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<div class=Section1>
<p class=MsoNormal><font size=2 color=navy face=Arial><span style='font-size:
10.0pt;font-family:Arial;color:navy'>Heinrich,<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'>The chiller pumps requirement your
reviewer is referring to is in Section G3.1.3.11 (not G3.1.11). The model you
sent currently has one primary CHW pump attached to each of your two chillers,
a separate primary CHW pump on the primary loop, one secondary CHW pump and one
condenser water pump. You labeled your primary chiller pumps “Secondary Pump
CHW 1” and “Secondary Pump CHW 2”, which is probably why the
reviewer thinks you only have one primary pump (the one on the primary CHW loop
labeled “Primary CHW Pump”). I suggest making the following
changes:<o:p></o:p></span></font></p>
<ul style='margin-top:0in' type=disc>
<li class=MsoNormal style='color:navy;mso-list:l0 level1 lfo1;tab-stops:list .5in'><font
size=2 color=navy face=Arial><span style='font-size:10.0pt;font-family:
Arial'>Delete the separate pump attached to the primary CHW loop<o:p></o:p></span></font></li>
<li class=MsoNormal style='color:navy;mso-list:l0 level1 lfo1;tab-stops:list .5in'><span
class=SpellE><font size=2 color=navy face=Arial><span style='font-size:
10.0pt;font-family:Arial'>Relabel</span></font></span><font size=2
face=Arial><span style='font-size:10.0pt;font-family:Arial'> the chiller
pumps to indicate they are primary loop pumps<o:p></o:p></span></font></li>
<li class=MsoNormal style='color:navy;mso-list:l0 level1 lfo1;tab-stops:list .5in'><font
size=2 color=navy face=Arial><span style='font-size:10.0pt;font-family:
Arial'>Add condenser water pumps for each chiller through the “Loop
Attachments” tab of the chillers; delete the other CW pump.<o:p></o:p></span></font></li>
<li class=MsoNormal style='color:navy;mso-list:l0 level1 lfo1;tab-stops:list .5in'><font
size=2 color=navy face=Arial><span style='font-size:10.0pt;font-family:
Arial'>Change both the primary loop and secondary loop sizing option to “secondary”
to allow eQUEST to size based on coil loads.<o:p></o:p></span></font></li>
<li class=MsoNormal style='color:navy;mso-list:l0 level1 lfo1;tab-stops:list .5in'><font
size=2 color=navy face=Arial><span style='font-size:10.0pt;font-family:
Arial'>Change the chiller capacity ratio for each chiller to 0.50. (Or use
0.575 if you want to oversize by 15% per G3.1.2.2 – I don’t
know if this is supposed to apply to chillers.) Each chiller will be sized
for half the total load.<o:p></o:p></span></font></li>
<li class=MsoNormal style='color:navy;mso-list:l0 level1 lfo1;tab-stops:list .5in'><font
size=2 color=navy face=Arial><span style='font-size:10.0pt;font-family:
Arial'>Allow the chiller capacity to default (remove the 0.9 <span
class=SpellE>MBtu</span>/h).<o:p></o:p></span></font></li>
<li class=MsoNormal style='color:navy;mso-list:l0 level1 lfo1;tab-stops:list .5in'><font
size=2 color=navy face=Arial><span style='font-size:10.0pt;font-family:
Arial'>Make sure you include both/all pages of the PS-C report –
your reviewer will then see that the secondary CHW pump is variable flow.
