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<p class=MsoNormal><font size=2 color=navy face=Arial><span style='font-size:
10.0pt;font-family:Arial;color:navy'>Nick,<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'>I know this has been discussed in the
forums but I can’t find a good post for you. My understanding is that eQUEST
does not model heat recovery from the zones supplied by an OA-FROM-SYSTEM. The
workaround that I use is to specify heat recovery for each system that receives
ventilation from a DOAS. I calculate the kW/<span class=SpellE>cfm</span> of
the DOAS fan(s), select “Self Contained” for the ERV fans and copy
the kW/<span class=SpellE>cfm</span> into the makeup and exhaust fan fields.
(You have to enter it in the “kW” field first to allow you to enter
values in the kW/<span class=SpellE>cfm</span> field, or else use the “User-Defined
Default” option.) If the DOAS has a heating coil, I add preheat coils to
all the systems. One of the problems with this work-around is that the system
fans have to be operating for any hour that you wish to provide ventilation.<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'>Regards,<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'>Bill<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>
<p class=MsoNormal><st1:place w:st="on"><st1:City w:st="on"><b
style='mso-bidi-font-weight:normal'><font size=2 color=black
face="Franklin Gothic Medium Cond"><span style='font-size:10.0pt;font-family:
"Franklin Gothic Medium Cond";color:black;font-weight:bold;mso-bidi-font-weight:
normal;mso-no-proof:yes'>William</span></font></b></st1:City><b
style='mso-bidi-font-weight:normal'><font size=2 color=black
face="Franklin Gothic Medium Cond"><span style='font-size:10.0pt;font-family:
"Franklin Gothic Medium Cond";color:black;font-weight:bold;mso-bidi-font-weight:
normal;mso-no-proof:yes'> <st1:State w:st="on">Bishop</st1:State>, <st1:State
w:st="on">PE</st1:State></span></font></b></st1:place><b style='mso-bidi-font-weight:
normal'><font size=2 color=black face="Franklin Gothic Medium Cond"><span
style='font-size:10.0pt;font-family:"Franklin Gothic Medium Cond";color:black;
font-weight:bold;mso-bidi-font-weight:normal;mso-no-proof:yes'>, BEMP, LEED<sup>®</sup>
AP </span></font></b><b style='mso-bidi-font-weight:normal'><font size=2
color="#006600" face="Franklin Gothic Medium Cond"><span style='font-size:10.0pt;
font-family:"Franklin Gothic Medium Cond";color:#006600;font-weight:bold;
mso-bidi-font-weight:normal;mso-no-proof:yes'>|</span></font></b><b
style='mso-bidi-font-weight:normal'><font size=2 color=black
face="Franklin Gothic Medium Cond"><span style='font-size:10.0pt;font-family:
"Franklin Gothic Medium Cond";color:black;font-weight:bold;mso-bidi-font-weight:
normal;mso-no-proof:yes'> </span></font></b><b style='mso-bidi-font-weight:
normal'><font size=2 color=black face="Franklin Gothic Medium Cond"><span
style='font-size:10.0pt;mso-bidi-font-size:12.0pt;font-family:"Franklin Gothic Medium Cond";
color:black;font-weight:bold;mso-bidi-font-weight:normal;mso-no-proof:yes'>Pathfinder
Engineers & Architects LLP</span></font></b><b><font size=2 color=black
face="Franklin Gothic Medium Cond"><span style='font-size:10.0pt;font-family:
"Franklin Gothic Medium Cond";color:black;font-weight:bold;mso-no-proof:yes'><o:p></o:p></span></font></b></p>
<p class=MsoNormal><font size=1 color=black face=Arial><span style='font-size:
9.0pt;font-family:Arial;color:black;mso-no-proof:yes'>Mechanical Engineer<o:p></o:p></span></font></p>
<p class=MsoNormal><font size=1 color=black face=Arial><span style='font-size:
5.0pt;font-family:Arial;color:black;mso-no-proof:yes'><o:p> </o:p></span></font></p>
<p class=MsoNormal><st1:address
style="BACKGROUND-IMAGE: url(res://ietag.dll/#34/#1001); BACKGROUND-REPEAT: repeat-x; BACKGROUND-POSITION: left bottom"
tabIndex="0" w:st="on"><st1:Street w:st="on"><font size=1 color=navy
face=Arial><span style='font-size:9.0pt;font-family:Arial;color:navy;
mso-no-proof:yes'>134 South Fitzhugh Street</span></font></st1:Street><font
size=1 color=navy><span style='font-size:9.0pt;color:navy;mso-no-proof:yes'><br>
</span></font><st1:City w:st="on"><font size=1 color=navy face=Arial><span
style='font-size:9.0pt;font-family:Arial;color:navy;mso-no-proof:yes'>Rochester</span></font></st1:City><font
size=1 color=navy face=Arial><span style='font-size:9.0pt;font-family:Arial;
color:navy;mso-no-proof:yes'>, <st1:State w:st="on">NY</st1:State> <st1:PostalCode
