<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.0 Transitional//EN">
<HTML xmlns="http://www.w3.org/TR/REC-html40" xmlns:v =
"urn:schemas-microsoft-com:vml" 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 6.00.5730.11" name=GENERATOR><!--[if !mso]>
<STYLE>v\:* {
BEHAVIOR: url(#default#VML)
}
o\:* {
BEHAVIOR: url(#default#VML)
}
w\:* {
BEHAVIOR: url(#default#VML)
}
.shape {
BEHAVIOR: url(#default#VML)
}
</STYLE>
<![endif]--><o:SmartTagType name="country-region"
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="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="City"
namespaceuri="urn:schemas-microsoft-com:office:smarttags"></o:SmartTagType><o:SmartTagType
name="place"
namespaceuri="urn:schemas-microsoft-com:office:smarttags"></o:SmartTagType><o:SmartTagType
name="State"
namespaceuri="urn:schemas-microsoft-com:office:smarttags"></o:SmartTagType><!--[if !mso]>
<STYLE>st1\:* {
BEHAVIOR: url(#default#ieooui)
}
</STYLE>
<![endif]-->
<STYLE>@font-face {
font-family: Tahoma;
}
@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"
}
H5 {
FONT-SIZE: 10pt; MARGIN-LEFT: 0in; MARGIN-RIGHT: 0in; FONT-FAMILY: "Times New Roman"; mso-margin-top-alt: auto; mso-margin-bottom-alt: auto
}
P.MsoBodyText {
FONT-SIZE: 12pt; MARGIN-LEFT: 0in; MARGIN-RIGHT: 0in; FONT-FAMILY: "Times New Roman"; mso-margin-top-alt: auto; mso-margin-bottom-alt: auto
}
LI.MsoBodyText {
FONT-SIZE: 12pt; MARGIN-LEFT: 0in; MARGIN-RIGHT: 0in; FONT-FAMILY: "Times New Roman"; mso-margin-top-alt: auto; mso-margin-bottom-alt: auto
}
DIV.MsoBodyText {
FONT-SIZE: 12pt; MARGIN-LEFT: 0in; MARGIN-RIGHT: 0in; FONT-FAMILY: "Times New Roman"; mso-margin-top-alt: auto; mso-margin-bottom-alt: auto
}
A:link {
COLOR: blue; TEXT-DECORATION: underline
}
SPAN.MsoHyperlink {
COLOR: blue; TEXT-DECORATION: underline
}
A:visited {
COLOR: blue; TEXT-DECORATION: underline
}
SPAN.MsoHyperlinkFollowed {
COLOR: blue; TEXT-DECORATION: underline
}
PRE {
FONT-SIZE: 10pt; MARGIN: 0in 0in 0pt; FONT-FAMILY: "Courier New"
}
SPAN.highlight {
FONT-WEIGHT: bold; FONT-STYLE: italic; FONT-FAMILY: Arial
}
P.tabletext {
FONT-SIZE: 8pt; MARGIN: 3pt 0in; LINE-HEIGHT: 11pt; FONT-FAMILY: Arial
}
LI.tabletext {
FONT-SIZE: 8pt; MARGIN: 3pt 0in; LINE-HEIGHT: 11pt; FONT-FAMILY: Arial
}
DIV.tabletext {
FONT-SIZE: 8pt; MARGIN: 3pt 0in; LINE-HEIGHT: 11pt; FONT-FAMILY: Arial
}
SPAN.EmailStyle23 {
COLOR: navy; FONT-FAMILY: Arial; mso-style-type: personal-reply
}
DIV.Section1 {
page: Section1
}
</STYLE>
</HEAD>
<BODY lang=EN-US vLink=blue link=blue>
<DIV dir=ltr align=left><SPAN class=304414423-12102007><FONT face="Courier New"
color=#0000ff size=2>Good point Fred, for larger unitary packages and for
