[Bldg-sim] WLHP primary secondary loop

[Karen Walkerman]

Hi All,

Does anyone have experience setting up a primary/secondary loop with WLHP
loops?  Is this possible?

Thanks,

~karen~



On Wed, May 7, 2008 at 3:09 PM, Kevin Warren <kevin at warren-energy.com>
wrote:

> We looked at balance temperature in my Master's Thesis at the UW-Madison
> Solar Lab back in 1992. It was sponsored by the Wisconsin Center for Demand
> Side Research (now the Energy Center of Wisconsin). Balance temperature was
> not the main focus of our research, but we examined interval gas
> consumption
> for a sample of about 100 homes - all from a Midwestern city. The data was
> on a 5-minute basis. I can't recall how the sample was determined, so I'm
> unsure how representative was the mix of homes. They were from a variety of
> sizes, but it looks like most of them were built in the 80s, so they were
> newish homes at the time. The average balance temp was about 65F. I'm not
> sure the spread around that mean.
>
> Kevin Warren, P.E., CEM, LEED AP
> Warren Energy Engineering, LLC
> (610) 255-3798 ph
> (610) 255-3406 f
>
> -----Original Message-----
> From: equest-users-bounces at lists.onebuilding.org
> [mailto:equest-users-bounces at lists.onebuilding.org]On Behalf Of Bishop,
> Bill
> Sent: Wednesday, May 07, 2008 9:29 AM
> To: Abaza Hussein; equest-users at lists.onebuilding.org;
> bldg-sim at lists.onebuilding.org
> Subject: Re: [Equest-users] [Bldg-sim] Balance point temperature for
> houses
>
>
> Hussein,
>
> I'll admit that I didn't even know what the balance point temperature
> was.  I did some quick internet research and found this resource:
>
> http://arch.ced.berkeley.edu/vitalsigns/res/downloads/rp/balance_point/b
> alance_point_big.pdf<http://arch.ced.berkeley.edu/vitalsigns/res/downloads/rp/balance_point/balance_point_big.pdf>
>
> There is a lot of information about building heat gains and losses and
> how degree days are calculated.  It mentions on p.55 that the 65F number
> was determined in the 1940s, and that newer, better insulated homes have
> a lower balance point, but it doesn't suggest a number.
>
> William Bishop, EIT, LEED(r) AP | Pathfinder Engineers LLP
> Mechanical Engineer
>
> 3300 Monroe Ave., Suite 306
> Rochester, NY  14618
> TEL (585) 218-0730 Ext. 114
> FAX (585) 218-0737
> bbishop at pathfinderengineers.com
>
> www.pathfinderengineers.com
> -----Original Message-----
> From: bldg-sim-bounces at lists.onebuilding.org
> [mailto:bldg-sim-bounces at lists.onebuilding.org] On Behalf Of Abaza
> Hussein
> Sent: Tuesday, May 06, 2008 3:53 PM
> To: equest-users at lists.onebuilding.org; bldg-sim at lists.onebuilding.org
> Subject: [Bldg-sim] Balance point temperature for houses
>
> Could you please help. Is there any recent data or survey about the
> balance
> point temperature of homes in the US. Is the 65F still applicable?
> I appreciate any input.
> Dr. H. Abaza
> ECU
>
>
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