w:st="on">14608</st1:PostalCode></span></font></st1:address><font size=1
color=navy><span style='font-size:9.0pt;color:navy;mso-no-proof:yes'><br>
</span></font><font size=1 color=navy face=Arial><span style='font-size:9.0pt;
font-family:Arial;color:navy;mso-no-proof:yes'>T: (585) 325-6004 </span></font><font
size=1 color=black face=Arial><span style='font-size:9.0pt;font-family:Arial;
color:black;mso-no-proof:yes'>Ext. 114</span></font><font size=1 color=navy><span
style='font-size:9.0pt;color:navy;mso-no-proof:yes'><br>
</span></font><font size=1 color=navy face=Arial><span style='font-size:9.0pt;
font-family:Arial;color:navy;mso-no-proof:yes'>F: (585) 325-6005</span></font><font
size=1 color=black face=Arial><span style='font-size:9.0pt;mso-bidi-font-size:
12.0pt;font-family:Arial;color:black;mso-no-proof:yes'><o:p></o:p></span></font></p>
<p class=MsoNormal><font size=1 color=black face=Arial><span style='font-size:
9.0pt;font-family:Arial;color:black;mso-no-proof:yes'>wbishop@pathfinder-ea.com<o:p></o:p></span></font></p>
<p class=MsoNormal><font size=1 color=black face=Arial><span style='font-size:
9.0pt;mso-bidi-font-size:12.0pt;font-family:Arial;color:black;mso-no-proof:
yes'>www.pathfinder-ea.com</span></font><font color=navy><span
style='color:navy;mso-no-proof:yes'><o:p></o:p></span></font></p>
<p class=MsoNormal><font size=5 color=green face=Webdings><span
style='font-size:18.0pt;font-family:Webdings;mso-bidi-font-family:Webdings;
color:green;mso-no-proof:yes'>P</span></font><font color=green><span
style='color:green;mso-no-proof:yes'> </span></font><font size=1 color=green><span
style='font-size:7.5pt;color:green;mso-no-proof:yes'>Sustainability –
less is more.</span></font><font color=green><span style='color:green'><o:p></o:p></span></font></p>
</div>
<div>
<div class=MsoNormal align=center style='text-align:center'><font size=3
face="Times New Roman"><span style='font-size:12.0pt'>
<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'>
equest-users-bounces@lists.onebuilding.org
[mailto:equest-users-bounces@lists.onebuilding.org] <b><span style='font-weight:
bold'>On Behalf Of </span></b>Mohammad Almasri<br>
<b><span style='font-weight:bold'>Sent:</span></b> Monday, September 13, 2010
8:58 AM<br>
<b><span style='font-weight:bold'>To:</span></b> 'Nicholas Lander';
'equest-users'<br>
<b><span style='font-weight:bold'>Subject:</span></b> Re: [Equest-users]
Equest,heat recovery and separate outside air systems</span></font><o:p></o:p></p>
</div>
<p class=MsoNormal><font size=3 face="Times New Roman"><span style='font-size:
12.0pt'><o:p> </o:p></span></font></p>
<p class=MsoNormal><font size=3 color=blue face=Eurostile><span
style='font-size:12.0pt;font-family:Eurostile;color:blue'>Dear Nicholas,<o:p></o:p></span></font></p>
<p class=MsoNormal><font size=3 color=blue face=Eurostile><span
style='font-size:12.0pt;font-family:Eurostile;color:blue'><o:p> </o:p></span></font></p>
<p class=MsoNormal><font size=3 color=blue face=Eurostile><span
style='font-size:12.0pt;font-family:Eurostile;color:blue'>If you mean that the
consumption of the fans will increase when you add the Heat recovery wheel ;
this because of leaving the DP on the default value (1 in.wg). the default
number is very high .<o:p></o:p></span></font></p>
<p class=MsoNormal><font size=3 color=blue face=Eurostile><span
style='font-size:12.0pt;font-family:Eurostile;color:blue'>You should either use
the actual value or you can set this value as zero if you included the heat
wheel effect on the fan KW/cfm .<o:p></o:p></span></font></p>
<p class=MsoNormal><font size=3 color=blue face=Eurostile><span
style='font-size:12.0pt;font-family:Eurostile;color:blue'><o:p> </o:p></span></font></p>
<p class=MsoNormal><font size=3 color=blue face=Eurostile><span
style='font-size:12.0pt;font-family:Eurostile;color:blue'>The eQUEST users
archive have a good information about this issue , also the eQUEST help can
provide a good support. <o:p></o:p></span></font></p>
<p class=MsoNormal><font size=3 color=blue face=Eurostile><span
style='font-size:12.0pt;font-family:Eurostile;color:blue'><o:p> </o:p></span></font></p>
<p class=MsoNormal><font size=3 color=blue face=Eurostile><span
style='font-size:12.0pt;font-family:Eurostile;color:blue'><img width=485
height=362 id="Picture_x005f_x0020_2" src="cid:image001.jpg@01CB5405.B6FC5170"><o:p></o:p></span></font></p>
<p class=MsoNormal><font size=3 color=blue face=Eurostile><span
style='font-size:12.0pt;font-family:Eurostile;color:blue'><o:p> </o:p></span></font></p>
