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<p class="MsoNormal"><span style="color:#1F497D">Thanks for your answer Bruce, <o:p>
</o:p></span></p>
<p class="MsoNormal"><span style="color:#1F497D"><o:p> </o:p></span></p>
<p class="MsoListParagraph" style="text-indent:-18.0pt;mso-list:l0 level1 lfo1"><![if !supportLists]><span style="color:#1F497D"><span style="mso-list:Ignore">1.<span style="font:7.0pt "Times New Roman"">
</span></span></span><![endif]><span style="color:#1F497D">Now, I know the Performance Required for the axial fan cooling tower is calculated by dividing the water flow by the fan motor nameplate power.<o:p></o:p></span></p>
<p class="MsoListParagraph" style="text-indent:-18.0pt;mso-list:l0 level1 lfo1"><![if !supportLists]><span style="color:#1F497D"><span style="mso-list:Ignore">2.<span style="font:7.0pt "Times New Roman"">
</span></span></span><![endif]><span style="color:#1F497D">This is still confusing for me.<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">Billy,<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";color:windowtext;mso-fareast-language:ES">De:</span></b><span style="font-size:10.0pt;font-family:"Tahoma","sans-serif";color:windowtext;mso-fareast-language:ES"> Bruce
Easterbrook [mailto:bruce5@bellnet.ca] <br>
<b>Enviado el:</b> sábado, 26 de octubre de 2013 21:10<br>
<b>Para:</b> Billy Condor; equest-users@lists.onebuilding.org<br>
<b>Asunto:</b> Re: [Equest-users] Table 6.8.1 of ASHRAE 90.1-2007<o:p></o:p></span></p>
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<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal"><span style="font-size:13.5pt">Sorry about that, my reasoning was flawed, the answer was not. Happens when you have a foot in the imperial and metric camps and you don't pay attention.<br>
The performance of a cooling tower would be defined by the fluid flow, the delta T of the water, the water side pressure drop and the energy required to produce this effect. The efficiency of the fan, the air flow of the fan, any other air side inefficiencies
and the motor efficiency is quantified by the energy consumption of the motor. <br>
Bruce</span><o:p></o:p></p>
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<p class="MsoNormal">On 26/10/2013 12:18 PM, Bruce Easterbrook wrote:<o:p></o:p></p>
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<p class="MsoNormal" style="margin-bottom:12.0pt"><span style="font-size:13.5pt">I can't answer your whole question but the performance required units answer your question. L/s*kW, water flow rate divided by kW</span>.<br>
<span style="font-size:13.5pt">Bruce Easterbrook P.Eng.<br>
Abode Engineering</span><o:p></o:p></p>
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<p class="MsoNormal">On 25/10/2013 12:59 PM, Billy Condor wrote:<o:p></o:p></p>
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<p class="MsoNormal" style="line-height:12.0pt;background:white"><span style="font-size:10.0pt;font-family:"Helvetica","sans-serif";color:#3F3F3F;mso-fareast-language:ES">Hello everyone, </span><o:p></o:p></p>
<p class="MsoNormal" style="line-height:12.0pt;background:white"><span style="font-size:10.0pt;font-family:"Helvetica","sans-serif";color:#3F3F3F;mso-fareast-language:ES">I have two specific questions about mechanical equipment performance requirements (addressed
in the tables 6.8.1 of ASHRAE 90.1-2007). </span><o:p></o:p></p>
<p class="MsoNormal" style="line-height:12.0pt;background:white"><span style="font-size:10.0pt;font-family:"Helvetica","sans-serif";color:#3F3F3F;mso-fareast-language:ES"> </span><o:p></o:p></p>
<p class="MsoNormal" style="line-height:12.0pt;background:white"><span style="font-size:10.0pt;font-family:"Helvetica","sans-serif";color:#3F3F3F;mso-fareast-language:ES">1. From 6.8.1G: For axial fan cooling towers, the performance required is >= 3.23 L/s.kW.
Below this table, it says this: ''Cooling tower performance is defined as the maximum flow rating of the tower divided by the fan nameplate rated motor power''. Just to confirm, the maximum flow rating refers to the water flow rate or to the air flow rate
of the fan? </span><o:p></o:p></p>
<p class="MsoNormal" style="line-height:12.0pt;background:white"><span style="font-size:10.0pt;font-family:"Helvetica","sans-serif";color:#3F3F3F;mso-fareast-language:ES">Where can I see this value in the equest report so that LEED reviewers can verify my information
is OK?</span><o:p></o:p></p>
<p class="MsoNormal" style="line-height:12.0pt;background:white"><span style="font-size:10.0pt;font-family:"Helvetica","sans-serif";color:#3F3F3F;mso-fareast-language:ES"> </span><o:p></o:p></p>
<p class="MsoNormal" style="line-height:12.0pt;background:white"><span style="font-size:10.0pt;font-family:"Helvetica","sans-serif";color:#3F3F3F;mso-fareast-language:ES">2. I've often worked with central systems that use chillers. But for some project I see,
there are condensing units and evaporative units. My question is what table do these equipment fit better: 6.8.1A, 6.8.1B or 6.8.1D? Please see attached to look at the diagrams.</span><o:p></o:p></p>
<p class="MsoNormal" style="line-height:12.0pt;background:white"><span style="font-size:10.0pt;font-family:"Helvetica","sans-serif";color:#3F3F3F;mso-fareast-language:ES"> </span><o:p></o:p></p>
<p class="MsoNormal" style="line-height:12.0pt;background:white"><span style="font-size:10.0pt;font-family:"Helvetica","sans-serif";color:#3F3F3F;mso-fareast-language:ES">Please advice,</span><o:p></o:p></p>
<p class="MsoNormal" style="line-height:12.0pt;background:white"><span style="font-size:10.0pt;font-family:"Helvetica","sans-serif";color:#3F3F3F;mso-fareast-language:ES">Regards,</span><o:p></o:p></p>
<p class="MsoNormal" style="line-height:12.0pt;background:white"><span style="font-size:10.0pt;font-family:"Helvetica","sans-serif";color:#3F3F3F;mso-fareast-language:ES"> </span><o:p></o:p></p>
<p class="MsoNormal" style="line-height:12.0pt;background:white"><span style="font-size:10.0pt;font-family:"Helvetica","sans-serif";color:#3F3F3F;mso-fareast-language:ES">Billy
</span><o:p></o:p></p>
<p class="MsoNormal"><span style="font-size:12.0pt;font-family:"Times New Roman","serif";mso-fareast-language:ES"><br>
<br>
<br>
<o:p></o:p></span></p>
<pre>_______________________________________________<o:p></o:p></pre>
<pre>Equest-users mailing list<o:p></o:p></pre>
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<br>
<br>
<br>
<o:p></o:p></span></p>
<pre>_______________________________________________<o:p></o:p></pre>
<pre>Equest-users mailing list<o:p></o:p></pre>
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<p class="MsoNormal"><span style="font-size:12.0pt;font-family:"Times New Roman","serif";mso-fareast-language:ES"><o:p> </o:p></span></p>
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