<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.0 Transitional//EN">
<HTML xmlns="http://www.w3.org/TR/REC-html40" xmlns:o =
"urn:schemas-microsoft-com:office:office" xmlns:w =
"urn:schemas-microsoft-com:office:word" xmlns:st1 =
"urn:schemas-microsoft-com:office:smarttags"><HEAD>
<META http-equiv=Content-Type content="text/html; charset=us-ascii">
<META content="MSHTML 6.00.2900.2963" name=GENERATOR><o:SmartTagType
name="place"
namespaceuri="urn:schemas-microsoft-com:office:smarttags"></o:SmartTagType><o:SmartTagType
name="PostalCode"
namespaceuri="urn:schemas-microsoft-com:office:smarttags"></o:SmartTagType><o:SmartTagType
name="State"
namespaceuri="urn:schemas-microsoft-com:office:smarttags"></o:SmartTagType><o:SmartTagType
name="City"
namespaceuri="urn:schemas-microsoft-com:office:smarttags"></o:SmartTagType><o:SmartTagType
name="Street"
namespaceuri="urn:schemas-microsoft-com:office:smarttags"></o:SmartTagType><o:SmartTagType
name="address"
namespaceuri="urn:schemas-microsoft-com:office:smarttags"></o:SmartTagType><o:SmartTagType
name="PersonName"
namespaceuri="urn:schemas-microsoft-com:office:smarttags"></o:SmartTagType><!--[if !mso]>
<STYLE>st1\:* {
BEHAVIOR: url(#default#ieooui)
}
</STYLE>
<![endif]-->
<STYLE>@font-face {
font-family: Batang;
}
@font-face {
font-family: Humanst521 Lt BT;
}
@font-face {
font-family: Arial Black;
}
@font-face {
font-family: @Batang;
}
@page Section1 {size: 8.5in 11.0in; margin: 1.0in 1.25in 1.0in 1.25in; }
P.MsoNormal {
FONT-SIZE: 12pt; MARGIN: 0in 0in 0pt; FONT-FAMILY: "Times New Roman"
}
LI.MsoNormal {
FONT-SIZE: 12pt; MARGIN: 0in 0in 0pt; FONT-FAMILY: "Times New Roman"
}
DIV.MsoNormal {
FONT-SIZE: 12pt; MARGIN: 0in 0in 0pt; FONT-FAMILY: "Times New Roman"
}
H1 {
FONT-WEIGHT: bold; FONT-SIZE: 16pt; MARGIN: 12pt 0in 3pt; FONT-FAMILY: Arial
}
A:link {
COLOR: blue; TEXT-DECORATION: underline
}
SPAN.MsoHyperlink {
COLOR: blue; TEXT-DECORATION: underline
}
A:visited {
COLOR: purple; TEXT-DECORATION: underline
}
SPAN.MsoHyperlinkFollowed {
COLOR: purple; TEXT-DECORATION: underline
}
P {
FONT-SIZE: 12pt; MARGIN-LEFT: 0in; MARGIN-RIGHT: 0in; FONT-FAMILY: "Times New Roman"; mso-margin-top-alt: auto; mso-margin-bottom-alt: auto
}
P.EEMLists {
FONT-WEIGHT: bold; FONT-SIZE: 16pt; MARGIN: 12pt 0in 3pt; FONT-FAMILY: "Humanst521 Lt BT"; TEXT-ALIGN: center
}
LI.EEMLists {
FONT-WEIGHT: bold; FONT-SIZE: 16pt; MARGIN: 12pt 0in 3pt; FONT-FAMILY: "Humanst521 Lt BT"; TEXT-ALIGN: center
}
DIV.EEMLists {
FONT-WEIGHT: bold; FONT-SIZE: 16pt; MARGIN: 12pt 0in 3pt; FONT-FAMILY: "Humanst521 Lt BT"; TEXT-ALIGN: center
}
SPAN.EmailStyle18 {
COLOR: windowtext; FONT-FAMILY: Arial; mso-style-type: personal-compose
}
DIV.Section1 {
page: Section1
}
OL {
MARGIN-BOTTOM: 0in
}
UL {
MARGIN-BOTTOM: 0in
}
</STYLE>
</HEAD>
<BODY lang=EN-US vLink=purple link=blue>
