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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'>Robby,<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 PTHP system not only has a fan that recirculates
inside air across the inside coil (evaporator coil when cooling, condenser coil
when heating), but it also has a fan to blow outside air across the outside
coil (condenser when cooling, evaporator when heating). The fan coil has only
the inside fan. Perhaps the program is accounting for the energy for the
outside coil fan, which might explain the 15% additional fan energy.<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>
<div>
<p class=MsoNormal><font size=2 color=navy face=Arial><span style='font-size:
10.0pt;font-family:Arial;color:navy'>_____________________</span></font><font
color=navy><span style='color:navy'><o:p></o:p></span></font></p>
<p class=MsoNormal><font size=2 face=Arial><span style='font-size:10.0pt;
font-family:Arial'><ns0:PersonName w:insAuthor="Keith Swartz"
w:insDate="2009-01-23T14:11:00Z" w:endInsAuthor="Keith Swartz"
w:endInsDate="2009-01-23T14:11:00Z"><font color=navy><span style='color:navy'>Keith
Swartz</span></font></ns0:PersonName><font color=navy><span style='color:navy'>,
P.E., LEED AP<br>
Energy Engineer / Senior Project Manager<br>
</span></font><ns0:PlaceName w:insAuthor="Keith Swartz"
w:insDate="2009-01-23T14:11:00Z" w:endInsAuthor="Keith Swartz"
w:endInsDate="2009-01-23T14:11:00Z"><st1:PlaceName w:st="on"><font color=navy><span
style='color:navy'>Energy</span></font></st1:PlaceName></ns0:PlaceName><font
color=navy><span style='color:navy'> </span></font><ns0:PlaceType
w:insAuthor="Keith Swartz" w:insDate="2009-01-23T14:11:00Z"
w:endInsAuthor="Keith Swartz" w:endInsDate="2009-01-23T14:11:00Z"><st1:PlaceType
w:st="on"><font color=navy><span style='color:navy'>Center</span></font></st1:PlaceType></ns0:PlaceType><font
color=navy><span style='color:navy'> of </span></font><ns0:place
w:insAuthor="Keith Swartz" w:insDate="2009-01-23T14:11:00Z"
w:endInsAuthor="Keith Swartz" w:endInsDate="2009-01-23T14:11:00Z"><ns0:State
w:insAuthor="Keith Swartz" w:insDate="2009-01-23T14:11:00Z"
w:endInsAuthor="Keith Swartz" w:endInsDate="2009-01-23T14:11:00Z"><st1:State
w:st="on"><st1:place w:st="on"><font color=navy><span style='color:navy'>Wisconsin</span></font></st1:place></st1:State><br>
</ns0:State></ns0:place><ns0:Street w:insAuthor="Keith Swartz"
w:insDate="2009-01-23T14:11:00Z" w:endInsAuthor="Keith Swartz"
w:endInsDate="2009-01-23T14:11:00Z"><ns0:address w:insAuthor="Keith Swartz"
w:insDate="2009-01-23T14:11:00Z" w:endInsAuthor="Keith Swartz"
w:endInsDate="2009-01-23T14:11:00Z"><st1:Street w:st="on"><st1:address w:st="on"><font
color=navy><span style='color:navy'>455 Science Drive, Suite 200</span></font></st1:address></st1:Street><br>
</ns0:address></ns0:Street><ns0:place w:insAuthor="Keith Swartz"
w:insDate="2009-01-23T14:11:00Z" w:endInsAuthor="Keith Swartz"
w:endInsDate="2009-01-23T14:11:00Z"><ns0:City w:insAuthor="Keith Swartz"
w:insDate="2009-01-23T14:11:00Z" w:endInsAuthor="Keith Swartz"
w:endInsDate="2009-01-23T14:11:00Z"><st1:place w:st="on"><st1:City w:st="on"><font
color=navy><span style='color:navy'>Madison</span></font></st1:City></ns0:City></st1:place><font
color=navy><span style='color:navy'>, </span></font><ns0:State
w:insAuthor="Keith Swartz" w:insDate="2009-01-23T14:11:00Z"
w:endInsAuthor="Keith Swartz" w:endInsDate="2009-01-23T14:11:00Z"><st1:State
w:st="on"><font color=navy><span style='color:navy'>WI</span></font></st1:State></ns0:State><font
color=navy><span style='color:navy'> </span></font><ns0:PostalCode
w:insAuthor="Keith Swartz" w:insDate="2009-01-23T14:11:00Z"
w:endInsAuthor="Keith Swartz" w:endInsDate="2009-01-23T14:11:00Z"><st1:PostalCode
w:st="on"><font color=navy><span style='color:navy'>53711</span></font></st1:PostalCode><br>
</ns0:PostalCode></ns0:place><font color=navy><span style='color:navy'>Phone:
608.238.8276 x123<br>
Fax: 608.238.0523<br>
Email: <a href="mailto:kswartz@ecw.org">kswartz@ecw.org</a><br>
Web: <a href="http://www.ecw.org" title="http://www.ecw.org/">www.ecw.org</a><br>
<br>
</span></font><b><span style='font-weight:bold'><ns0:place
w:insAuthor="Keith Swartz" w:insDate="2009-01-23T14:11:00Z"
w:endInsAuthor="Keith Swartz" w:endInsDate="2009-01-23T14:11:00Z"><ns0:PlaceName
w:insAuthor="Keith Swartz" w:insDate="2009-01-23T14:11:00Z"
w:endInsAuthor="Keith Swartz" w:endInsDate="2009-01-23T14:11:00Z"><font
color=navy><span style='color:navy'>Energy</span></font></ns0:PlaceName><font
color=navy><span style='color:navy'> </span></font><ns0:PlaceType
w:insAuthor="Keith Swartz" w:insDate="2009-01-23T14:11:00Z"
w:endInsAuthor="Keith Swartz" w:endInsDate="2009-01-23T14:11:00Z"><font
color=navy><span style='color:navy'>Center</span></font></ns0:PlaceType><font
