<div>I would like to specify a heat exchanger efficiency between the ground loop and the heat pump loop. I have found a work-around in that I can use "Supply Loss DT" instead.</div>
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<div>Thanks,</div>
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<div>~karen~<br><br> </div>
<div><span class="gmail_quote">On 5/8/08, <b class="gmail_sendername">Aulbach, John</b> <<a onclick="return top.js.OpenExtLink(window,event,this)" href="mailto:jaulbach@nexant.com" target="_blank">jaulbach@nexant.com</a>> wrote:</span>
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<div dir="ltr" align="left"><span><font face="Arial" color="#0000ff" size="2">Karin:</font></span></div>
<div dir="ltr" align="left"><span><font face="Arial" color="#0000ff" size="2"></font></span> </div>
<div dir="ltr" align="left"><span><font face="Arial" color="#0000ff" size="2">What would be the purpose of two loops?</font></span></div>
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<div align="left"><font color="#0000ff">John R. Aulbach, PE, CEM</font></div>
<div align="left"><font face="Arial" size="2"><em>Project Manager</em></font></div>
<div align="left"><font face="Arial" size="2"><font color="#0000ff">Nexant, Inc</font>.</font></div>
<div align="left"><font face="Arial" size="2">701 West Kimberly Ave., Suite 245</font></div>
<div align="left"><font face="Arial" size="2">Placentia, CA 92870-6342 USA</font></div>
<div align="left"><font face="Arial" size="2">Phone: 714-524-4402</font></div>
<div align="left"><font face="Arial" size="2">Fax: 714-524-4407</font></div>
<div align="left"><font face="Arial" size="2">email: <a title="mailto:jaulbach@nexant.com" onclick="return top.js.OpenExtLink(window,event,this)" href="mailto:jaulbach@nexant.com" target="_blank">jaulbach@nexant.com</a></font></div>
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<font face="Tahoma" size="2"><b>From:</b> <a onclick="return top.js.OpenExtLink(window,event,this)" href="mailto:bldg-sim-bounces@lists.onebuilding.org" target="_blank">bldg-sim-bounces@lists.onebuilding.org</a> [mailto:<a onclick="return top.js.OpenExtLink(window,event,this)" href="mailto:bldg-sim-bounces@lists.onebuilding.org" target="_blank">bldg-sim-bounces@lists.onebuilding.org</a>] <b>On Behalf Of </b>Karen Walkerman<br>
<b>Sent:</b> Thursday, May 08, 2008 4:01 PM<br><b>To:</b> <a onclick="return top.js.OpenExtLink(window,event,this)" href="mailto:bldg-sim@lists.onebuilding.org" target="_blank">bldg-sim@lists.onebuilding.org</a><br><b>Subject:</b> [Bldg-sim] WLHP primary secondary loop<br>
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<div></div>Hi All,<br><br>Does anyone have experience setting up a primary/secondary loop with WLHP loops? Is this possible?<br><br>Thanks,<br><br>~karen~<br><br><br><br>
<div class="gmail_quote">On Wed, May 7, 2008 at 3:09 PM, Kevin Warren <<a onclick="return top.js.OpenExtLink(window,event,this)" href="mailto:kevin@warren-energy.com" target="_blank">kevin@warren-energy.com</a>> wrote:<br>
<blockquote class="gmail_quote" style="PADDING-LEFT: 1ex; MARGIN: 0pt 0pt 0pt 0.8ex; BORDER-LEFT: rgb(204,204,204) 1px solid">We looked at balance temperature in my Master's Thesis at the UW-Madison<br>Solar Lab back in 1992. It was sponsored by the Wisconsin Center for Demand<br>
Side Research (now the Energy Center of Wisconsin). Balance temperature was<br>not the main focus of our research, but we examined interval gas consumption<br>for a sample of about 100 homes - all from a Midwestern city. The data was<br>
on a 5-minute basis. I can't recall how the sample was determined, so I'm<br>unsure how representative was the mix of homes. They were from a variety of<br>sizes, but it looks like most of them were built in the 80s, so they were<br>
newish homes at the time. The average balance temp was about 65F. I'm not<br>sure the spread around that mean.<br><br>Kevin Warren, P.E., CEM, LEED AP<br>Warren Energy Engineering, LLC<br>(610) 255-3798 ph<br>(610) 255-3406 f<br>