<DIV dir=ltr align=left><SPAN class=218360721-03102007><FONT face=Arial
color=#0000ff size=2>Andrew:</FONT></SPAN></DIV>
<DIV dir=ltr align=left><SPAN class=218360721-03102007><FONT face=Arial
color=#0000ff size=2></FONT></SPAN> </DIV>
<DIV dir=ltr align=left><SPAN class=218360721-03102007><FONT face=Arial
color=#0000ff size=2>I don't know what your climatic area is, but why should ANY
heating show up at the central unit? A VAV w/reheat, in my meager experience, is
controlling the central cooling coil to 55 DegF and adjusting reheat coils (and
VAV airflows) from there. When winter shows up, your cooling coil is REALLY
backed off (or off) and the VAV still flies, with heat added at the space
(terminal) level.</FONT></SPAN></DIV>
<DIV dir=ltr align=left><SPAN class=218360721-03102007><FONT face=Arial
color=#0000ff size=2></FONT></SPAN> </DIV>
<DIV dir=ltr align=left><SPAN class=218360721-03102007><FONT face=Arial
color=#0000ff size=2>The only purpose you may have for a central heating coil is
to preheat outside air to, say, 40 DegF. Depending on where your climate is,
this may RARELY happen?</FONT></SPAN></DIV>
<DIV dir=ltr align=left><SPAN class=218360721-03102007><FONT face=Arial
color=#0000ff size=2></FONT></SPAN> </DIV>
<DIV dir=ltr align=left><SPAN class=218360721-03102007><FONT face=Arial
color=#0000ff size=2>Does this sound right, folks?</FONT></SPAN><BR></DIV>
<DIV class=OutlookMessageHeader lang=en-us dir=ltr align=left>
<HR tabIndex=-1>
<FONT face=Tahoma size=2><B>From:</B> BLDG-SIM@gard.com
[mailto:BLDG-SIM@gard.com] <B>On Behalf Of </B>Andrew Craig<BR><B>Sent:</B>
Wednesday, October 03, 2007 1:35 PM<BR><B>To:</B>
BLDG-SIM@gard.com<BR><B>Cc:</B> Andy Frichtl<BR><B>Subject:</B> [BLDG-SIM]
Appendix G Baseline HVAC system and modeling packaged VAV with gas
heat<BR></FONT><BR></DIV>
<DIV></DIV>
<DIV class=Section1>
<P class=MsoNormal><FONT face=Arial size=2><SPAN
style="FONT-SIZE: 10pt; FONT-FAMILY: Arial">I have two questions that have come
up recently…<o:p></o:p></SPAN></FONT></P>
<P class=MsoNormal><FONT face=Arial size=2><SPAN
style="FONT-SIZE: 10pt; FONT-FAMILY: Arial"><o:p> </o:p></SPAN></FONT></P>
<OL style="MARGIN-TOP: 0in" type=1>
<LI class=MsoNormal style="mso-list: l0 level1 lfo1"><FONT face=Arial
size=2><SPAN style="FONT-SIZE: 10pt; FONT-FAMILY: Arial">If the a proposed
building pursuing LEED is going to use a Packaged VAV system with a gas
furnace in the unit and electric reheat in the boxes, would the baseline
building (according to ASHRAE Appendix G) fall under the Fossil/Electric
Hybrid category or the Electric category since that is the predominant heating
source?<o:p></o:p></SPAN></FONT>
<LI class=MsoNormal style="mso-list: l0 level1 lfo1"><FONT face=Arial
size=2><SPAN style="FONT-SIZE: 10pt; FONT-FAMILY: Arial">Secondly, what is the
