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<DIV><FONT size=2 face=Arial>Thank you very much to those who helped me out with
this... Finally made some good headway.</FONT></DIV>
<DIV><FONT size=2 face=Arial></FONT> </DIV>
<DIV><FONT size=2 face=Arial>Quick question....</FONT></DIV>
<DIV><FONT size=2 face=Arial></FONT> </DIV>
<DIV><FONT size=2 face=Arial>Modeling the DCV for my location (AZ) I shows only
a very small improvement in energy consumption for my HVAC, does this sound
correct?</FONT></DIV>
<DIV><FONT size=2 face=Arial>I have always been "led to believe" by the local
control companies that DCV is a huge improvement?</FONT></DIV>
<DIV><FONT size=2 face=Arial>Myth, sales "exaggeration", or have some of them
found a way to control the DCV in a manner that I am not modeling correctly?
</FONT></DIV>
<DIV><FONT size=2 face=Arial>Opinions or pointers appreciated.</FONT></DIV>
<DIV><FONT size=2 face=Arial></FONT> </DIV>
<DIV>----- Original Message ----- </DIV>
<BLOCKQUOTE
style="BORDER-LEFT: #000000 2px solid; PADDING-LEFT: 5px; PADDING-RIGHT: 0px; MARGIN-LEFT: 5px; MARGIN-RIGHT: 0px">
<DIV
style="FONT: 10pt arial; BACKGROUND: #e4e4e4; font-color: black"><B>From:</B>
<A title=kwalkerman@gmail.com href="mailto:kwalkerman@gmail.com">Karen
Walkerman</A> </DIV>
<DIV style="FONT: 10pt arial"><B>To:</B> <A title=MatthewRLarson@eaton.com
href="mailto:MatthewRLarson@eaton.com">MatthewRLarson@eaton.com</A> </DIV>
<DIV style="FONT: 10pt arial"><B>Cc:</B> <A title=GCollins@glumac.com
href="mailto:GCollins@glumac.com">GCollins@glumac.com</A> ; <A
title=cwelch@capitalreviewgroup.com
href="mailto:cwelch@capitalreviewgroup.com">cwelch@capitalreviewgroup.com</A>
; <A title=equest-users@lists.onebuilding.org
href="mailto:equest-users@lists.onebuilding.org">equest-users@lists.onebuilding.org</A>
</DIV>
<DIV style="FONT: 10pt arial"><B>Sent:</B> Wednesday, March 09, 2011 2:48
PM</DIV>
<DIV style="FONT: 10pt arial"><B>Subject:</B> Re: [Equest-users] EMS Control
System Modeling</DIV>
<DIV><BR></DIV>
<DIV>Regarding DCV there are a few things to know:<BR></DIV>
<DIV><BR></DIV>
<DIV>1. demand is based on the number of people in the space and the
outdoor air per person specified at the zone level. If your outdoor air
rate is not entered as a per person air rate, then DCV will not work
properly</DIV>
<DIV><BR></DIV>
<DIV>2. If your fans are not constant volume, ie they can cycle or they
are variable speed, then you need to make sure that the proper ventilation air
is supplied in your base case. Usually, I set the fan flow to
'variable'. If, in reality, the fans cycle on and off, I change the fan
curve to linear. Then, i set the minimum flow to be equal to the outdoor
air rate fraction. Otherwise, implementing DCV can actually RAISE
energy.</DIV><BR>
<DIV class=gmail_quote>On Wed, Mar 9, 2011 at 10:59 AM, <SPAN dir=ltr><<A
href="mailto:MatthewRLarson@eaton.com">MatthewRLarson@eaton.com</A>></SPAN>
wrote:<BR>
<BLOCKQUOTE
style="BORDER-LEFT: #ccc 1px solid; MARGIN: 0px 0px 0px 0.8ex; PADDING-LEFT: 1ex"
class=gmail_quote>
<DIV>
<DIV>
<DIV>