dialing-in energy savings rebate studies. I did say 'arguably', and
yours is an insightful observation. Scanned all 90.1-2004 but didn't
see the reference you alluded to -- if you can be more specific please
advise.</FONT></SPAN></DIV>
<DIV dir=ltr align=left><SPAN class=304414423-12102007><FONT face="Courier New"
color=#0000ff size=2></FONT></SPAN> </DIV>
<DIV dir=ltr align=left><SPAN class=304414423-12102007><FONT face="Courier New"
color=#0000ff size=2>Given <SPAN class=304414423-12102007><FONT
face="Courier New" color=#0000ff size=2>the small heatpumps my firm is
accustomed to installing, coupled with the fuzzy level of design at which we're
doing our preliminary energy studies, the simplification of discounting fan
operation when compressors aren't running I think is well within the error bars
of the overall study.</FONT></SPAN></FONT></SPAN></DIV>
<DIV dir=ltr align=left><SPAN class=304414423-12102007><FONT face="Courier New"
color=#0000ff size=2></FONT></SPAN> </DIV>
<DIV dir=ltr align=left><SPAN class=304414423-12102007><FONT face="Courier New"
color=#0000ff size=2>Which doesn't provide any comfort from the realization that
this business gives one plenty of cause to ask where picking the
theoretical flyspecs out of manufacturer's published pepper has crossed a
threshold of mind-numbingly diminished returns!</FONT></SPAN><SPAN
class=304414423-12102007><FONT face="Courier New" color=#0000ff
size=2></FONT></SPAN><SPAN class=304414423-12102007><FONT face="Courier New"
color=#0000ff size=2></FONT></SPAN></DIV>
<DIV dir=ltr align=left><SPAN class=304414423-12102007></SPAN><SPAN
class=304414423-12102007><FONT face="Courier New" color=#0000ff
size=2></FONT></SPAN> </DIV>
<DIV dir=ltr align=left><SPAN class=304414423-12102007><FONT face="Courier New"
color=#0000ff size=2>Regards </FONT></SPAN></DIV>
<DIV align=left>
<DIV align=left><FONT face=Arial size=2></FONT> </DIV><SPAN
style="FONT-SIZE: 10pt; FONT-FAMILY: Arial; mso-bidi-font-size: 12.0pt">
<DIV><SPAN
style="FONT-SIZE: 10pt; COLOR: gray; FONT-FAMILY: Arial; mso-bidi-font-size: 12.0pt"><SPAN
class=212011020-11052004><FONT color=#000000>Brandon Nichols,
PE, LEED<SUP><SPAN style="FONT-SIZE: 8pt">®</SPAN></SUP>
AP</FONT></SPAN></SPAN></DIV>
<DIV><SPAN
style="FONT-SIZE: 10pt; COLOR: gray; FONT-FAMILY: Arial; mso-bidi-font-size: 12.0pt"><SPAN
class=212011020-11052004><FONT
color=#000000>Mechanical</FONT></SPAN></SPAN></DIV>
<DIV><SPAN
style="FONT-SIZE: 10pt; COLOR: gray; FONT-FAMILY: Arial; mso-bidi-font-size: 12.0pt"><FONT
color=#000080><STRONG>HARGIS ENGINEERS</STRONG></FONT></DIV>
<P class=MsoNormal style="MARGIN: 0in 0in 0pt"><SPAN
