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 href="mailto:kevin@warren-energy.com">kevin@warren-energy.com</a>> wrote:<br>
<blockquote class="gmail_quote" style="border-left: 1px solid rgb(204, 204, 204); margin: 0pt 0pt 0pt 0.8ex; padding-left: 1ex;">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 class="Ih2E3d"><br>
-----Original Message-----<br>
From: <a href="mailto:equest-users-bounces@lists.onebuilding.org">equest-users-bounces@lists.onebuilding.org</a><br>
[mailto:<a href="mailto:equest-users-bounces@lists.onebuilding.org">equest-users-bounces@lists.onebuilding.org</a>]On Behalf Of Bishop,<br>
Bill<br>
Sent: Wednesday, May 07, 2008 9:29 AM<br>
</div><div class="Ih2E3d">To: Abaza Hussein; <a href="mailto:equest-users@lists.onebuilding.org">equest-users@lists.onebuilding.org</a>;<br>
<a href="mailto:bldg-sim@lists.onebuilding.org">bldg-sim@lists.onebuilding.org</a><br>
</div><div><div></div><div class="Wj3C7c">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 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 href="mailto:bbishop@pathfinderengineers.com">bbishop@pathfinderengineers.com</a><br>
<br>
<a href="http://www.pathfinderengineers.com" target="_blank">www.pathfinderengineers.com</a><br>
-----Original Message-----<br>
From: <a href="mailto:bldg-sim-bounces@lists.onebuilding.org">bldg-sim-bounces@lists.onebuilding.org</a><br>
[mailto:<a href="mailto:bldg-sim-bounces@lists.onebuilding.org">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 href="mailto:equest-users@lists.onebuilding.org">equest-users@lists.onebuilding.org</a>; <a href="mailto:bldg-sim@lists.onebuilding.org">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>
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