<P class=MsoNormal><SPAN
style="COLOR: #1f497d; FONT-SIZE: 11pt">Charles,</SPAN></P>
<P class=MsoNormal><SPAN
style="COLOR: #1f497d; FONT-SIZE: 11pt"></SPAN> </P>
<P class=MsoNormal><SPAN style="COLOR: #1f497d; FONT-SIZE: 11pt">Regarding
the DCV, you need to specify the “Minimum OA Control Method” under the
Outdoor Air tab for the system to state whether the CO2 sensor is in the
return or in the space. Then at the zone level, specify the “Minimum
Flow Control” under the Air Flow tab to state if the minimum OA resets up or
down depending on occupancy level. To ensure the amount of OA going
into a space doesn’t go below the ASHRAE 62.1 minimum, I always input the OA
Flow per Person and/or Flow per Area at the zone level as well. DCV
has always been something I’ve been a little dicey about so any additional
suggestions/comments would be great.</SPAN></P>
<P class=MsoNormal><SPAN
style="COLOR: #1f497d; FONT-SIZE: 11pt"></SPAN> </P>
<P class=MsoNormal><SPAN
style="COLOR: #1f497d; FONT-SIZE: 11pt">Thanks,</SPAN></P>
<P class=MsoNormal><SPAN
style="COLOR: #1f497d; FONT-SIZE: 11pt"></SPAN> </P>
<DIV>
<P class=MsoNormal><B><SPAN style="COLOR: black; FONT-SIZE: 10pt"
lang=EN-GB>Matthew Larson, LEED AP BD+C<BR></SPAN></B><SPAN
style="COLOR: black; FONT-SIZE: 10pt" lang=EN-GB>Project Engineer</SPAN></P>
<P style="MARGIN-BOTTOM: 12pt" class=MsoNormal><SPAN
style="COLOR: black; FONT-SIZE: 10pt" lang=EN-GB>Energy Solutions
Group</SPAN></P>
<P class=MsoNormal><SPAN style="COLOR: black; FONT-SIZE: 10pt">E M C
Engineers, Inc.<BR>Eaton’s Electrical Services & Systems <BR>143 Union
Blvd, Suite 350<BR>Lakewood, CO 80228<BR>tel: +1 303
328-3419<BR>mobile: +1 303 668-2511<BR>fax: +1 303 974-1239</SPAN></P>
<P class=MsoNormal><SPAN style="COLOR: black; FONT-SIZE: 10pt"><A
href="mailto:MatthewRLarson@Eaton.com"
target=_blank>MatthewRLarson@Eaton.com</A> <BR><A
href="http://www.eaton.com/energysolutions"
target=_blank>www.eaton.com/energysolutions</A> </SPAN></P>
<P class=MsoNormal><SPAN style="COLOR: #1f497d; FONT-SIZE: 11pt"><IMG
border=0 alt=image001 width=198 height=101></SPAN></P></DIV>
<P class=MsoNormal><SPAN
style="COLOR: #1f497d; FONT-SIZE: 11pt"></SPAN> </P>
<DIV>
<DIV
style="BORDER-BOTTOM: medium none; BORDER-LEFT: medium none; PADDING-BOTTOM: 0in; PADDING-LEFT: 0in; PADDING-RIGHT: 0in; BORDER-TOP: #b5c4df 1pt solid; BORDER-RIGHT: medium none; PADDING-TOP: 3pt">
<P class=MsoNormal><B><SPAN style="FONT-SIZE: 10pt">From:</SPAN></B><SPAN
style="FONT-SIZE: 10pt"> <A
href="mailto:equest-users-bounces@lists.onebuilding.org"
target=_blank>equest-users-bounces@lists.onebuilding.org</A> [mailto:<A
href="mailto:equest-users-bounces@lists.onebuilding.org"
target=_blank>equest-users-bounces@lists.onebuilding.org</A>] <B>On Behalf
Of </B>Greg Collins<BR><B>Sent:</B> Tuesday, March 08, 2011 5:53
PM<BR><B>To:</B> Charles Welch; <A
href="mailto:equest-users@lists.onebuilding.org"
target=_blank>equest-users@lists.onebuilding.org</A><BR><B>Subject:</B> Re:
[Equest-users] EMS Control System Modeling</SPAN></P></DIV></DIV>
<DIV>
<DIV class=h5>
<P class=MsoNormal> </P>