style="FONT-SIZE: 10pt; COLOR: gray; FONT-FAMILY: Arial; mso-bidi-font-size: 12.0pt"><FONT
color=#515151>600 Stewart Street</FONT></SPAN></P>
<P class=MsoNormal style="MARGIN: 0in 0in 0pt"><SPAN
style="FONT-SIZE: 10pt; COLOR: gray; FONT-FAMILY: Arial; mso-bidi-font-size: 12.0pt"><FONT
color=#515151>Suite 1000</FONT></SPAN></P>
<P class=MsoNormal style="MARGIN: 0in 0in 0pt"><SPAN
style="FONT-SIZE: 10pt; COLOR: gray; FONT-FAMILY: Arial; mso-bidi-font-size: 12.0pt"><FONT
color=#515151>Seattle, WA 98101<o:p></o:p></FONT></SPAN></P>
<P class=MsoNormal style="MARGIN: 0in 0in 0pt"><SPAN
style="FONT-SIZE: 10pt; COLOR: gray; FONT-FAMILY: Arial; mso-bidi-font-size: 12.0pt"><FONT
color=#515151>www.hargis.biz<o:p></o:p></FONT></SPAN></P>
<P class=MsoNormal style="MARGIN: 0in 0in 0pt"><SPAN
style="FONT-SIZE: 10pt; COLOR: gray; FONT-FAMILY: Arial; mso-bidi-font-size: 12.0pt"><FONT
color=#515151> <o:p></o:p></FONT></SPAN></P>
<P class=MsoNormal style="MARGIN: 0in 0in 0pt"><B><SPAN
style="FONT-SIZE: 10pt; COLOR: gray; FONT-FAMILY: Arial; mso-bidi-font-size: 12.0pt">d
|</SPAN></B><SPAN
style="FONT-SIZE: 10pt; COLOR: gray; FONT-FAMILY: Arial; mso-bidi-font-size: 12.0pt">
206.436.04<SPAN class=212011020-11052004>0</SPAN>0<SPAN
style="mso-spacerun: yes"> </SPAN><B>c | </B>206.<SPAN
class=212011020-11052004>228.8707</SPAN></SPAN></P>
<P class=MsoNormal style="MARGIN: 0in 0in 0pt"><SPAN
style="FONT-SIZE: 10pt; COLOR: gray; FONT-FAMILY: Arial; mso-bidi-font-size: 12.0pt"><SPAN
class=212011020-11052004></SPAN></SPAN><FONT color=#515151><B><SPAN
style="FONT-SIZE: 10pt; COLOR: gray; FONT-FAMILY: Arial; mso-bidi-font-size: 12.0pt; mso-fareast-font-family: 'Times New Roman'; mso-ansi-language: EN-US; mso-fareast-language: EN-US; mso-bidi-language: AR-SA">o
|</SPAN></B><SPAN
style="FONT-SIZE: 10pt; COLOR: gray; FONT-FAMILY: Arial; mso-bidi-font-size: 12.0pt; mso-fareast-font-family: 'Times New Roman'; mso-ansi-language: EN-US; mso-fareast-language: EN-US; mso-bidi-language: AR-SA">
206.448.3376<SPAN style="mso-spacerun: yes"> </SPAN><B>f <SPAN
style="mso-spacerun: yes"> </SPAN>|</B>
206.448.4450</SPAN></FONT></P></SPAN></SPAN>
<DIV> </DIV></DIV>
<DIV> </DIV><BR>
<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>Fred Porter<BR><B>Sent:</B>
Friday, October 12, 2007 3:31 PM<BR><B>To:</B>
BLDG-SIM@gard.com<BR><B>Subject:</B> [BLDG-SIM] Heat Pump
COP<BR></FONT><BR></DIV>
<DIV></DIV>
<DIV class=Section1>
<P class=MsoNormal><FONT face=Arial color=navy size=2><SPAN
style="FONT-SIZE: 10pt; COLOR: navy; FONT-FAMILY: Arial">The method cited below
only gives correct results if the heat pump fan operates intermittently on a
call for heat/cool, and if the fan as installed runs at its ARI-tested power.
