<html xmlns:v="urn:schemas-microsoft-com:vml" xmlns:o="urn:schemas-microsoft-com:office:office" xmlns:w="urn:schemas-microsoft-com:office:word" xmlns:m="http://schemas.microsoft.com/office/2004/12/omml" xmlns="http://www.w3.org/TR/REC-html40">
<head>
<meta http-equiv=Content-Type content="text/html; charset=us-ascii">
<meta name=Generator content="Microsoft Word 12 (filtered medium)">
<title>Space Cooling Energy Consumption with GSHP</title>
<style>
<!--
/* Font Definitions */
@font-face
{font-family:Calibri;
panose-1:2 15 5 2 2 2 4 3 2 4;}
@font-face
{font-family:Tahoma;
panose-1:2 11 6 4 3 5 4 4 2 4;}
@font-face
{font-family:Garamond;
panose-1:2 2 4 4 3 3 1 1 8 3;}
/* Style Definitions */
p.MsoNormal, li.MsoNormal, div.MsoNormal
{margin:0in;
margin-bottom:.0001pt;
font-size:12.0pt;
font-family:"Times New Roman","serif";}
a:link, span.MsoHyperlink
{mso-style-priority:99;
color:blue;
text-decoration:underline;}
a:visited, span.MsoHyperlinkFollowed
{mso-style-priority:99;
color:purple;
text-decoration:underline;}
p
{mso-style-priority:99;
mso-margin-top-alt:auto;
margin-right:0in;
mso-margin-bottom-alt:auto;
margin-left:0in;
font-size:12.0pt;
font-family:"Times New Roman","serif";}
span.EmailStyle18
{mso-style-type:personal-reply;
color:black;}
.MsoChpDefault
{mso-style-type:export-only;
font-size:10.0pt;}
@page Section1
{size:8.5in 11.0in;
margin:1.0in 1.0in 1.0in 1.0in;}
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 link=blue vlink=purple>
<div class=Section1>
<p class=MsoNormal><span style='color:black'>As far as cooling energy goes,
what are your design case cooling EIR with the geothermal system, and your
baseline case cooling EIR for the air-to-air selections?<o:p></o:p></span></p>
<p class=MsoNormal><span style='color:black'><o:p> </o:p></span></p>
<p class=MsoNormal><span style='color:black'>Is the heat pump fan power parameter
the same in both cases, and modeled separately from the cooling energy?<o:p></o:p></span></p>
<p class=MsoNormal><span style='color:black'><o:p> </o:p></span></p>
<p class=MsoNormal><span style='color:black'>David<o:p></o:p></span></p>
<p class=MsoNormal><span style='color:black'><o:p> </o:p></span></p>
<p class=MsoNormal><span style='color:black'><o:p> </o:p></span></p>
<div style='border:none;border-left:solid blue 1.5pt;padding:0in 0in 0in 4.0pt'>
<div>
<div style='border:none;border-top:solid #B5C4DF 1.0pt;padding:3.0pt 0in 0in 0in'>
<p class=MsoNormal><b><span style='font-size:10.0pt;font-family:"Tahoma","sans-serif"'>From:</span></b><span
style='font-size:10.0pt;font-family:"Tahoma","sans-serif"'>
bldg-sim-bounces@lists.onebuilding.org [mailto:bldg-sim-bounces@lists.onebuilding.org]
<b>On Behalf Of </b>Tom Butler<br>
<b>Sent:</b> Tuesday, May 13, 2008 4:53 PM<br>
<b>To:</b> bldg-sim@lists.onebuilding.org<br>
<b>Subject:</b> [Bldg-sim] Space Cooling Energy Consumption with GSHP<o:p></o:p></span></p>
</div>
</div>
<p class=MsoNormal><o:p> </o:p></p>
<p><span style='font-size:10.0pt;font-family:"Arial","sans-serif"'>I am
modeling an apartment style dormitory for a project in Atlanta, GA. Each of the
45 units is served by its own heat pump, along with a few zones for public
areas. For an energy efficiency grant application I have compared the designed
system, a ground source heat pump, with an air source heat pump prescribed by
90.1. Other than the systems, the models are identical. </span><o:p></o:p></p>
<p><span style='font-size:10.0pt;font-family:"Arial","sans-serif"'>The energy
use for space cooling is significantly higher for the GSHP system (24,000 kWh
vs. 17,000 kWh). Because the power required to run pumps offsets the savings in
heating energy, this destroys the rationale for spending the extra money on the
Ground Source Heat Pump, as well as our chances of receiving the grant.</span><o:p></o:p></p>
<p><span style='font-size:10.0pt;font-family:"Arial","sans-serif"'>Has any one
encountered this issue? </span><o:p></o:p></p>
<p class=MsoNormal><o:p> </o:p></p>
<p><span style='font-size:10.0pt;font-family:"Arial","sans-serif"'>Thanks</span>
<o:p></o:p></p>
<p><span style='font-size:10.0pt;font-family:"Arial","sans-serif"'>tb </span><o:p></o:p></p>
<p><b><span style='font-family:"Garamond","serif";color:black'>Thomas Butler,</span></b>
<span style='font-family:"Garamond","serif";color:black'>LEED AP</span><b> </b><br>
<span style='font-family:"Garamond","serif";color:black'>Direct Phone 404-253-1435
| Direct Fax 404-253-1335</span> <o:p></o:p></p>
<p><b><span style='font-family:"Garamond","serif";color:maroon'>L</span></b><b><span
style='font-size:10.0pt;font-family:"Garamond","serif";color:maroon'>ORD</span></b><b><span
style='font-family:"Garamond","serif";color:maroon'>, A</span></b><b><span
style='font-size:10.0pt;font-family:"Garamond","serif";color:maroon'>ECK</span></b><b><span
style='font-family:"Garamond","serif";color:maroon'> & S</span></b><b><span
style='font-size:10.0pt;font-family:"Garamond","serif";color:maroon'>ARGENT</span></b><b><span
style='font-family:"Garamond","serif";color:maroon'> A</span></b><b><span
style='font-size:10.0pt;font-family:"Garamond","serif";color:maroon'>RCHITECTURE</span><br>
</b><span style='font-size:10.0pt;font-family:"Garamond","serif"'>Responsive
Design</span> <span style='font-size:7.5pt;font-family:Symbol'>·</span> <span
style='font-size:10.0pt;font-family:"Garamond","serif"'>Technological Expertise</span>
<span style='font-size:7.5pt;font-family:Symbol'>·</span> <span
style='font-size:10.0pt;font-family:"Garamond","serif"'>Exceptional Service</span>
<br>
<a href="file:///\\www.lordaecksargent.com"><span style='font-family:"Garamond","serif"'>www.lordaecksargent.com</span></a>
<o:p></o:p></p>
<p class=MsoNormal><o:p> </o:p></p>
</div>
</div>
</body>
</html>