<P class=MsoNormal><SPAN style="COLOR: #1f497d; FONT-SIZE: 11pt">Charles - A
quick suggestion for the setback is to try setting your system fans to
"cycle on any." Otherwise, your system might not kick on to maintain
setback temperatures. </SPAN></P>
<P class=MsoNormal><SPAN
style="COLOR: #1f497d; FONT-SIZE: 11pt"></SPAN> </P>
<DIV>
<P class=MsoNormal><B><SPAN style="COLOR: #1f497d; FONT-SIZE: 10pt">Greg
Collins</SPAN></B><SPAN style="COLOR: #1f497d"><BR></SPAN><SPAN
style="COLOR: #1f497d; FONT-SIZE: 10pt">GLUMAC | (949)
833-8190</SPAN></P></DIV>
<P class=MsoNormal><SPAN
style="COLOR: #1f497d; FONT-SIZE: 11pt"></SPAN> </P>
<DIV>
<DIV
style="BORDER-BOTTOM: medium none; BORDER-LEFT: medium none; PADDING-BOTTOM: 0in; PADDING-LEFT: 0in; PADDING-RIGHT: 0in; BORDER-TOP: #b5c4df 1pt solid; BORDER-RIGHT: medium none; PADDING-TOP: 3pt">
<P class=MsoNormal><B><SPAN style="FONT-SIZE: 10pt">From:</SPAN></B><SPAN
style="FONT-SIZE: 10pt"> Charles Welch [mailto:<A
href="mailto:cwelch@capitalreviewgroup.com"
target=_blank>cwelch@capitalreviewgroup.com</A>] <BR><B>Sent:</B> Tuesday,
March 08, 2011 4:24 PM<BR><B>To:</B> <A
href="mailto:equest-users@lists.onebuilding.org"
target=_blank>equest-users@lists.onebuilding.org</A><BR><B>Subject:</B>
[Equest-users] EMS Control System Modeling</SPAN></P></DIV></DIV>
<P class=MsoNormal> </P>
<DIV>
<P class=MsoNormal><SPAN style="FONT-SIZE: 10pt">I am doing an quick
estimate for adding EMS control to an existing HVAC system (schools) which
incorporate the following measures</SPAN></P></DIV>
<DIV>
<P class=MsoNormal> </P></DIV>
<DIV>
<P class=MsoNormal><SPAN style="FONT-SIZE: 10pt">1)
Automatic thermostat setbacks for building occupation</SPAN></P></DIV>
<DIV>
<P class=MsoNormal><SPAN style="FONT-SIZE: 10pt">2) Demand
controlled ventilation</SPAN></P></DIV>
<DIV>
<P class=MsoNormal><SPAN style="FONT-SIZE: 10pt">3)
Economizers</SPAN></P></DIV>
<DIV>
<P class=MsoNormal> </P></DIV>
<DIV>
<P class=MsoNormal><SPAN style="FONT-SIZE: 10pt">Here are my
"challenges"<BR>1) Simulation with setback temperatures
shows no reduction in energy</SPAN></P></DIV>
<DIV>
<P class=MsoNormal><SPAN style="FONT-SIZE: 10pt">2) I am
unsure how to handle DCV</SPAN></P></DIV>
<DIV>
<P class=MsoNormal><SPAN style="FONT-SIZE: 10pt">3)
Simulation with economizers show very little reduction</SPAN></P></DIV>
<DIV>
<P class=MsoNormal> </P></DIV>
<DIV>
<P class=MsoNormal><SPAN style="FONT-SIZE: 10pt">I would appreciate any
pointers, suggestions, etc. on what to do here.</SPAN></P></DIV>
<DIV>
<P class=MsoNormal><SPAN style="FONT-SIZE: 10pt">I would especially
appreciate any example files to see how you input the data to get proper
results.</SPAN></P></DIV>
<DIV>
<P class=MsoNormal> </P></DIV>
<DIV>
<P class=MsoNormal> </P></DIV>
<DIV>
<P class=MsoNormal><SPAN style="FONT-SIZE: 10pt">Thanks in advance for any
help.</SPAN></P></DIV>
<DIV>
<P class=MsoNormal> </P></DIV>
<DIV>
<P
class=MsoNormal> </P></DIV></DIV></DIV></DIV></DIV></DIV><BR>_______________________________________________<BR>Equest-users
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