Otherwise this method greatly under-estimates fan energy, at least for constant
speed fans. This is mentioned specifically for App G/ECB models either in the
Standard itself or in the UM.<o:p></o:p></SPAN></FONT> </P>
<P class=MsoNormal><FONT face=Arial color=navy size=2><SPAN
style="FONT-SIZE: 10pt; COLOR: navy; FONT-FAMILY: Arial"><o:p> </o:p></SPAN></FONT>
</P>
<DIV>
<P class=MsoNormal><FONT face=Arial color=navy size=2><SPAN
style="FONT-SIZE: 10pt; COLOR: navy; FONT-FAMILY: Arial">--</SPAN></FONT><FONT
color=navy><SPAN style="COLOR: navy"><o:p></o:p></SPAN></FONT> </P>
<P class=MsoNormal><FONT face=Arial color=navy size=2><SPAN
style="FONT-SIZE: 10pt; COLOR: navy; FONT-FAMILY: Arial">Fred
<o:p></o:p></SPAN></FONT></P>
<P class=MsoNormal><FONT face="Times New Roman" color=navy size=3><SPAN
style="FONT-SIZE: 12pt; COLOR: navy"> </SPAN></FONT><o:p></o:p> </P></DIV>
<DIV>
<DIV class=MsoNormal style="TEXT-ALIGN: center" align=center><FONT
face="Times New Roman" size=3><SPAN style="FONT-SIZE: 12pt">
<HR tabIndex=-1 align=center width="100%" SIZE=2>
</SPAN></FONT></DIV>
<P class=MsoNormal><B><FONT face=Tahoma size=2><SPAN
style="FONT-WEIGHT: bold; FONT-SIZE: 10pt; FONT-FAMILY: Tahoma">From:</SPAN></FONT></B><FONT
face=Tahoma size=2><SPAN style="FONT-SIZE: 10pt; FONT-FAMILY: Tahoma"> Brandon
Nichols [mailto:BrandonN@Hargis.biz] <BR><B><SPAN
style="FONT-WEIGHT: bold">Sent:</SPAN></B> Friday, October 12, 2007 3:47
PM<BR><B><SPAN style="FONT-WEIGHT: bold">To:</SPAN></B> Fred Porter;
BLDG-SIM@gard.com<BR><B><SPAN style="FONT-WEIGHT: bold">Subject:</SPAN></B> RE:
[BLDG-SIM] Heat Pump COP</SPAN></FONT><o:p></o:p> </P></DIV>
<P class=MsoNormal><FONT face="Times New Roman" size=3><SPAN
style="FONT-SIZE: 12pt"><o:p> </o:p></SPAN></FONT> </P>
<H5 style="MARGIN: 0in 0in 0pt"><B><FONT face="Times New Roman" size=2><SPAN
style="FONT-SIZE: 10pt"> <o:p></o:p></SPAN></FONT></B> </H5>
<DIV>
<P class=MsoNormal><FONT face="Times New Roman" color=blue size=3><SPAN
style="FONT-SIZE: 12pt; COLOR: blue">Good point, John -- but there may
be an arguably easier way to not double-count fan energy...following is a
reprint from the DOE2 documentation:</SPAN></FONT><o:p></o:p> </P></DIV>
<H5 style="MARGIN: 0in 0in 0pt"><B><FONT face="Times New Roman" size=2><SPAN
style="FONT-SIZE: 10pt"> <o:p></o:p></SPAN></FONT></B> </H5>
<H5 style="MARGIN: 0in 0in 0pt"><B><FONT face="Times New Roman" size=2><SPAN
style="FONT-SIZE: 10pt">COOLING-EIR<o:p></o:p></SPAN></FONT></B> </H5>
<P class=MsoBodyText style="MARGIN: 0in 0in 0pt"><FONT face="Times New Roman"
size=3><SPAN style="FONT-SIZE: 12pt">The Electric Input Ratio (EIR), or
1/(Coefficient of Performance), for the cooling unit at ARI rated conditions.
The program defines EIR to be the ratio of the electric energy input to
the rated capacity, when both the energy input and rated capacity are expressed
in the same units. This EIR is at ARI rated conditions, i.e., without correction
for different temperature or part load. <o:p></o:p></SPAN></FONT></P>
<P class=MsoBodyText style="MARGIN: 0in 0in 0pt"><FONT face="Times New Roman"
size=3><SPAN style="FONT-SIZE: 12pt">Note: If you include fan electric
energy consumption in your value of COOLING-EIR, then you should <FONT
color=red><SPAN style="COLOR: red">set</SPAN></FONT> <FONT color=red><SPAN
style="COLOR: red">SUPPLY-KW/FLOW to zero (and SUPPLY-STATIC, SUPPLY-EFF and
SUPPLY-DELTA-T should be omitted). Otherwise, the supply fan electrical energy
will be double counted.</SPAN></FONT> For commercial systems the default value
of COOLING-EIR includes compressor and outdoor fan energy, but not indoor fan
energy. <o:p></o:p></SPAN></FONT></P>
<DIV>
<H5><B><FONT face="Times New Roman" size=2><SPAN
style="FONT-SIZE: 10pt">HEATING-EIR<o:p></o:p></SPAN></FONT></B> </H5>
<P class=MsoBodyText><FONT face="Times New Roman" size=3><SPAN
style="FONT-SIZE: 12pt">Electric Input Ratio, or 1/(heating Coefficient of
Performance), for the heat pump. This EIR is at ARI rated conditions, i.e.,
without corrections for temperature or part load. The <STRONG><B><FONT
face="Times New Roman" color=red><SPAN
style="COLOR: red">program-calculated</SPAN></FONT></B></STRONG> HEATING-EIR
does not include fan power and heat. This keyword is appropriate only to HP,
RESYS, and PTAC systems. <o:p></o:p></SPAN></FONT></P></DIV>
<DIV>
<P class=MsoNormal><FONT face="Times New Roman" color=blue size=3><SPAN
style="FONT-SIZE: 12pt; COLOR: blue">Mysteriously, the HEATING-EIR documentation
makes no mention of the fan energy double counting issue. But if you're
consistent and use 3.41 divided by the manufacturers published EER for the
cooling EIR, the inverse of the published COP for the heating EIR,
and zero-out the supply fan energy as described in the
documentaion ... then Bob's your uncle, right?
