[Bldg-sim] WLHP primary secondary loop

[Aulbach, John]

Karin:
 
What would be the purpose of two loops?
 
John R. Aulbach, PE, CEM
Project Manager
Nexant, Inc.
701 West Kimberly Ave., Suite 245
Placentia, CA 92870-6342 USA
Phone: 714-524-4402
Fax: 714-524-4407
email: jaulbach at nexant.com
 

________________________________

From: bldg-sim-bounces at lists.onebuilding.org
[mailto:bldg-sim-bounces at lists.onebuilding.org] On Behalf Of Karen
Walkerman
Sent: Thursday, May 08, 2008 4:01 PM
To: bldg-sim at lists.onebuilding.org
Subject: [Bldg-sim] WLHP primary secondary loop


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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