<div><br>-----Original Message-----<br>From: <a onclick="return top.js.OpenExtLink(window,event,this)" href="mailto:equest-users-bounces@lists.onebuilding.org" target="_blank">equest-users-bounces@lists.onebuilding.org</a><br>
[mailto:<a onclick="return top.js.OpenExtLink(window,event,this)" href="mailto:equest-users-bounces@lists.onebuilding.org" target="_blank">equest-users-bounces@lists.onebuilding.org</a>]On Behalf Of Bishop,<br>Bill<br>Sent: Wednesday, May 07, 2008 9:29 AM<br>
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<div>To: Abaza Hussein; <a onclick="return top.js.OpenExtLink(window,event,this)" href="mailto:equest-users@lists.onebuilding.org" target="_blank">equest-users@lists.onebuilding.org</a>;<br><a onclick="return top.js.OpenExtLink(window,event,this)" href="mailto:bldg-sim@lists.onebuilding.org" target="_blank">bldg-sim@lists.onebuilding.org</a><br>
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<div>Subject: Re: [Equest-users] [Bldg-sim] Balance point temperature for<br>houses<br><br><br>Hussein,<br><br>I'll admit that I didn't even know what the balance point temperature<br>was. I did some quick internet research and found this resource:<br>
<br><a onclick="return top.js.OpenExtLink(window,event,this)" href="http://arch.ced.berkeley.edu/vitalsigns/res/downloads/rp/balance_point/balance_point_big.pdf" target="_blank">http://arch.ced.berkeley.edu/vitalsigns/res/downloads/rp/balance_point/b<br>
alance_point_big.pdf</a><br><br>There is a lot of information about building heat gains and losses and<br>how degree days are calculated. It mentions on p.55 that the 65F number<br>was determined in the 1940s, and that newer, better insulated homes have<br>
a lower balance point, but it doesn't suggest a number.<br><br>William Bishop, EIT, LEED(r) AP | Pathfinder Engineers LLP<br>Mechanical Engineer<br><br>3300 Monroe Ave., Suite 306<br>Rochester, NY 14618<br>TEL (585) 218-0730 Ext. 114<br>
FAX (585) 218-0737<br><a onclick="return top.js.OpenExtLink(window,event,this)" href="mailto:bbishop@pathfinderengineers.com" target="_blank">bbishop@pathfinderengineers.com</a><br><br><a onclick="return top.js.OpenExtLink(window,event,this)" href="http://www.pathfinderengineers.com/" target="_blank">www.pathfinderengineers.com</a><br>
-----Original Message-----<br>From: <a onclick="return top.js.OpenExtLink(window,event,this)" href="mailto:bldg-sim-bounces@lists.onebuilding.org" target="_blank">bldg-sim-bounces@lists.onebuilding.org</a><br>[mailto:<a onclick="return top.js.OpenExtLink(window,event,this)" href="mailto:bldg-sim-bounces@lists.onebuilding.org" target="_blank">bldg-sim-bounces@lists.onebuilding.org</a>] On Behalf Of Abaza<br>
Hussein<br>Sent: Tuesday, May 06, 2008 3:53 PM<br>To: <a onclick="return top.js.OpenExtLink(window,event,this)" href="mailto:equest-users@lists.onebuilding.org" target="_blank">equest-users@lists.onebuilding.org</a>; <a onclick="return top.js.OpenExtLink(window,event,this)" href="mailto:bldg-sim@lists.onebuilding.org" target="_blank">bldg-sim@lists.onebuilding.org</a><br>
Subject: [Bldg-sim] Balance point temperature for houses<br><br>Could you please help. Is there any recent data or survey about the<br>balance<br>point temperature of homes in the US. Is the 65F still applicable?<br>I appreciate any input.<br>
Dr. H. Abaza<br>ECU<br><br><br>_______________________________________________<br>Bldg-sim mailing list<br><a onclick="return top.js.OpenExtLink(window,event,this)" href="http://lists.onebuilding.org/listinfo.cgi/bldg-sim-onebuilding.org" target="_blank">http://lists.onebuilding.org/listinfo.cgi/bldg-sim-onebuilding.org</a><br>
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_______________________________________________<br> </div></div>Equest-users mailing list<br><a onclick="return top.js.OpenExtLink(window,event,this)" href="http://lists.onebuilding.org/listinfo.cgi/equest-users-onebuilding.org" target="_blank">http://lists.onebuilding.org/listinfo.cgi/equest-users-onebuilding.org</a><br>
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