color=navy><span style='color:navy'> </span></font><ns0:PlaceType
w:insAuthor="Keith Swartz" w:insDate="2009-01-23T14:11:00Z"
w:endInsAuthor="Keith Swartz" w:endInsDate="2009-01-23T14:11:00Z"><font
color=navy><span style='color:navy'>University<br>
</span></font></ns0:PlaceType></ns0:place></span></b><i><font color=navy><span
style='color:navy;font-style:italic'>Your gateway to sustainable design
training and online education programs.<br>
</span></font></i></span></font><font color=navy><span style='color:navy'><a
href="http://www.ecw.org/university/" title="http://www.ecw.org/university/"><font
size=2 face=Arial><span style='font-size:10.0pt;font-family:Arial'><span
title="http://www.ecw.org/university/">www.ecw.org/university/</span></span></font></a></span></font><o:p></o:p></p>
</div>
</div>
<div>
<div class=MsoNormal align=center style='text-align:center'><font size=3
face="Times New Roman"><span style='font-size:12.0pt;font-family:"Times New Roman"'>
<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'> Robby Oylear
[mailto:robbyo@rushingco.com] <br>
<b><span style='font-weight:bold'>Sent:</span></b> Friday, January 23, 2009
12:43 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] Fan Coil
Fan Energy</span></font><font size=3 face="Times New Roman"><span
style='font-size:12.0pt;font-family:"Times New Roman"'><o:p></o:p></span></font></p>
</div>
<p class=MsoNormal><font size=2 face=Calibri><span style='font-size:11.0pt'><o:p> </o:p></span></font></p>
<p class=MsoNormal><font size=2 face=Calibri><span style='font-size:11.0pt'>I’m
comparing two systems one is a 4-pipe fan coil system and one is a PTHP
system. All of the savings between the two runs seem to make sense except
for a large difference in fan energy between the two. I don’t have
detailed product information on the actual fan energy so I currently have the
same kW/CFM value input for both systems. The fan energy of the fan coil
system is 85% less than the PTHP system. <o:p></o:p></span></font></p>
<p class=MsoNormal><font size=2 face=Calibri><span style='font-size:11.0pt'><o:p> </o:p></span></font></p>
<p class=MsoNormal><font size=2 face=Calibri><span style='font-size:11.0pt'>I
believe the problem lies with the fan coil system, because it doesn’t
have an option available for “Fan Control”. I have the Indoor
Fan Mode set to Intermittent, which is how I believe the system would actually
operate since ventilation air is being delivered from a whole house fan. <o:p></o:p></span></font></p>
<p class=MsoNormal><font size=2 face=Calibri><span style='font-size:11.0pt'><o:p> </o:p></span></font></p>
<p class=MsoNormal><font size=2 face=Calibri><span style='font-size:11.0pt'>Can
anyone explain to me how the FC system calculates fan power? Why is there
no ability to change the fan control option?<o:p></o:p></span></font></p>
<p class=MsoNormal><font size=2 face=Calibri><span style='font-size:11.0pt'><o:p> </o:p></span></font></p>
<p class=MsoNormal><font size=2 face="Franklin Gothic Demi"><span
style='font-size:11.0pt;font-family:"Franklin Gothic Demi"'>Robby Oylear, LEED</span></font><font
size=1 face="Franklin Gothic Demi"><span style='font-size:8.0pt;font-family:
"Franklin Gothic Demi";position:relative;top:-2.0pt;mso-text-raise:2.0pt'>®</span></font><font
face="Franklin Gothic Demi"><span style='font-family:"Franklin Gothic Demi"'> AP<o:p></o:p></span></font></p>
<p class=MsoNormal><i><font size=2 face=Calibri><span style='font-size:10.0pt;
font-style:italic'>Mechanical Engineer</span></font></i><i><font size=2
face="Times New Roman"><span style='font-size:10.0pt;font-family:"Times New Roman";
font-style:italic'><o:p></o:p></span></font></i></p>
<p class=MsoNormal><font size=2 face=Calibri><span style='font-size:10.0pt'>direct:
206.788.4571<o:p></o:p></span></font></p>
<p class=MsoNormal><font size=2 face=Calibri><span style='font-size:10.0pt'>cell:
206.354.2721</span></font><font size=3><span style='font-size:12.0pt'><o:p></o:p></span></font></p>
<p class=MsoNormal style='margin-bottom:3.0pt'><u><font size=1 color=blue
face=Calibri><span style='font-size:7.5pt;color:blue'>www.</span></font></u><font
size=1 face=Arial><span style='font-size:8.0pt;font-family:Arial'><a
href="http://www.rushingco.com" title="blocked::http://www.rushingco.com/"><font
size=1><span style='font-size:7.5pt'>rushingco</span></font><font size=1
face=Calibri><span style='font-size:7.5pt;font-family:Calibri'>.com</span></font></a><o:p></o:p></span></font></p>
<p class=MsoNormal><font size=1 face=Arial><span style='font-size:8.0pt;
font-family:Arial'><img border=0 width=95 height=41 id="Picture_x005f_x0020_1"
src="cid:image001.jpg@01C97D65.E32A0300" alt="Logo_B&W_1"></span></font><o:p></o:p></p>
<p class=MsoNormal><font size=2 face=Calibri><span style='font-size:11.0pt'><o:p> </o:p></span></font></p>
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