best way to model this type of system in eQUEST? I have experimented
with first defining a packaged VAV unit in the wizard with hot water coils as
the heating source. Then in the detailed edit mode, I changed the system
“Heat Source” to furnace and “Zone Heat Source” to electric and deleted the
boiler and hot water loop. When I simulated this model, no natural gas
usage showed up in the BEPS report under Space Heating, however, there was a
tiny amount (~2% of total heating energy) that appeared in the Pumps & Aux
category. Can anyone explain what’s happening and/or suggest the best
way to model this kind of system? As a side note, from projects we have
monitored here in Oregon, we would expect to see about 30% of the total
heating energy use go to natural gas for this type of system, primarily from
morning warm-up.<o:p></o:p></SPAN></FONT> </LI></OL>
<P class=MsoNormal><FONT face=Arial size=2><SPAN
style="FONT-SIZE: 10pt; FONT-FAMILY: Arial"><o:p> </o:p></SPAN></FONT></P>
<P class=MsoNormal><FONT face=Arial size=2><SPAN
style="FONT-SIZE: 10pt; FONT-FAMILY: Arial">Thanks for your
input.<o:p></o:p></SPAN></FONT></P>
<P class=MsoNormal><FONT face=Arial size=2><SPAN
style="FONT-SIZE: 10pt; FONT-FAMILY: Arial"><o:p> </o:p></SPAN></FONT></P>
<P class=MsoNormal><FONT face=Arial size=2><SPAN
style="FONT-SIZE: 10pt; FONT-FAMILY: Arial">Regards,<o:p></o:p></SPAN></FONT></P>
<P class=MsoNormal><FONT face=Arial size=2><SPAN
style="FONT-SIZE: 10pt; FONT-FAMILY: Arial"><o:p> </o:p></SPAN></FONT></P>
<P><st1:PersonName w:st="on"><B><FONT face=Arial color=#816d5b size=2><SPAN
style="FONT-WEIGHT: bold; FONT-SIZE: 10pt; COLOR: #816d5b; FONT-FAMILY: Arial">Andrew
Craig</SPAN></FONT></B></st1:PersonName><B><FONT face=Arial color=#816d5b
size=2><SPAN
style="FONT-WEIGHT: bold; FONT-SIZE: 10pt; COLOR: #816d5b; FONT-FAMILY: Arial">,
EIT, LEED® AP</SPAN></FONT></B> <FONT face=Arial color=#1e1f48 size=2><SPAN
style="FONT-SIZE: 10pt; COLOR: #1e1f48; FONT-FAMILY: Arial">| </SPAN></FONT><FONT
face=Arial color=#816d5b size=2><SPAN
style="FONT-SIZE: 10pt; COLOR: #816d5b; FONT-FAMILY: Arial">Mechanical
Designer</SPAN></FONT><o:p></o:p></P>
<P><FONT face="Arial Black" color=#1e1f48 size=3><SPAN
style="FONT-SIZE: 12pt; COLOR: #1e1f48; FONT-FAMILY: 'Arial Black'">INTERFACE
</SPAN></FONT><FONT face=Arial color=#1e1f48><SPAN
style="COLOR: #1e1f48; FONT-FAMILY: Arial">ENGINEERING
</SPAN></FONT><BR><st1:Street w:st="on"><st1:address
style="BACKGROUND-POSITION: left bottom; BACKGROUND-IMAGE: url(res://ietag.dll/#34/#1001); BACKGROUND-REPEAT: repeat-x"
tabIndex=0 w:st="on"><FONT face=Arial color=#816d5b size=2><SPAN
style="FONT-SIZE: 10pt; COLOR: #816d5b; FONT-FAMILY: Arial">708 SW Third
Avenue</SPAN></FONT></st1:address></st1:Street><FONT face=Arial color=#816d5b
size=2><SPAN style="FONT-SIZE: 10pt; COLOR: #816d5b; FONT-FAMILY: Arial">
