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<p class=MsoNormal><font size=2 face=Arial><span style='font-size:10.0pt;
font-family:Arial'>Hi all,<o:p></o:p></span></font></p>
<p class=MsoNormal><font size=2 face=Arial><span style='font-size:10.0pt;
font-family:Arial'><o:p> </o:p></span></font></p>
<p class=MsoNormal><font size=2 face=Arial><span style='font-size:10.0pt;
font-family:Arial'>I’m working on an energy model for a project that is
very interested in incorporating a mixed mode ventilation scheme. The
mixed mode would operate in an on/off red light green light method where the
mechanical cooling would shut down during hours when the outdoor air
temperature could meet the space cooling loads and the mechanical system would
run its relief fan in order to pull air into the space. It would be up to
the occupants to open the operable windows. <o:p></o:p></span></font></p>
<p class=MsoNormal><font size=2 face=Arial><span style='font-size:10.0pt;
font-family:Arial'><o:p> </o:p></span></font></p>
<p class=MsoNormal><font size=2 face=Arial><span style='font-size:10.0pt;
font-family:Arial'>I’ve been through the basic options for natural
ventilation in eQUEST and it doesn’t look like what’s available in
eQUEST is going to work for the PIU system I have in the building right now. I’m
thinking it will have to involve some sort of schedule modification to turn off
the perimeter VAV box fans during hours when the loads could be met by the
natural ventilation. I could make the schedule based on BIN calc
information for <st1:City w:st="on"><st1:place w:st="on">Seattle</st1:place></st1:City>.
This would involve a lot of fine tuning though and it would be questionable
whether I could still keep the unmet load hours under 300. To simulate
the operable windows modifications could be made to the infiltration values at
the perimeter spaces.<o:p></o:p></span></font></p>
<p class=MsoNormal><font size=2 face=Arial><span style='font-size:10.0pt;
font-family:Arial'><o:p> </o:p></span></font></p>
<p class=MsoNormal><font size=2 face=Arial><span style='font-size:10.0pt;
font-family:Arial'>If anyone has had any success with mixed mode ventilation or
has any ideas towards this it would be much appreciated.<o:p></o:p></span></font></p>
<p class=MsoNormal><font size=2 face=Arial><span style='font-size:10.0pt;
font-family:Arial'><o:p> </o:p></span></font></p>
<p class=MsoNormal><font size=3 face="Franklin Gothic Demi"><span
style='font-size:12.0pt;font-family:"Franklin Gothic Demi"'>Robby Oylear</span></font><font
size=2 face="Franklin Gothic Demi"><span style='font-size:11.0pt;font-family:
"Franklin Gothic Demi"'><o:p></o:p></span></font></p>
<p class=MsoNormal><i><font size=2 face="Times New Roman"><span
style='font-size:10.0pt;font-style:italic'>Project Engineer<o:p></o:p></span></font></i></p>
<p class=MsoNormal><font size=2 face="Times New Roman"><span style='font-size:
10.0pt'>direct: 206.788.4571<o:p></o:p></span></font></p>
<p class=MsoNormal><font size=2 face="Times New Roman"><span style='font-size:
10.0pt'>cell: 206.354.2721</span></font><o:p></o:p></p>
<p class=MsoNormal style='margin-bottom:3.0pt'><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 color=black><span
style='color:windowtext;text-decoration:none'><span
title="blocked::http://www.rushingco.com/">www.rushingco.com</span></span></font></a><o:p></o:p></span></font></p>
<p class=MsoNormal style='margin-bottom:3.0pt'><font size=1 face=Arial><span
style='font-size:8.0pt;font-family:Arial'><img border=0 width=96 height=41
id="_x0000_i1025" src="cid:image001.jpg@01C84D2A.363AFDA0"></span></font><font
size=1 face=Arial><span style='font-size:8.0pt;font-family:Arial'><o:p></o:p></span></font></p>
<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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