(Your zones have two-way valves already.)<o:p></o:p></span></font></li>
<li class=MsoNormal style='color:navy;mso-list:l0 level1 lfo1;tab-stops:list .5in'><font
size=2 color=navy face=Arial><span style='font-size:10.0pt;font-family:
Arial'>The PV-A report will show that the total primary CHW pump flow will
nearly match the secondary CHW pump flow.<o:p></o:p></span></font></li>
</ul>
<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'>Regards,<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'>Bill<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><st1:place w:st="on"><st1:City w:st="on"><b
style='mso-bidi-font-weight:normal'><font size=2 color=black
face="Franklin Gothic Medium Cond"><span style='font-size:10.0pt;font-family:
"Franklin Gothic Medium Cond";color:black;font-weight:bold;mso-bidi-font-weight:
normal;mso-no-proof:yes'>William</span></font></b></st1:City><b
style='mso-bidi-font-weight:normal'><font size=2 color=black
face="Franklin Gothic Medium Cond"><span style='font-size:10.0pt;font-family:
"Franklin Gothic Medium Cond";color:black;font-weight:bold;mso-bidi-font-weight:
normal;mso-no-proof:yes'> <st1:State w:st="on">Bishop</st1:State>, <st1:State
w:st="on">PE</st1:State></span></font></b></st1:place><b style='mso-bidi-font-weight:
normal'><font size=2 color=black face="Franklin Gothic Medium Cond"><span
style='font-size:10.0pt;font-family:"Franklin Gothic Medium Cond";color:black;
font-weight:bold;mso-bidi-font-weight:normal;mso-no-proof:yes'>, BEMP, LEED<sup>®</sup>
AP </span></font></b><b style='mso-bidi-font-weight:normal'><font size=2
color="#006600" face="Franklin Gothic Medium Cond"><span style='font-size:10.0pt;
font-family:"Franklin Gothic Medium Cond";color:#006600;font-weight:bold;
mso-bidi-font-weight:normal;mso-no-proof:yes'>|</span></font></b><b
style='mso-bidi-font-weight:normal'><font size=2 color=black
face="Franklin Gothic Medium Cond"><span style='font-size:10.0pt;font-family:
"Franklin Gothic Medium Cond";color:black;font-weight:bold;mso-bidi-font-weight:
normal;mso-no-proof:yes'> </span></font></b><b style='mso-bidi-font-weight:
normal'><font size=2 color=black face="Franklin Gothic Medium Cond"><span
style='font-size:10.0pt;mso-bidi-font-size:12.0pt;font-family:"Franklin Gothic Medium Cond";
color:black;font-weight:bold;mso-bidi-font-weight:normal;mso-no-proof:yes'>Pathfinder
Engineers & Architects LLP</span></font></b><b><font size=2 color=black
face="Franklin Gothic Medium Cond"><span style='font-size:10.0pt;font-family:
"Franklin Gothic Medium Cond";color:black;font-weight:bold;mso-no-proof:yes'><o:p></o:p></span></font></b></p>
<p class=MsoNormal><font size=1 color=black face=Arial><span style='font-size:
9.0pt;font-family:Arial;color:black;mso-no-proof:yes'>Mechanical Engineer<o:p></o:p></span></font></p>
<p class=MsoNormal><font size=1 color=black face=Arial><span style='font-size:
5.0pt;font-family:Arial;color:black;mso-no-proof:yes'><o:p> </o:p></span></font></p>
<p class=MsoNormal><!--[if gte vml 1]><v:shapetype id="_x0000_t75" coordsize="21600,21600"
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<v:imagedata src="cid:image001.jpg@01CBBBCD.39C4CE00" o:title="Top 100 Rochester 2010" />
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absolute;z-index:-1;margin-left:367px;margin-top:17px;width:60px;height:58px'><img
width=60 height=58 src="cid:image001.jpg@01CBBBCD.39C4CE00" v:shapes="_x0000_s1026"></span><![endif]><st1:Street
w:st="on"><font size=1 color=navy face=Arial><span style='font-size:9.0pt;
font-family:Arial;color:navy;mso-no-proof:yes'>134 South Fitzhugh Street</span></font></st1:Street><font
size=1 color=navy><span style='font-size:9.0pt;color:navy;mso-no-proof:yes'><span
style='mso-tab-count:2'> </span></span></font><st1:City
w:st="on"><font size=1 color=navy face=Arial><span style='font-size:9.0pt;
font-family:Arial;color:navy;mso-no-proof:yes'>Rochester</span></font></st1:City><font
size=1 color=navy face=Arial><span style='font-size:9.0pt;font-family:Arial;
color:navy;mso-no-proof:yes'>, <st1:State w:st="on">NY</st1:State> <st1:PostalCode