</SPAN></FONT><FONT face=Arial color=#1e1f48 size=2><SPAN
style="FONT-SIZE: 10pt; COLOR: #1e1f48; FONT-FAMILY: Arial">|
</SPAN></FONT><st1:address
style="BACKGROUND-POSITION: left bottom; BACKGROUND-IMAGE: url(res://ietag.dll/#34/#1001); BACKGROUND-REPEAT: repeat-x"
tabIndex=0 w:st="on"><st1:Street w:st="on"><FONT face=Arial color=#816d5b
size=2><SPAN
style="FONT-SIZE: 10pt; COLOR: #816d5b; FONT-FAMILY: Arial">Suite</SPAN></FONT></st1:Street><FONT
face=Arial color=#816d5b size=2><SPAN
style="FONT-SIZE: 10pt; COLOR: #816d5b; FONT-FAMILY: Arial">
400</SPAN></FONT></st1:address><FONT face=Arial color=#816d5b size=2><SPAN
style="FONT-SIZE: 10pt; COLOR: #816d5b; FONT-FAMILY: Arial"> </SPAN></FONT><FONT
face=Arial color=#1e1f48 size=2><SPAN
style="FONT-SIZE: 10pt; COLOR: #1e1f48; FONT-FAMILY: Arial">|
</SPAN></FONT><st1:place w:st="on"><st1:City w:st="on"><FONT face=Arial
color=#816d5b size=2><SPAN
style="FONT-SIZE: 10pt; COLOR: #816d5b; FONT-FAMILY: Arial">Portland</SPAN></FONT></st1:City><FONT
face=Arial color=#816d5b size=2><SPAN
style="FONT-SIZE: 10pt; COLOR: #816d5b; FONT-FAMILY: Arial">, <st1:State
w:st="on">OR</st1:State> <st1:PostalCode
w:st="on">97204</st1:PostalCode></SPAN></FONT></st1:place><FONT face=Arial
color=#816d5b size=2><SPAN
style="FONT-SIZE: 10pt; COLOR: #816d5b; FONT-FAMILY: Arial">
</SPAN></FONT><o:p></o:p></P>
<P><B><FONT face=Arial color=#1e1f48 size=2><SPAN
style="FONT-WEIGHT: bold; FONT-SIZE: 10pt; COLOR: #1e1f48; FONT-FAMILY: Arial">direct:
</SPAN></FONT></B><FONT face=Arial color=#816d5b size=2><SPAN
style="FONT-SIZE: 10pt; COLOR: #816d5b; FONT-FAMILY: Arial">503.382.2696</SPAN></FONT><BR><B><FONT
face=Arial color=#1e1f48 size=2><SPAN
style="FONT-WEIGHT: bold; FONT-SIZE: 10pt; COLOR: #1e1f48; FONT-FAMILY: Arial">office:
</SPAN></FONT></B><FONT face=Arial color=#816d5b size=2><SPAN
style="FONT-SIZE: 10pt; COLOR: #816d5b; FONT-FAMILY: Arial">503.382.2266</SPAN></FONT><BR><B><FONT
face=Arial color=#1e1f48 size=2><SPAN
style="FONT-WEIGHT: bold; FONT-SIZE: 10pt; COLOR: #1e1f48; FONT-FAMILY: Arial">fax:
</SPAN></FONT></B><FONT face=Arial color=#816d5b size=2><SPAN
style="FONT-SIZE: 10pt; COLOR: #816d5b; FONT-FAMILY: Arial">503.382.2262</SPAN></FONT><BR><STRONG><B><FONT
face=Arial color=#1e1f48 size=2><SPAN
style="FONT-SIZE: 10pt; COLOR: #1e1f48; FONT-FAMILY: Arial">email:
</SPAN></FONT></B></STRONG><FONT face=Arial color=#816d5b size=2><SPAN
style="FONT-SIZE: 10pt; COLOR: #816d5b; FONT-FAMILY: Arial">Andrew_C@ieice.com</SPAN></FONT><BR><B><FONT
face=Arial color=#1e1f48 size=2><SPAN
style="FONT-WEIGHT: bold; FONT-SIZE: 10pt; COLOR: #1e1f48; FONT-FAMILY: Arial">web:
</SPAN></FONT></B><FONT face=Arial color=#816d5b size=2><SPAN
style="FONT-SIZE: 10pt; COLOR: #816d5b; FONT-FAMILY: Arial">www.ieice.com</SPAN></FONT>
<o:p></o:p></P>
<P><FONT face=Arial color=#1e1f48 size=1><SPAN
