[Bldg-sim] Building envelope

[Jeff Haberl]

FYI...



If you are thinking about how accurate an energy model may or may not be, there has been quite a bit of work done by the ASHRAE Standard 140 over the last 20 years, including: empirical, comparative and analytical models of the building envelope, air side systems. Standard 140 is a standard method of test for simulation that is used by others to see if the algorithms inside the program are performing correctly. The IEA and others have tests as well, which include side-by-side test boxes.



Jeff



8=!  8=)  :=)  8=)  ;=)  8=)  8=(  8=)  8=()  8=)  8=|  8=)  :=')  8=)8=?

Jeff S. Haberl, Ph.D.,P.E., FASHRAE..............jhaberl at tamu.edu

Professor............................................................Office Ph: 979-845-6507

Department of Architecture.............................Lab Ph:979-845-6065

Energy Systems Laboratory.............................FAX: 979-862-2457

Texas A&M University.....................................77843-3581

College Station, Texas, USA, 77843..................URL:www.esl.tamu.edu

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________________________________
From: bldg-sim-bounces at lists.onebuilding.org [bldg-sim-bounces at lists.onebuilding.org] on behalf of leen peeters [l.f.r.peeters at gmail.com]
Sent: Sunday, January 22, 2012 3:08 AM
To: Jeremiah Crossett
Cc: bldg-sim at lists.onebuilding.org; Jon Broadway
Subject: Re: [Bldg-sim] Building envelope

Jeremiah,

it is already a pretty large building. I assume most people are like me ... really occupied. A small thing can be smached in between, but not something that might take me 6 to 8 hours to analyse and model. Should we not look for something smaller? A might be able to get some data on a passive house in Belgium. Something less than 200 m2, measured during over a year.

Leen

On Sat, Jan 21, 2012 at 9:47 PM, Jeremiah Crossett <jeremiah at setnrgh2o.com<mailto:jeremiah at setnrgh2o.com>> wrote:
I have two office buildings with data, including energy star portfolio manager data, and actual utility meeter data. Also I have architectural data on them.  For the one I have three years data on, the other only one year.   See the attached for the one with the best data and let me know if one of these works..

On Sat, Jan 21, 2012 at 11:00 AM, RobertWichert <robert at wichert.org<mailto:robert at wichert.org>> wrote:
Now THAT would be a better test than I envisioned, Jon.  I was just thinking of comparing models, NOT comparing them to a real building.  Sounds like fun though!





Robert Wichert P.Eng. LEED AP
+1 916 966 9060<tel:%2B1%20916%20966%209060>
FAX +1 916 966 9068<tel:%2B1%20916%20966%209068>







===============================================


On 1/21/2012 9:15 AM, Jon Broadway wrote:
Mr Wichert:  And the next question would be , “Where do we find such an existing  bldg. with real demand and energy data set already available?.”     I would assume that many such exist, but I , for one, would not know how to begin to identify one.  Maybe the folks at NREL or LNBL have access to such data, and maybe one from there could kindly respond to your request?

Regards,
Jon A . Broadway

From: RobertWichert [mailto:robert at wichert.org]
Sent: Friday, January 20, 2012 12:55 PM
To: Jon Broadway; bldg-sim at lists.onebuilding.org<mailto:bldg-sim at lists.onebuilding.org>

Subject: Re: [Bldg-sim] Building envelope

Yes, of course.  I was thinking of a non-residential one-story wood frame, steel studs, or concrete block building with one or two windows per side and a cathedral ceiling on a poured slab.  A basement would be OK too, but not really necessary.  Either no zoning at all or a core for toilets/break rooms and open plan office all around.

I mean REALLY simple.




Robert Wichert P.Eng. LEED AP

+1 916 966 9060<tel:%2B1%20916%20966%209060>

FAX +1 916 966 9068<tel:%2B1%20916%20966%209068>















===============================================

On 1/20/2012 10:08 AM, Jon Broadway wrote:
Mr Wichert: Although I like your idea of head-to-head modeling, I think it would only be real useful if one could start with a “simple” bldg. for wahich there was existing good quality energy and demand data set.   That way, one could not only have “precision “ but also some baseline of “accuracy”.

I like you idea,  but to start small and simple would be key for me,  so as not to commit a large amount of time.

Thanks for your suggestion.

Jon Broadway

Jon  Broadway, Ph.D., P.E.
Member, US  Green Building Council
Member, International Building Performance Standards Association (IBPSA)

Energy Savers Unlimited

600 South Court St
Suite 305
Montgomery AL  36104
Cell  phone   334- 430-0262<tel:334-%20430-0262>





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--
Jeremiah D. Crossett
Setanta Energy & Water
Phone: 503-688-8951<tel:503-688-8951>
Email: jeremiah at setnrgh2o.com<mailto:jeremiah at setnrgh2o.com>
http://www.setnrgh2o.com/


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