w:st="on">14608</st1:PostalCode></span></font><font size=1 color=navy><span
style='font-size:9.0pt;color:navy;mso-no-proof:yes'><br>
</span></font><font size=1 color=navy face=Arial><span style='font-size:9.0pt;
font-family:Arial;color:navy;mso-no-proof:yes'>T: (585) 325-6004 </span></font><font
size=1 color=black face=Arial><span style='font-size:9.0pt;font-family:Arial;
color:black;mso-no-proof:yes'>Ext. 114</span></font><font color=navy><span
style='color:navy;mso-no-proof:yes'><span style='mso-tab-count:1'> </span></span></font><font
size=1 color=navy face=Arial><span style='font-size:9.0pt;font-family:Arial;
color:navy;mso-no-proof:yes'>F: (585) 325-6005</span></font><font size=1
color=black face=Arial><span style='font-size:9.0pt;mso-bidi-font-size:12.0pt;
font-family:Arial;color:black;mso-no-proof:yes'><o:p></o:p></span></font></p>
<p class=MsoNormal><font size=1 color=black face=Arial><span style='font-size:
9.0pt;font-family:Arial;color:black;mso-no-proof:yes'><a
href="mailto:wbishop@pathfinder-ea.com">wbishop@pathfinder-ea.com</a><span
style='mso-tab-count:1'> </span></span></font><font
size=1 color=black face=Arial><span style='font-size:9.0pt;mso-bidi-font-size:
12.0pt;font-family:Arial;color:black;mso-no-proof:yes'><a
href="http://www.pathfinder-ea.com/">www.pathfinder-ea.com</a><o:p></o:p></span></font></p>
<p class=MsoNormal><font size=5 color=green face=Webdings><span
style='font-size:18.0pt;font-family:Webdings;mso-bidi-font-family:Webdings;
color:green;mso-no-proof:yes'>P</span></font><font color=green><span
style='color:green;mso-no-proof:yes'><span
style='mso-spacerun:yes'> </span></span></font><font size=1
color=green><span style='font-size:7.5pt;color:green;mso-no-proof:yes'>Sustainability
– the forest AND the trees.</span></font><font size=5 color=green
face=Webdings><span style='font-size:18.0pt;font-family:Webdings;mso-bidi-font-family:
Webdings;color:green;mso-no-proof:yes'> P<span style='mso-tab-count:1'> </span></span></font><font
color=green><span style='color:green'><o:p></o:p></span></font></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'>
<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'>
equest-users-bounces@lists.onebuilding.org
[mailto:equest-users-bounces@lists.onebuilding.org] <b><span style='font-weight:
bold'>On Behalf Of </span></b>Heinrich.ib-bauklima.de<br>
<b><span style='font-weight:bold'>Sent:</span></b> Monday, January 24, 2011
12:28 PM<br>
<b><span style='font-weight:bold'>To:</span></b>
equest-users@lists.onebuilding.org<br>
<b><span style='font-weight:bold'>Subject:</span></b> [Equest-users] eQUEST -
serios trouble with LEED review</span></font><o:p></o:p></p>
</div>
<p class=MsoNormal><font size=3 face="Times New Roman"><span style='font-size:
12.0pt'><o:p> </o:p></span></font></p>
<div>
<p class=MsoNormal style='mso-margin-top-alt:auto;mso-margin-bottom-alt:auto'><font
size=3 face=Arial><span style='font-size:12.0pt;font-family:Arial'>Hi Everyone,<o:p></o:p></span></font></p>
<p class=MsoNormal style='mso-margin-top-alt:auto;mso-margin-bottom-alt:auto'><font
size=3 face="Times New Roman"><span style='font-size:12.0pt'> <o:p></o:p></span></font></p>
<p class=MsoNormal style='mso-margin-top-alt:auto;mso-margin-bottom-alt:auto'><font
size=3 face=Arial><span style='font-size:12.0pt;font-family:Arial'>I got a
review comment that got me in big trouble and I can't find the solution yet.</span></font><o:p></o:p></p>
<p class=MsoNormal style='mso-margin-top-alt:auto;mso-margin-bottom-alt:auto'><font
size=3 face=Arial><span style='font-size:12.0pt;font-family:Arial'>May be there
is no solution for this in eQUEST....!</span></font><o:p></o:p></p>
<p class=MsoNormal style='mso-margin-top-alt:auto;mso-margin-bottom-alt:auto'><font
size=3 face=Arial><span style='font-size:12.0pt;font-family:Arial'>I rate this
forum as the very best address for difficulties with eQUEST and LEED EAc1 simulation.</span></font><o:p></o:p></p>
<p class=MsoNormal style='mso-margin-top-alt:auto;mso-margin-bottom-alt:auto'><font
size=3 face=Arial><span style='font-size:12.0pt;font-family:Arial'>So please