style="FONT-SIZE: 8pt; COLOR: #1e1f48; FONT-FAMILY: Arial">Consultants of Choice
to the Built Environment for over 35 years</SPAN></FONT><BR><st1:City
w:st="on"><FONT face=Arial color=#816d5b size=1><SPAN
style="FONT-SIZE: 7.5pt; COLOR: #816d5b; FONT-FAMILY: Arial">Kirkland</SPAN></FONT></st1:City><FONT
face=Arial color=#816d5b size=1><SPAN
style="FONT-SIZE: 7.5pt; COLOR: #816d5b; FONT-FAMILY: Arial">, <st1:State
w:st="on">WA</st1:State> </SPAN></FONT><FONT face=Arial color=#1e1f48
size=1><SPAN style="FONT-SIZE: 7.5pt; COLOR: #1e1f48; FONT-FAMILY: Arial">|
</SPAN></FONT><st1:City w:st="on"><FONT face=Arial color=#816d5b size=1><SPAN
style="FONT-SIZE: 7.5pt; COLOR: #816d5b; FONT-FAMILY: Arial">Portland</SPAN></FONT></st1:City><FONT
face=Arial color=#816d5b size=1><SPAN
style="FONT-SIZE: 7.5pt; COLOR: #816d5b; FONT-FAMILY: Arial">, <st1:State
w:st="on">OR</st1:State> </SPAN></FONT><FONT face=Arial color=#1e1f48
size=1><SPAN style="FONT-SIZE: 7.5pt; COLOR: #1e1f48; FONT-FAMILY: Arial">|
</SPAN></FONT><st1:City w:st="on"><FONT face=Arial color=#816d5b size=1><SPAN
style="FONT-SIZE: 7.5pt; COLOR: #816d5b; FONT-FAMILY: Arial">Sacramento</SPAN></FONT></st1:City><FONT
face=Arial color=#816d5b size=1><SPAN
style="FONT-SIZE: 7.5pt; COLOR: #816d5b; FONT-FAMILY: Arial">, <st1:State
w:st="on">CA</st1:State> </SPAN></FONT><FONT face=Arial color=#1e1f48
size=1><SPAN style="FONT-SIZE: 7.5pt; COLOR: #1e1f48; FONT-FAMILY: Arial">|
</SPAN></FONT><st1:City w:st="on"><FONT face=Arial color=#816d5b size=1><SPAN
style="FONT-SIZE: 7.5pt; COLOR: #816d5b; FONT-FAMILY: Arial">Salem</SPAN></FONT></st1:City><FONT
face=Arial color=#816d5b size=1><SPAN
style="FONT-SIZE: 7.5pt; COLOR: #816d5b; FONT-FAMILY: Arial">, <st1:State
w:st="on">OR</st1:State> </SPAN></FONT><FONT face=Arial color=#1e1f48
size=1><SPAN style="FONT-SIZE: 7.5pt; COLOR: #1e1f48; FONT-FAMILY: Arial">|
</SPAN></FONT><st1:place w:st="on"><st1:City w:st="on"><FONT face=Arial
color=#816d5b size=1><SPAN
style="FONT-SIZE: 7.5pt; COLOR: #816d5b; FONT-FAMILY: Arial">SanFrancisco</SPAN></FONT></st1:City><FONT
face=Arial color=#816d5b size=1><SPAN
style="FONT-SIZE: 7.5pt; COLOR: #816d5b; FONT-FAMILY: Arial">, <st1:State
w:st="on">CA</st1:State></SPAN></FONT></st1:place><o:p></o:p></P>
<P class=MsoNormal><FONT face="Times New Roman" size=3><SPAN
style="FONT-SIZE: 12pt"><o:p> </o:p></SPAN></FONT></P></DIV><PRE>
==================
You received this e-mail because you are subscribed
to the BLDG-SIM@GARD.COM mailing list. To unsubscribe
from this mailing list send a blank message to
BLDG-SIM-UNSUBSCRIBE@GARD.COM
</PRE><PRE>
===========================
You received this e-mail because you are subscribed
to the BLDG-SIM@GARD.COM mailing list. To unsubscribe
from this mailing list send a blank message to
BLDG-SIM-UNSUBSCRIBE@GARD.COM
</PRE></BODY></HTML>