</SPAN></FONT><o:p></o:p></P></DIV>
<DIV>
<P class=MsoNormal><FONT face="Times New Roman" color=blue size=3><SPAN
style="FONT-SIZE: 12pt; COLOR: blue">FWIW, that's the way we do
it...</SPAN></FONT><o:p></o:p> </P></DIV>
<DIV>
<P class=MsoNormal><FONT face="Times New Roman" size=3><SPAN
style="FONT-SIZE: 12pt"> <o:p></o:p></SPAN></FONT> </P></DIV>
<DIV>
<P class=MsoNormal><FONT face=Arial color=black size=2><SPAN
style="FONT-SIZE: 10pt; COLOR: black; FONT-FAMILY: Arial">Brandon Nichols,
PE, LEED</SPAN></FONT><SUP><FONT face=Arial color=black size=1><SPAN
style="FONT-SIZE: 8pt; COLOR: black; FONT-FAMILY: Arial">®</SPAN></FONT></SUP><FONT
face=Arial color=black size=2><SPAN
style="FONT-SIZE: 10pt; COLOR: black; FONT-FAMILY: Arial"> AP</SPAN></FONT><FONT
face=Arial size=2><SPAN
style="FONT-SIZE: 10pt; FONT-FAMILY: Arial"><o:p></o:p></SPAN></FONT> </P></DIV>
<DIV>
<P class=MsoNormal><FONT face=Arial color=black size=2><SPAN
style="FONT-SIZE: 10pt; COLOR: black; FONT-FAMILY: Arial">Mechanical</SPAN></FONT><FONT
face=Arial size=2><SPAN
style="FONT-SIZE: 10pt; FONT-FAMILY: Arial"><o:p></o:p></SPAN></FONT> </P></DIV>
<DIV>
<P class=MsoNormal><STRONG><B><FONT face=Arial color=navy size=2><SPAN
style="FONT-SIZE: 10pt; COLOR: navy; FONT-FAMILY: Arial">HARGIS
ENGINEERS</SPAN></FONT></B></STRONG><FONT face=Arial color=gray size=2><SPAN
style="FONT-SIZE: 10pt; COLOR: gray; FONT-FAMILY: Arial"><o:p></o:p></SPAN></FONT>
</P></DIV>
<P class=MsoNormal><st1:Street w:st="on"><st1:address w:st="on"><FONT face=Arial
color=#515151 size=2><SPAN
style="FONT-SIZE: 10pt; COLOR: #515151; FONT-FAMILY: Arial">600 Stewart
Street</SPAN></FONT></st1:address></st1:Street><FONT color=gray><SPAN
style="COLOR: gray"><o:p></o:p></SPAN></FONT> </P>
<P class=MsoNormal><st1:address w:st="on"><st1:Street w:st="on"><FONT face=Arial
color=#515151 size=2><SPAN
style="FONT-SIZE: 10pt; COLOR: #515151; FONT-FAMILY: Arial">Suite</SPAN></FONT></st1:Street><FONT
face=Arial color=#515151 size=2><SPAN
style="FONT-SIZE: 10pt; COLOR: #515151; FONT-FAMILY: Arial">
1000</SPAN></FONT></st1:address><FONT color=gray><SPAN
style="COLOR: gray"><o:p></o:p></SPAN></FONT> </P>
<P class=MsoNormal><st1:place w:st="on"><st1:City w:st="on"><FONT face=Arial
color=#515151 size=2><SPAN
style="FONT-SIZE: 10pt; COLOR: #515151; FONT-FAMILY: Arial">Seattle</SPAN></FONT></st1:City><FONT
face=Arial color=#515151 size=2><SPAN
style="FONT-SIZE: 10pt; COLOR: #515151; FONT-FAMILY: Arial">, <st1:State
w:st="on">WA</st1:State> <st1:PostalCode
w:st="on">98101</st1:PostalCode></SPAN></FONT></st1:place><FONT face=Arial
color=#515151 size=2><SPAN
style="FONT-SIZE: 10pt; COLOR: #515151; FONT-FAMILY: Arial"><o:p></o:p></SPAN></FONT>
</P>
