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<p class=MsoNormal><span style='color:#1F497D'>Daniel, <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'>Water-source heat pumps of size
greater than 135 kBtu/hr are not regulated by 90.1. <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'>Meaning there is no minimum
efficiency required for such equipment.<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>
<p class=MsoNormal><span style='color:#1F497D'>Demba NDIAYE<o:p></o:p></span></p>
<p class=MsoNormal><span style='color:#1F497D'><o:p> </o:p></span></p>
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<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"'>
equest-users-bounces@lists.onebuilding.org
[mailto:equest-users-bounces@lists.onebuilding.org] <b>On Behalf Of </b>Kelsey
VanTassel<br>
<b>Sent:</b> Friday, October 01, 2010 10:07 AM<br>
<b>To:</b> Daniel Deese; equest-users@lists.onebuilding.org<br>
<b>Subject:</b> Re: [Equest-users] Water Source Heat Pump Efficiencies<o:p></o:p></span></p>
</div>
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<p class=MsoNormal><o:p> </o:p></p>
<p class=MsoNormal><span style='color:#1F497D'>No, you are right, there is
nothing listed in the tables for water-source heat pump greater than 135,000
Btu/h. I think that’s when you go to the water-chilling packages table and
start looking at the minimum efficiencies for water-cooled chillers. That wouldn’t
cover the heating mode, though. Maybe someone else knows for sure.<o:p></o:p></span></p>
<p class=MsoNormal><span style='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:black'>Kelsey Van Tassel</span></b><b><span style='font-size:12.0pt;
font-family:"Times New Roman","serif";color:#000066'><o:p></o:p></span></b></p>
<p class=MsoNormal><span style='font-size:10.0pt;font-family:"Arial","sans-serif";
color:black'>Mechanical Engineer | <a href="mailto:kvantassel@sustaineng.com">kvantassel@sustaineng.com</a></span><span
style='font-size:12.0pt;font-family:"Times New Roman","serif";color:#000066'><o:p></o:p></span></p>
<p class=MsoNormal><span style='font-size:10.0pt;font-family:"Arial","sans-serif";
color:black'>608.836.4488 ext. 20 | Fax: 608.836.4477<o:p></o:p></span></p>
<p class=MsoNormal><span style='font-size:12.0pt;font-family:"Times New Roman","serif";
color:#000066'><o:p> </o:p></span></p>
<p class=MsoNormal><span style='font-size:10.0pt;font-family:"Arial","sans-serif";
color:black'>Sustainable Engineering Group</span><span style='font-size:12.0pt;
font-family:"Times New Roman","serif";color:#000066'><o:p></o:p></span></p>
<p class=MsoNormal><span style='font-size:10.0pt;font-family:"Arial","sans-serif";
color:black'>901 Deming Way, Suite 201<o:p></o:p></span></p>
<p class=MsoNormal><span style='font-size:10.0pt;font-family:"Arial","sans-serif";
color:black'>Madison, WI 53717<o:p></o:p></span></p>
<p class=MsoNormal><span style='font-size:10.0pt;font-family:"Arial","sans-serif";
color:black'><a href="http://www.sustaineng.com/">www.sustaineng.com</a><o:p></o:p></span></p>
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color:black'> </span><span style='font-size:12.0pt;font-family:"Times New Roman","serif";
color:#000066'><o:p></o:p></span></p>
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<p class=MsoNormal><span style='color:#1F497D'><o:p> </o:p></span></p>
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<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"'>
equest-users-bounces@lists.onebuilding.org
[mailto:equest-users-bounces@lists.onebuilding.org] <b>On Behalf Of </b>Daniel
Deese<br>
<b>Sent:</b> Friday, October 01, 2010 8:52 AM<br>
<b>To:</b> equest-users@lists.onebuilding.org<br>
<b>Subject:</b> [Equest-users] Water Source Heat Pump Efficiencies<o:p></o:p></span></p>
</div>
</div>
<p class=MsoNormal><o:p> </o:p></p>
