size: 10pt; font-family: "Bookman Old Style";">(541)
342-7210</span></font><o:p></o:p></p>
<p class="MsoNormal"><font face="Bookman Old Style" size="2"><span
style="font-size: 10pt; font-family: "Bookman Old Style";">(541)
342-7220 (fax)</span></font><o:p></o:p></p>
<p class="MsoNormal"><font face="Times New Roman" size="3"><span
style="font-size: 12pt;"><o:p> </o:p></span></font></p>
</div>
</div>
<pre wrap="">
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<pre><b><span style="font-size: 12pt; font-family: Arial;" lang="CA"><o:p> </o:p></span></b></pre>
<pre><b><span style="font-size: 12pt; font-family: Arial;" lang="CA">Xavier García Casals</span></b><span
style="font-family: Arial;" lang="CA"><o:p></o:p></span></pre>
<pre><span style="font-family: Arial;" lang="CA"><o:p> </o:p></span></pre>
<pre><span class="SpellE"><b><span style="font-family: Arial;" lang="CA">Sistemas</span></b></span><b><span
style="font-family: Arial;" lang="CA"> Solares, <span class="SpellE">Eficiencia</span> <span
class="SpellE">Energética</span> e <span class="SpellE">Ingeniería</span> <span
class="SpellE">Bioclimática</span></span></b><b style=""><span
style="font-family: Arial;" lang="CA"> <o:p></o:p></span></b></pre>
<pre><span class="SpellE"><b><span style="font-family: Arial;" lang="CA">AIGUASOL</span></b></span><b><span
style="font-family: Arial;" lang="CA"> <span class="SpellE">INGENIERÍA</span><o:p></o:p></span></b></pre>
<pre><b style=""><span style="font-family: Arial;" lang="CA"> <o:p></o:p></span></b></pre>
<pre><span
style="font-size: 8pt; font-family: Arial; color: rgb(0, 153, 0);"
lang="CA">Sistemes Avançats d’Energia Solar Tèrmica <span
class="SpellE">SCCL</span><o:p></o:p></span></pre>
<pre><span
style="font-size: 8pt; font-family: Arial; color: rgb(0, 153, 0);"
lang="CA">C/ <span class="SpellE">Palermo</span>, 17. <span
class="SpellE">Bajos</span> <span class="SpellE">dcha</span>. 28043 Madrid<o:p></o:p></span></pre>
<pre><span
style="font-size: 8pt; font-family: Arial; color: rgb(0, 153, 0);"
lang="CA">Tel: (+34) 91 142 27 88<o:p></o:p></span></pre>
<pre><span
style="font-size: 8pt; font-family: Arial; color: rgb(0, 153, 0);"
lang="CA"><o:p> </o:p></span></pre>
<pre><span
style="font-size: 8pt; font-family: Arial; color: rgb(0, 153, 0);"
lang="CA">C/ Roger de <span class="SpellE">Llúria</span>,<span style=""> </span>29 3r 2a 08009 Barcelona<o:p></o:p></span></pre>
<pre><span
style="font-size: 8pt; font-family: Arial; color: rgb(0, 153, 0);"
lang="CA">Tel: (+34) 93 342 47 55<span style=""> </span>Fax: (+34) 93 342 47 56<o:p></o:p></span></pre>
<pre><span
style="font-size: 8pt; font-family: Arial; color: rgb(0, 153, 0);"
lang="CA"><o:p> </o:p></span></pre>
<pre><span class="SpellE"><span
style="font-size: 8pt; font-family: Arial; color: rgb(0, 153, 0);"
lang="CA">Mobil</span></span><span
style="font-size: 8pt; font-family: Arial; color: rgb(0, 153, 0);"
lang="CA">: 660 22 94 45<o:p></o:p></span></pre>
<pre><span style="font-size: 8pt; font-family: Arial; color: blue;"
lang="CA"><a href="mailto:xavier.garcia@aiguasol.coop">xavier.garcia@aiguasol.coop</a></span><span
class="MsoHyperlink"><o:p></o:p></span></pre>
<pre><span style="font-size: 8pt; font-family: Arial; color: blue;"
lang="CA"><a href="http://www.aiguasol.coop/">http://www.aiguasol.coop</a></span></pre>
<pre><b><span style="font-size: 12pt; font-family: Arial;" lang="CA"><o:p> </o:p></span></b></pre>
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