<p class=MsoNormal><font size=3 color=blue face=Eurostile><span
style='font-size:12.0pt;font-family:Eurostile;color:blue'>Regards, <o:p></o:p></span></font></p>
<p class=MsoNormal><font size=3 color=blue face=Eurostile><span
style='font-size:12.0pt;font-family:Eurostile;color:blue'><o:p> </o:p></span></font></p>
<p class=MsoNormal><font size=3 color=blue face=Eurostile><span
style='font-size:12.0pt;font-family:Eurostile;color:blue'><o:p> </o:p></span></font></p>
<p class=MsoNormal><font size=3 color=blue face=Eurostile><span
style='font-size:12.0pt;font-family:Eurostile;color:blue'><o:p> </o:p></span></font></p>
<p class=MsoNormal><font size=3 color=blue face=Eurostile><span
style='font-size:12.0pt;font-family:Eurostile;color:blue'><o:p> </o:p></span></font></p>
<p class=MsoNormal><font size=2 color=blue face=Calibri><span style='font-size:
11.0pt;font-family:Calibri;color:blue'><img width=565 height=196
id="Picture_x005f_x0020_1" src="cid:image002.jpg@01CB5405.B6FC5170"
alt="Masri_new"><o:p></o:p></span></font></p>
<p class=MsoNormal><font size=3 color=blue face=Eurostile><span
style='font-size:12.0pt;font-family:Eurostile;color:blue'><o:p> </o:p></span></font></p>
<div style='border:none;border-top:solid #B5C4DF 1.0pt;padding:3.0pt 0in 0in 0in'>
<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'>
equest-users-bounces@lists.onebuilding.org
[mailto:equest-users-bounces@lists.onebuilding.org] <b><span style='font-weight:
bold'>On Behalf Of </span></b>Nicholas Lander<br>
<b><span style='font-weight:bold'>Sent:</span></b> Monday, September 13, 2010
3:43 PM<br>
<b><span style='font-weight:bold'>To:</span></b> equest-users<br>
<b><span style='font-weight:bold'>Subject:</span></b> [Equest-users] Equest,
heat recovery and separate outside air systems<o:p></o:p></span></font></p>
</div>
<p class=MsoNormal><font size=3 face="Times New Roman"><span style='font-size:
12.0pt'><o:p> </o:p></span></font></p>
<div>
<p class=MsoNormal><font size=3 face=Verdana><span style='font-size:12.0pt;
font-family:Verdana'>Folks, <br clear=all style='mso-special-character:
line-break'>
</span></font><o:p></o:p></p>
<div>
<p class=MsoNormal><font size=3 face=Verdana><span style='font-size:12.0pt;
font-family:Verdana'>First up, thanks to Bill and David for answering my last
question. </span></font> <o:p></o:p></p>
</div>
<div>
<p class=MsoNormal><font size=3 face=Verdana><span style='font-size:12.0pt;
font-family:Verdana'>My follow up is this:</span></font><o:p></o:p></p>
</div>
<div>
<p class=MsoNormal><font size=3 face="Times New Roman"><span style='font-size:
12.0pt'><o:p> </o:p></span></font></p>
</div>
<div>
<p class=MsoNormal><font size=3 face=Verdana><span style='font-size:12.0pt;
font-family:Verdana'>I'm trying to model a separate outside air system with
heat recovery. So I set it up so all systems take outside air from my OA system
(defined first). But if I then try to add heat recovery to the OA system total
energy (due to cooling and fans) goes up.</span></font><o:p></o:p></p>
</div>
<div>
<p class=MsoNormal><font size=3 face="Times New Roman"><span style='font-size:
12.0pt'><o:p> </o:p></span></font></p>
</div>
<div>
<p class=MsoNormal><font size=3 face=Verdana><span style='font-size:12.0pt;
font-family:Verdana'>I'm guessing that a factor in this is that the air goes to
all the other systems but then doesn't come back to the original OA system.
(How to you specify that?) Although, cooling loads should still go down since
exhaust air, whose quantify I specified, is still cooler than outside
air. </span></font><o:p></o:p></p>
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<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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<p class=MsoNormal><font size=3 face="Times New Roman"><span style='font-size:
12.0pt'>So, how do I show any saving with OA heat (or coolth) recovery, which I
know will be huge?<o:p></o:p></span></font></p>
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<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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<p class=MsoNormal><font size=3 face="Times New Roman"><span style='font-size:
12.0pt'>thanks in advance.<o:p></o:p></span></font></p>
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<p class=MsoNormal><font size=3 face="Times New Roman"><span style='font-size:
12.0pt'>Nick<o:p></o:p></span></font></p>
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