<P class=MsoNormal><FONT face=Arial color=#515151 size=2><SPAN
style="FONT-SIZE: 10pt; COLOR: #515151; FONT-FAMILY: Arial">www.hargis.biz<o:p></o:p></SPAN></FONT>
</P>
<P class=MsoNormal><FONT face=Arial color=#515151 size=2><SPAN
style="FONT-SIZE: 10pt; COLOR: #515151; FONT-FAMILY: Arial"> <o:p></o:p></SPAN></FONT>
</P>
<P class=MsoNormal><B><FONT face=Arial color=gray size=2><SPAN
style="FONT-WEIGHT: bold; FONT-SIZE: 10pt; COLOR: gray; FONT-FAMILY: Arial">d
|</SPAN></FONT></B><FONT face=Arial color=gray size=2><SPAN
style="FONT-SIZE: 10pt; COLOR: gray; FONT-FAMILY: Arial"> 206.436.0400
<B><SPAN style="FONT-WEIGHT: bold">c |
</SPAN></B>206.228.8707</SPAN></FONT><FONT color=gray><SPAN
style="COLOR: gray"><o:p></o:p></SPAN></FONT> </P>
<P class=MsoNormal><B><FONT face=Arial color=gray size=2><SPAN
style="FONT-WEIGHT: bold; FONT-SIZE: 10pt; COLOR: gray; FONT-FAMILY: Arial">o
|</SPAN></FONT></B><FONT face=Arial color=gray size=2><SPAN
style="FONT-SIZE: 10pt; COLOR: gray; FONT-FAMILY: Arial"> 206.448.3376
<B><SPAN style="FONT-WEIGHT: bold">f |</SPAN></B>
206.448.4450</SPAN></FONT><FONT color=gray><SPAN
style="COLOR: gray"><o:p></o:p></SPAN></FONT> </P>
<DIV>
<P class=MsoNormal><FONT face="Times New Roman" size=3><SPAN
style="FONT-SIZE: 12pt"> <o:p></o:p></SPAN></FONT> </P></DIV>
<DIV>
<P class=MsoNormal><FONT face="Times New Roman" size=3><SPAN
style="FONT-SIZE: 12pt"> <o:p></o:p></SPAN></FONT> </P></DIV>
<P class=MsoNormal><FONT face="Times New Roman" size=3><SPAN
style="FONT-SIZE: 12pt"><o:p> </o:p></SPAN></FONT> </P>
<DIV class=MsoNormal style="TEXT-ALIGN: center" align=center><FONT
face="Times New Roman" size=3><SPAN style="FONT-SIZE: 12pt">
<HR tabIndex=-1 align=center width="100%" SIZE=2>
</SPAN></FONT></DIV>
<P class=MsoNormal style="MARGIN-BOTTOM: 12pt"><B><FONT face=Tahoma size=2><SPAN
style="FONT-WEIGHT: bold; FONT-SIZE: 10pt; FONT-FAMILY: Tahoma">From:</SPAN></FONT></B><FONT
face=Tahoma size=2><SPAN style="FONT-SIZE: 10pt; FONT-FAMILY: Tahoma">
BLDG-SIM@gard.com [mailto:BLDG-SIM@gard.com] <B><SPAN
style="FONT-WEIGHT: bold">On Behalf Of </SPAN></B>Fred Porter<BR><B><SPAN
style="FONT-WEIGHT: bold">Sent:</SPAN></B> Friday, October 12, 2007 10:23
AM<BR><B><SPAN style="FONT-WEIGHT: bold">To:</SPAN></B>
BLDG-SIM@gard.com<BR><B><SPAN style="FONT-WEIGHT: bold">Subject:</SPAN></B>
[BLDG-SIM] Heat Pump COP</SPAN></FONT><o:p></o:p> </P>
<P class=MsoNormal style="MARGIN-BOTTOM: 12pt"><FONT face="Times New Roman"
size=3><SPAN style="FONT-SIZE: 12pt">Yes and no. The energy is "removed," but
the COP improves because the fan heat had a COP of 1.0, and is included in the
rated gross kW in and Btuh out. I think the T24 ACM may have a "method" or
