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<p class=MsoNormal><span style='font-size:12.0pt'>James,<o:p></o:p></span></p>

<p class=MsoNormal><span style='font-size:12.0pt'><o:p> </o:p></span></p>

<p class=MsoNormal><span style='font-size:12.0pt'>I don’t think I agree
with you that all swimming pool related energy is a process load according to
90.1. The definition in 90.1 is as follows:<o:p></o:p></span></p>

<p class=MsoNormal><span style='font-size:12.0pt'><o:p> </o:p></span></p>

<p class=MsoNormal><b><span style='font-size:12.0pt'>process energy</span></b><span
style='font-size:12.0pt'>: energy consumed in support of a manufacturing,
industrial, or commercial process other than conditioning spaces and
maintaining comfort and amenities for the occupants of a building</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:12.0pt;font-family:"Times New Roman","serif"'><o:p> </o:p></span></p>

<p class=MsoNormal><span style='font-size:12.0pt;font-family:"Times New Roman","serif"'>Clearly
controlling space and pool water temperature in a natatorium maintains comfort
for the occupants of a building. Additionally, 90.1 specifically includes many
swimming pool related requirements including;<o:p></o:p></span></p>

<p class=MsoNormal><span style='font-size:12.0pt;font-family:"Times New Roman","serif"'><o:p> </o:p></span></p>

<p class=MsoListParagraph style='text-indent:-.25in;mso-list:l0 level1 lfo1'><![if !supportLists]><span
style='font-size:12.0pt;line-height:115%;font-family:Symbol'><span
style='mso-list:Ignore'>·<span style='font:7.0pt "Times New Roman"'>        
</span></span></span><![endif]><span style='font-size:12.0pt;line-height:115%;
font-family:"Times New Roman","serif"'>Section 7.4.5.1 – pool heaters<o:p></o:p></span></p>

<p class=MsoListParagraph style='text-indent:-.25in;mso-list:l0 level1 lfo1'><![if !supportLists]><span
style='font-size:12.0pt;line-height:115%;font-family:Symbol'><span
style='mso-list:Ignore'>·<span style='font:7.0pt "Times New Roman"'>        
</span></span></span><![endif]><span style='font-size:12.0pt;line-height:115%;
font-family:"Times New Roman","serif"'>Section 7.4.5.2 – pool covers<o:p></o:p></span></p>

<p class=MsoListParagraph style='text-indent:-.25in;mso-list:l0 level1 lfo1'><![if !supportLists]><span
style='font-size:12.0pt;line-height:115%;font-family:Symbol'><span
style='mso-list:Ignore'>·<span style='font:7.0pt "Times New Roman"'>        
</span></span></span><![endif]><span style='font-size:12.0pt;line-height:115%;
font-family:"Times New Roman","serif"'>Section 7.4.5.3 – time switches<o:p></o:p></span></p>

<p class=MsoListParagraph style='text-indent:-.25in;mso-list:l0 level1 lfo1'><![if !supportLists]><span
style='font-size:12.0pt;line-height:115%;font-family:Symbol'><span
style='mso-list:Ignore'>·<span style='font:7.0pt "Times New Roman"'>        
</span></span></span><![endif]><span style='font-size:12.0pt;line-height:115%;
font-family:"Times New Roman","serif"'>Table 7.8 – pool heater efficiency
requirements<o:p></o:p></span></p>

<p class=MsoListParagraph style='text-indent:-.25in;mso-list:l0 level1 lfo1'><![if !supportLists]><span
style='font-size:12.0pt;line-height:115%;font-family:Symbol'><span
style='mso-list:Ignore'>·<span style='font:7.0pt "Times New Roman"'>        
</span></span></span><![endif]><span style='font-size:12.0pt;line-height:115%;
font-family:"Times New Roman","serif"'>Section 6.5.6.1 - Exhaust Air Energy
Recovery (does not specifically mention swimming pools, but should apply).<o:p></o:p></span></p>

<p class=MsoNormal><span style='font-size:12.0pt;font-family:"Times New Roman","serif"'>Mike<o:p></o:p></span></p>

<p class=MsoNormal><span style='font-size:10.0pt;font-family:"Arial","sans-serif"'><o:p> </o:p></span></p>

<p class=MsoNormal><span style='font-size:10.0pt;font-family:"Arial","sans-serif"'><o:p> </o:p></span></p>

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<p class=MsoNormal style='mso-margin-top-alt:auto;mso-margin-bottom-alt:auto'><b><span
style='font-size:12.0pt;font-family:"Verdana","sans-serif";color:#D47500'>__________________________</span></b><span
style='font-size:12.0pt;font-family:"Times New Roman","serif"'> <o:p></o:p></span></p>

