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<DIV dir=ltr align=left><SPAN class=730020015-16032010><FONT color=#0000ff
size=2 face=Arial>Nick,</FONT></SPAN></DIV>
<DIV dir=ltr align=left><SPAN class=730020015-16032010><FONT color=#0000ff
size=2 face=Arial></FONT></SPAN> </DIV>
<DIV dir=ltr align=left><SPAN class=730020015-16032010><FONT color=#0000ff
size=2 face=Arial>In the detailed modeling mode click on the system and then go
to the spreadsheet mode then select energy recovery ventilator drop down menu
and utilize all the inputs in that area, regarding energy recovery
ventilator, to input all your design information. I have used this
numerous times for the application that you are talking about. I would
caution you not to just use all the default efficiency numbers that will show up
automatically, but input as close as you can actual design numbers on efficiency
and especially on KW use, that you have involved in this design process.
You can input the KW use for your pump in the place of the fan KW or fan and
pump KW use together, if that is applicable. I have noticed often times
that inexperienced modelers often will just use the KW use default numbers,
because it is easy, rather than really taking the necessary design time to
figure out what the true KW use numbers are actually. These incorrect
input numbers will many times show the electrical use related to the heat
recovery system to be way higher than they actually are. This will often
make a very good energy conservation measure, incorrectly, into a real
dog. You should also take real care on how the system is controlled and
should probably run a number of different models, with different control
sequences, to see which control design works best for your particular heat
recovery design.</FONT></SPAN></DIV>
<DIV dir=ltr align=left><SPAN class=730020015-16032010><FONT color=#0000ff
size=2 face=Arial></FONT></SPAN> </DIV>
<DIV dir=ltr align=left><SPAN class=730020015-16032010><FONT color=#0000ff
size=2 face=Arial>Thanks,
<DIV align=left>
<DIV align=left><STRONG><EM><FONT color=#0000ff size=6
face="Bradley Hand ITC">David A. Bastow </FONT></EM></STRONG></DIV>
<DIV align=left><STRONG><EM><FONT face="Rockwell Extra Bold">McClure
Engineering, Inc. </FONT></EM></STRONG></DIV>
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<FONT size=2 face=Tahoma><B>From:</B> equest-users-bounces@lists.onebuilding.org
[mailto:equest-users-bounces@lists.onebuilding.org] <B>On Behalf Of </B>Nicholas
Couture, LEED AP<BR><B>Sent:</B> Tuesday, March 16, 2010 7:26 AM<BR><B>To:</B>
equest-users@lists.onebuilding.org<BR><B>Subject:</B> [Equest-users] Heat
recovery run around loop<BR></FONT><BR></DIV>
<DIV></DIV>
<DIV><SPAN class=914401113-16032010><FONT size=2 face=Arial>Hi
All:</FONT></SPAN></DIV>
<DIV><SPAN class=914401113-16032010><FONT size=2
face=Arial></FONT></SPAN> </DIV>
<DIV><SPAN class=914401113-16032010><FONT size=2 face=Arial>I would like to
ask how to model a heat recovery run around loop. Exhaust air from
four air handlers passes over a air to water coil, and the heat recovered to the
water loop is sent to the preheat coils of the four air handlers. Keep in
mind I have limited experience in the detailed interface.</FONT></SPAN></DIV>
<DIV><SPAN class=914401113-16032010><FONT size=2
face=Arial></FONT></SPAN> </DIV>
<DIV><SPAN class=914401113-16032010><FONT size=2 face=Arial>My first guess is
that I would have to create an air to water coil. Now, how do I connect
the exhaust air stream from the four air handlers... do I set an exhaust amount
to each zone??</FONT></SPAN></DIV>
<DIV><SPAN class=914401113-16032010><FONT size=2 face=Arial>Then would I create
a HW loop connecting the energy recovery coil to the four pre-heat
coils??</FONT></SPAN></DIV>
<DIV><SPAN class=914401113-16032010><FONT size=2
face=Arial></FONT></SPAN> </DIV>
<DIV><SPAN class=914401113-16032010><FONT size=2
face=Arial>thanks,</FONT></SPAN></DIV>
<DIV><FONT size=2></FONT> </DIV>
<DIV align=left><FONT color=#757575 size=3 face=Garamond>Nick Couture, LEED
AP</FONT></DIV>
<DIV align=left><FONT color=#757575
face=Garamond>Mechanical Engineer</FONT>
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