formula.<BR><BR><o:p></o:p></SPAN></FONT></P>
<DIV class=MsoNormal style="TEXT-ALIGN: center" align=center><FONT
face="Times New Roman" size=3><SPAN style="FONT-SIZE: 12pt">
<HR align=center width="100%" SIZE=2>
</SPAN></FONT></DIV>
<P class=MsoNormal style="MARGIN-BOTTOM: 12pt"><B><FONT face="Times New Roman"
size=3><SPAN style="FONT-WEIGHT: bold; FONT-SIZE: 12pt">From:
</SPAN></FONT></B>Aulbach, John<BR><B><SPAN style="FONT-WEIGHT: bold">Sent:
</SPAN></B>Thu, 10/11/2007 3:25pm<BR><B><SPAN style="FONT-WEIGHT: bold">To:
</SPAN></B>BLDG-SIM@gard.com<BR><B><SPAN style="FONT-WEIGHT: bold">Subject:
</SPAN></B>[BLDG-SIM] Heat Pump COP<o:p></o:p> </P>
<P class=MsoNormal><FONT face=Arial color=blue size=2><SPAN
style="FONT-SIZE: 10pt; COLOR: blue; FONT-FAMILY: Arial">Folks:</SPAN></FONT><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>
<P class=MsoNormal><FONT face=Arial color=blue size=2><SPAN
style="FONT-SIZE: 10pt; COLOR: blue; FONT-FAMILY: Arial">In eQuest, the Energy
Input Ratio (EIR) can be derived from EER or COP given for a unit or from a
Standard. To correctly model such a unit, one must subtract the fan energy for
the unit to obtain the EER (EIR) of the compressor only. This improves the input
from, say, a COP of 12.3 to 15.</SPAN></FONT><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>
<P class=MsoNormal><FONT face=Arial color=blue size=2><SPAN
style="FONT-SIZE: 10pt; COLOR: blue; FONT-FAMILY: Arial">What about in the case
of the heat pump heating COP? Must one subtract out the fan energy here as well,
thus "worsening" the COP for the heating side?</SPAN></FONT><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>
<P class=MsoNormal><FONT face=Arial color=blue size=2><SPAN
style="FONT-SIZE: 10pt; COLOR: blue; FONT-FAMILY: Arial">I cannot find anything
written on this subject.</SPAN></FONT><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>
<P class=MsoNormal><FONT face=Arial color=blue size=2><SPAN
style="FONT-SIZE: 10pt; COLOR: blue; FONT-FAMILY: Arial">Thanks.</SPAN></FONT><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>
<P class=MsoNormal><FONT face="Times New Roman" color=blue size=3><SPAN
style="FONT-SIZE: 12pt; COLOR: blue">John R. Aulbach, PE,
CEM</SPAN></FONT><o:p></o:p> </P>
<P class=MsoNormal><EM><I><FONT face=Arial size=2><SPAN
style="FONT-SIZE: 10pt; FONT-FAMILY: Arial">Project
Manager</SPAN></FONT></I></EM><o:p></o:p> </P>
<P class=MsoNormal><FONT face=Arial color=blue size=2><SPAN
style="FONT-SIZE: 10pt; COLOR: blue; FONT-FAMILY: Arial">Nexant,
Inc</SPAN></FONT><FONT face=Arial size=2><SPAN
style="FONT-SIZE: 10pt; FONT-FAMILY: Arial">.</SPAN></FONT><o:p></o:p> </P>
<P class=MsoNormal><FONT face=Arial size=2><SPAN