<p class=MsoNormal style='mso-margin-top-alt:auto;mso-margin-bottom-alt:auto'><b><span
style='font-size:12.0pt;font-family:"Verdana","sans-serif"'>Michael Rosenberg</span></b><span
style='font-size:12.0pt;font-family:"Times New Roman","serif"'> <br>
</span><span style='font-size:10.0pt;font-family:"Verdana","sans-serif"'>Senior
Commercial Buildings Energy Analyst</span><span style='font-size:12.0pt;
font-family:"Times New Roman","serif"'> <br>
</span><span style='font-size:10.0pt;font-family:"Verdana","sans-serif"'>ENERGY
& ENVIRONMENT DIRECTORATE </span><span style='font-size:12.0pt;font-family:
"Times New Roman","serif"'><o:p></o:p></span></p>

</div>

<p class=MsoNormal><span style='font-size:10.0pt;font-family:"Verdana","sans-serif"'>Pacific
Northwest National Laboratory </span><span style='font-size:12.0pt;font-family:
"Times New Roman","serif"'><br>
</span><span style='font-size:10.0pt;font-family:"Verdana","sans-serif"'>2032
Todd Street </span><span style='font-size:12.0pt;font-family:"Times New Roman","serif"'><br>
</span><span style='font-size:10.0pt;font-family:"Verdana","sans-serif"'>Eugene,
OR 97405 </span><span style='font-size:12.0pt;font-family:"Times New Roman","serif"'><br>
</span><span style='font-size:10.0pt;font-family:"Verdana","sans-serif"'>(541)
844-1960 </span><span style='font-size:12.0pt;font-family:"Times New Roman","serif"'><br>
</span><span style='font-size:10.0pt;font-family:"Verdana","sans-serif"'>michael.rosenberg@pnl.gov
</span><span style='font-size:12.0pt;font-family:"Times New Roman","serif"'><br>
</span><span style='font-size:10.0pt;font-family:"Verdana","sans-serif";
color:#D47500'>www.pnl.gov</span><span style='font-size:12.0pt;font-family:
"Times New Roman","serif"'> </span><span style='font-size:10.0pt;font-family:
"Arial","sans-serif"'><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"'>
bldg-sim-bounces@lists.onebuilding.org
[mailto:bldg-sim-bounces@lists.onebuilding.org] <b>On Behalf Of </b>James V
Dirkes II, PE<br>
<b>Sent:</b> Friday, June 25, 2010 11:16 AM<br>
<b>To:</b> bldg-sim@lists.onebuilding.org<br>
<b>Subject:</b> [Bldg-sim] LEED, Process energy and pools<o:p></o:p></span></p>

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<p class=MsoNormal><o:p> </o:p></p>

<p class=MsoNormal>Dear Bldg-Sim community,<o:p></o:p></p>

<p class=MsoNormal><o:p> </o:p></p>

<p class=MsoNormal>I’ve just completed a lovely, accurate, comprehensive
building energy model (in Energy Plus) which contains an indoor swimming
pool.  The building is about 100,000 square feet and the pool area is
about 10% of that total.<o:p></o:p></p>

<p class=MsoNormal><o:p> </o:p></p>

<p class=MsoNormal>At the end of the year, the heating, cooling, fans and pumps
associated with the pool have consumed 70% of the total building energy! 
I was rather surprised.  I expected it to be a large percentage, but not
THAT large!  This, by the way, is the result when using a specialty pool
HVAC unit which recovers and re-uses most of the DX cooling energy and thus
greatly reduces the pool energy total.<o:p></o:p></p>

<p class=MsoNormal><o:p> </o:p></p>

<p class=MsoNormal>As far as I can tell, ALL of the pool-related energy is
considered by ASHRAE 90.1 and LEED to be “process” energy. 
Since “process” energy must be identical in both the baseline and
proposed models, the rest of the building must accomplish the entire savings
… which is pretty darn difficult (impossible, really) if
“process” is too large a percentage.<o:p></o:p></p>

<p class=MsoNormal><o:p> </o:p></p>

<p class=MsoNormal>Have any of you successfully modeled a building with a pool
and also received LEED certification?  If so, can you suggest what I might
be missing?<o:p></o:p></p>

<p class=MsoNormal><o:p> </o:p></p>

<p class=MsoNormal>Thanks in advance.<o:p></o:p></p>

<p class=MsoNormal><o:p> </o:p></p>

<p class=MsoNormal><img width=336 height=192 id="Picture_x0020_1"
src="cid:image001.jpg@01CB1466.1DCBDB30" alt="BPT BizCard_RGB_0507"><o:p></o:p></p>

<p class=MsoNormal><span style='font-size:10.0pt'><o:p> </o:p></span></p>

<p class=MsoNormal><span style='font-size:10.0pt;font-family:"Arial","sans-serif"'>Quid
est hoc ad aeternitatem?<o:p></o:p></span></p>

<p class=MsoNormal><o:p> </o:p></p>

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