give me some guidance and feel free to testthe model attached.</span></font><o:p></o:p></p>
<p class=MsoNormal style='mso-margin-top-alt:auto;mso-margin-bottom-alt:auto'><font
size=3 face="Times New Roman"><span style='font-size:12.0pt'> <o:p></o:p></span></font></p>
<p class=MsoNormal style='mso-margin-top-alt:auto;mso-margin-bottom-alt:auto'><font
size=3 face=Arial><span style='font-size:12.0pt;font-family:Arial'>Hereare the
two comments of the reviewer.</span></font><o:p></o:p></p>
<p class=MsoNormal style='mso-margin-top-alt:auto;mso-margin-bottom-alt:auto'><em><i><font
size=3 face=Arial><span lang=DE style='font-size:12.0pt;font-family:Arial;
mso-ansi-language:DE'>"It appears as if the pumps and circulation loops
were not modeled correctly for the Baseline Case. It appears based on the PS-C
reports that there is only one primary chilled water pump and one condenser
water pump for the Baseline Case. However, ASHRAE 90.1 Section G3.1.11 requires
that each chiller be modeled with separate condenser water and chilled water
pumps interlocked to operate with each associated chiller. Please model two
primary chilled water pumps and two primary condenser water pumps in accordance
with Section G3.1.11. Also update the chilled water valves to two-way valves so
that the secondary chilled water loop operates as a variable flow loop with
pumps riding the curve. Provide updated PS-C reports confirming that the
changes have been made."</span></font></i></em><o:p></o:p></p>
<p><em><i><font size=3 face=Arial><span lang=DE style='font-size:12.0pt;
font-family:Arial;mso-ansi-language:DE'>"It is unclear why the pump flow
for the secondary chilled water loop is so much larger than that of the primary
chilled water loop when the temperature differential for both loops is expected
to be the same. It also appears based on the outputs in PS-C that the secondary
chilled water loop is operated at the same load for every hour that it is on
even though it is a variable speed pump. Please update the secondary chilled
water loop flow to be consistent with the primary chilled water loop flow, and
confirm that the secondary chilled water loop is operating as a variable flow
loop."</span></font></i></em><span lang=DE style='mso-ansi-language:DE'><o:p></o:p></span></p>
<p class=MsoNormal style='mso-margin-top-alt:auto;mso-margin-bottom-alt:auto'><font
size=3 face="Times New Roman"><span style='font-size:12.0pt'> <o:p></o:p></span></font></p>
<p class=MsoNormal style='mso-margin-top-alt:auto;mso-margin-bottom-alt:auto'><font
size=3 face=Arial><span style='font-size:12.0pt;font-family:Arial'>I have to
say:</span></font><o:p></o:p></p>
<p class=MsoNormal style='mso-margin-top-alt:auto;mso-margin-bottom-alt:auto'><font
size=3 face=Arial><span style='font-size:12.0pt;font-family:Arial'>I didn't see
any equest-model modeled with separate condenser water and chilled water pumps
interlocked to operate with each associated chiller. </span></font><o:p></o:p></p>
<p class=MsoNormal style='mso-margin-top-alt:auto;mso-margin-bottom-alt:auto'><font
size=3 face=Arial><span style='font-size:12.0pt;font-family:Arial'>I manually
resized the boilers and chillers with reference to SS-D report, because auto
sizing of eQUEST generated capacities that were double the size of SS-D report.
Resizing of the volume flow of secondary loop of chillers according to primary
loop of chillers generated warningmessages but changed nothing.</span></font><o:p></o:p></p>
<p class=MsoNormal style='mso-margin-top-alt:auto;mso-margin-bottom-alt:auto'><font
size=3 face="Times New Roman"><span style='font-size:12.0pt'> <o:p></o:p></span></font></p>
<p class=MsoNormal style='mso-margin-top-alt:auto;mso-margin-bottom-alt:auto'><font
size=3 face=Arial><span style='font-size:12.0pt;font-family:Arial'>Heinrich</span></font><o:p></o:p></p>
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<p class=MsoNormal><font size=3 face="Times New Roman"><span style='font-size:
12.0pt'> <o:p></o:p></span></font></p>
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