<!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"><HEAD>
<META http-equiv=Content-Type content="text/html; charset=us-ascii">
<META content="MSHTML 6.00.6000.16414" name=GENERATOR>
<STYLE>@font-face {
font-family: Lucida Sans Unicode;
}
@page Section1 {size: 8.5in 11.0in; margin: 1.0in 1.25in 1.0in 1.25in; }
P.MsoNormal {
FONT-SIZE: 10pt; MARGIN: 0in 0in 0pt; FONT-FAMILY: "Lucida Sans Unicode"
}
LI.MsoNormal {
FONT-SIZE: 10pt; MARGIN: 0in 0in 0pt; FONT-FAMILY: "Lucida Sans Unicode"
}
DIV.MsoNormal {
FONT-SIZE: 10pt; MARGIN: 0in 0in 0pt; FONT-FAMILY: "Lucida Sans Unicode"
}
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
}
ADDRESS {
FONT-SIZE: 12pt; MARGIN: 0in 0in 0pt; FONT-STYLE: italic; FONT-FAMILY: "Times New Roman"
}
SPAN.EmailStyle17 {
FONT-WEIGHT: normal; COLOR: navy; FONT-STYLE: normal; FONT-FAMILY: Arial; TEXT-DECORATION: none; mso-style-type: personal-compose
}
DIV.Section1 {
page: Section1
}
</STYLE>
<!--[if gte mso 9]><xml>
<o:shapedefaults v:ext="edit" spidmax="1026" />
</xml><![endif]--><!--[if gte mso 9]><xml>
<o:shapelayout v:ext="edit">
<o:idmap v:ext="edit" data="1" />
</o:shapelayout></xml><![endif]--></HEAD>
<BODY lang=EN-US vLink=purple link=blue>
<DIV><FONT face=Arial color=#0000ff size=2><SPAN class=858470519-23022007>Jeff,
the lake/well model is based on ground water circulating through the
chiller heat exchanger. Therefore the main parameter is the water
temperature. It sounds like you instead have a ground loop heat
exchanger, where the water is circulated through a closed loop pipe located in
the ground. I don't believe you are able to use the heat pump chiller
type for that method of heat rejection.</SPAN></FONT></DIV>
<DIV><FONT face=Arial color=#0000ff size=2><SPAN
class=858470519-23022007></SPAN></FONT> </DIV>
<DIV><FONT face=Arial color=#0000ff size=2><SPAN class=858470519-23022007>One
workaround might be that if you know what the water temperatures will be in the
GLHE you could input those monthly temperatures to the lake/well model and use
your model as you currently have it configured.</SPAN></FONT></DIV>
<DIV><FONT face=Arial color=#0000ff size=2><SPAN
class=858470519-23022007></SPAN></FONT> </DIV>
<DIV><FONT face=Arial color=#0000ff size=2><SPAN class=858470519-23022007>You
could make a separate eQuest model using water-to-air heat pumps (make sure to
have the same outside air loads, compressor efficiencies etc.) using
the GLHE heat rejection with the details of your actual/proposed well
field to get some idea what the water temperatures should be, then plug those
temperatures into your WTWHP model using the lake/well heat rejection.