style="FONT-SIZE: 10pt; FONT-FAMILY: Arial">100 North Barranca, <st1:address
w:st="on"><st1:Street w:st="on">Suite</st1:Street>
820</st1:address></SPAN></FONT><o:p></o:p> </P>
<P class=MsoNormal><st1:place w:st="on"><st1:City w:st="on"><FONT face=Arial
size=2><SPAN style="FONT-SIZE: 10pt; FONT-FAMILY: Arial">West
Covina</SPAN></FONT></st1:City><FONT face=Arial size=2><SPAN
style="FONT-SIZE: 10pt; FONT-FAMILY: Arial">, <st1:State
w:st="on">CA</st1:State> <st1:PostalCode w:st="on">91791</st1:PostalCode>
<st1:country-region
w:st="on">USA</st1:country-region></SPAN></FONT></st1:place><o:p></o:p> </P>
<P class=MsoNormal><FONT face=Arial size=2><SPAN
style="FONT-SIZE: 10pt; FONT-FAMILY: Arial">Phone:
626-430-9054</SPAN></FONT><o:p></o:p> </P>
<P class=MsoNormal><FONT face=Arial size=2><SPAN
style="FONT-SIZE: 10pt; FONT-FAMILY: Arial">Fax:
626-430-9060</SPAN></FONT><o:p></o:p> </P>
<P class=MsoNormal><FONT face=Arial size=2><SPAN
style="FONT-SIZE: 10pt; FONT-FAMILY: Arial">email: <A
title=mailto:jaulbach@nexant.com
href="mailto:jaulbach@nexant.com">jaulbach@nexant.com</A></SPAN></FONT><o:p></o:p>
</P>
<DIV>
<P class=MsoNormal><FONT face="Times New Roman" size=3><SPAN
style="FONT-SIZE: 12pt"> <o:p></o:p></SPAN></FONT> </P></DIV>
<DIV><PRE><FONT face="Courier New" size=2><SPAN style="FONT-SIZE: 10pt"> <o:p></o:p></SPAN></FONT>
</PRE></DIV><PRE><FONT face="Courier New" size=2><SPAN style="FONT-SIZE: 10pt">h@nexant.comYou received this e-mail because you are subscribed<BR>
to the BLDG-SIM@GARD.COM mailing list. To unsubscribe<BR>
from this mailing list send a blank message to<BR>
BLDG-SIM-UNSUBSCRIBE@GARD.COM<o:p></o:p></SPAN></FONT>
</PRE><PRE><FONT face="Courier New" size=2><SPAN style="FONT-SIZE: 10pt"><o:p> </o:p></SPAN></FONT>
</PRE><PRE><FONT face="Courier New" size=2><SPAN style="FONT-SIZE: 10pt"><o:p> </o:p></SPAN></FONT>
</PRE><PRE><FONT face="Courier New" size=2><SPAN style="FONT-SIZE: 10pt">======================================================<o:p></o:p></SPAN></FONT>
</PRE><PRE><FONT face="Courier New" size=2><SPAN style="FONT-SIZE: 10pt">You received this e-mail because you are subscribed <o:p></o:p></SPAN></FONT>
</PRE><PRE><FONT face="Courier New" size=2><SPAN style="FONT-SIZE: 10pt">to the BLDG-SIM@GARD.COM mailing list. To unsubscribe <o:p></o:p></SPAN></FONT>
</PRE><PRE><FONT face="Courier New" size=2><SPAN style="FONT-SIZE: 10pt">from this mailing list send a blank message to <o:p></o:p></SPAN></FONT>
</PRE><PRE><FONT face="Courier New" size=2><SPAN style="FONT-SIZE: 10pt">BLDG-SIM-UNSUBSCRIBE@GARD.COM<o:p></o:p></SPAN></FONT>
</PRE></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>
<P></P><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>