<p class=MsoNormal><span style='font-size:12.0pt;font-family:"Garamond","serif"'>Hi
all,<o:p></o:p></span></p>
<p class=MsoNormal><span style='font-size:12.0pt;font-family:"Garamond","serif"'><o:p> </o:p></span></p>
<p class=MsoNormal><span style='font-size:12.0pt;font-family:"Garamond","serif"'>
I know they always say there’s no such thing as a stupid question, but I’ve
been looking through ASHRAE 90.1 table 6.8.1 as well as I know how, and I
cannot find the required efficiency rating for a water source heat pump with a
capacity greater than 135,000 BTU/hr. We’re trying to model Multistack
heat pump/chillers, and we’re using the 70-ton model, which correlates to about
840,000 BTU/hr. <o:p></o:p></span></p>
<p class=MsoNormal><span style='font-size:12.0pt;font-family:"Garamond","serif"'><o:p> </o:p></span></p>
<p class=MsoNormal><span style='font-size:12.0pt;font-family:"Garamond","serif"'>
Has anyone ever modeled a water source heat pump larger than 135 MBH, and if
so, which efficiency did you use? I know I’m absolutely horrible at
where’s waldo, so there’s a good chance I’ve just overlooked it. Any help
or advice is as always appreciated. Thanks.<o:p></o:p></span></p>
<p class=MsoNormal><span style='font-size:12.0pt;font-family:"Garamond","serif"'><o:p> </o:p></span></p>
<p class=MsoNormal><span style='font-size:12.0pt;font-family:"Garamond","serif"'>daniel<o:p></o:p></span></p>
<p class=MsoNormal><span style='font-size:12.0pt;font-family:"Garamond","serif"'><o:p> </o:p></span></p>
<p class=MsoNormal><b><span style='font-size:12.0pt;font-family:"Times New Roman","serif"'>Daniel
I. Deese, EI</span></b><span style='font-size:12.0pt;font-family:"Times New Roman","serif"'>| </span><b><span
style='font-size:12.0pt;font-family:"Arial","sans-serif"'><ns0:PersonName>CRB</ns0:PersonName>
Consulting Engineers</span></b><span style='font-size:12.0pt;font-family:"Times New Roman","serif"'> |
<o:p></o:p></span></p>
<p class=MsoNormal><span style='font-size:9.0pt;font-family:"Arial","sans-serif";
color:gray'>1255 Crescent Green, </span><span style='font-size:9.0pt;
font-family:"Arial","sans-serif"'><ns0:address><ns0:Street><span
style='color:gray'>Suite</span></ns0:Street><span style='color:gray'> 350</span></ns0:address><span
style='color:gray'> | </span><ns0:place><ns0:City><span style='color:gray'>Cary</span></ns0:City><span
style='color:gray'>, </span><ns0:State><span style='color:gray'>NC</span></ns0:State><span
style='color:gray'> </span><ns0:PostalCode><span style='color:gray'>27518</span></ns0:PostalCode></ns0:place><span
style='color:gray'> | <o:p></o:p></span></span></p>
<p class=MsoNormal><a name="OLE_LINK2"></a><a name="OLE_LINK1"></a><b><span
style='font-size:9.0pt;font-family:"Arial","sans-serif";color:gray'>P:</span></b><span
style='font-size:9.0pt;font-family:"Arial","sans-serif";color:gray'> 919-852-5443 |<b>
F:</b> 919-852-5454 | <b>X:</b> 4543</span><span style='font-size:
12.0pt;font-family:"Times New Roman","serif"'><o:p></o:p></span></p>
<p class=MsoNormal><span style='font-size:9.0pt;font-family:"Arial","sans-serif";
color:gray;layout-grid-mode:line'>Email: </span><a
href="mailto:daniel.deese@crbusa.com"><span style='font-size:9.0pt;font-family:
"Arial","sans-serif";color:gray'>daniel.deese@crbusa.com</span></a><span
style='font-size:9.0pt;font-family:"Arial","sans-serif";color:gray'> <o:p></o:p></span></p>
<p class=MsoNormal><span style='font-size:10.0pt;font-family:"Arial","sans-serif";
color:#5F5F5F'>________________________________________________________________________________________<o:p></o:p></span></p>
<p class=MsoNormal><span style='font-size:6.0pt;font-family:"Arial","sans-serif";
color:#5F5F5F'><o:p> </o:p></span></p>
<p class=MsoNormal><i><span style='font-size:8.0pt;font-family:"Arial","sans-serif";
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