Also you may want to simulate it with a high/low range of monthly water
temperatures to see how sensitive your results are to this
approximation.</SPAN></FONT></DIV>
<DIV><FONT face=Arial color=#0000ff size=2><SPAN
class=858470519-23022007></SPAN></FONT> </DIV>
<DIV><FONT face=Arial color=#0000ff size=2><SPAN class=858470519-23022007>You
have to judge whether this will provide the accuracy you need for your
project. Obviously you'll have to make adjustments for the pumping
energy to reflect your intentions.</SPAN></FONT></DIV>
<DIV><FONT face=Arial color=#0000ff size=2><SPAN
class=858470519-23022007></SPAN></FONT> </DIV>
<DIV><FONT face=Arial color=#0000ff size=2><SPAN class=858470519-23022007>Hope
this helps!</SPAN></FONT></DIV>
<DIV><FONT face=Arial color=#0000ff size=2><SPAN
class=858470519-23022007></SPAN></FONT> </DIV>
<DIV><FONT face=Arial color=#0000ff size=2><SPAN
class=858470519-23022007>David</SPAN></FONT></DIV>
<DIV><FONT face=Arial color=#0000ff size=2><SPAN
class=858470519-23022007></SPAN></FONT><FONT face=Arial color=#0000ff
size=2></FONT><FONT face=Arial color=#0000ff size=2><SPAN
class=858470519-23022007></SPAN></FONT><FONT face=Arial color=#0000ff
size=2><SPAN class=858470519-23022007></SPAN></FONT><FONT face=Arial
color=#0000ff size=2><SPAN
class=858470519-23022007></SPAN></FONT> </DIV><BR>
<BLOCKQUOTE dir=ltr
style="PADDING-LEFT: 5px; MARGIN-LEFT: 5px; BORDER-LEFT: #0000ff 2px solid; MARGIN-RIGHT: 0px">
<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>Jeff Staller<BR><B>Sent:</B>
Friday, February 23, 2007 12:57 PM<BR><B>To:</B>
BLDG-SIM@gard.com<BR><B>Subject:</B> [BLDG-SIM] Water-to-Water Heat Pump
Chillers and GLHE's<BR></FONT><BR></DIV>
<DIV></DIV>
<DIV class=Section1>
<P class=MsoNormal><FONT face="Times New Roman" size=2><SPAN
style="FONT-SIZE: 10pt; FONT-FAMILY: 'Times New Roman'"><o:p> </o:p></SPAN></FONT></P>
<P class=MsoNormal><FONT face="Times New Roman" size=2><SPAN
style="FONT-SIZE: 10pt; FONT-FAMILY: 'Times New Roman'">In eQuest I am
attempting to model a proposed system that utilizes a ‘well-water-to-water
heat pump’ type chiller that will be attached to a vertical well ground loop
heat exchanger. The chillers are modular and cycle on and off to meet demand,
so they operate at a constant efficiency. They will be providing HW and
CHW to 2-pipe fan coil units. The DOE2.2 documentation indicates this
chiller type is Heat-Pump and that this chiller type can only be attached to
lake/well water loop. By selecting the lake/well water loop, I am unable
to define the vertical well characteristics, i.e well depth, configuration,
etc. Does anyone know of a way to attach the Heat-Pump type chiller to a
vertical well system? If not, is there a method to better describe the
capacity of the lake/well loop? And finally, does anyone have experience
modeling this system type and can provide any
insight?<o:p></o:p></SPAN></FONT></P>
<P class=MsoNormal><FONT face="Times New Roman" size=2><SPAN
style="FONT-SIZE: 10pt; FONT-FAMILY: 'Times New Roman'"><o:p> </o:p></SPAN></FONT></P>
<P class=MsoNormal><FONT face="Times New Roman" size=2><SPAN
style="FONT-SIZE: 10pt; FONT-FAMILY: 'Times New Roman'">Thanks,<o:p></o:p></SPAN></FONT></P>
<P class=MsoNormal><FONT face="Times New Roman" size=2><SPAN
style="FONT-SIZE: 10pt; FONT-FAMILY: 'Times New Roman'"><o:p> </o:p></SPAN></FONT></P>
<P class=MsoNormal><FONT face="Times New Roman" size=2><SPAN
style="FONT-SIZE: 10pt; FONT-FAMILY: 'Times New Roman'">Jeff<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>
<P class=MsoNormal><FONT face=Arial color=navy size=2><SPAN
style="FONT-SIZE: 10pt; COLOR: navy; FONT-FAMILY: Arial">Jeff Staller,
CEM</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">CTG
Energetics</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">949-428-6293<o:p></o:p></SPAN></FONT></P>
<P class=MsoNormal><FONT face="Lucida Sans Unicode" color=navy size=2><SPAN
style="FONT-SIZE: 10pt; COLOR: navy"> </SPAN></FONT><FONT
face="Times New Roman" color=navy size=3><SPAN
style="FONT-SIZE: 12pt; COLOR: navy; FONT-FAMILY: 'Times New Roman'"><o:p></o:p></SPAN></FONT></P>
<P class=MsoNormal><FONT face="Lucida Sans Unicode" color=navy size=2><SPAN
style="FONT-SIZE: 10pt; COLOR: navy"> </SPAN></FONT><o:p></o:p></P>
<P class=MsoNormal><FONT face="Lucida Sans Unicode" size=2><SPAN
style="FONT-SIZE: 10pt"><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></BLOCKQUOTE><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>