[Bldg-sim] Building Energy Modeling Guidelines

[Pavel Dybskiy]

Good analogy in case ... if the modeler's job is to run a model developed
by an expert, and only change weather files and sometimes windows' size and
temperature set point :)

 Pavel
On Sun, Mar 4, 2012 at 7:14 PM, Hussein Abaza <ahussein at spsu.edu> wrote:

> I think modeling is one thing, and understanding the causes and results
> when modeling is something else. It is like the X-ray technician and the
> doctor who look at the X-ray image to interpret it.  Yes, we need
> professional modeler, but we also need building technology experts who can
> derive meaningful information from the energy model to evaluate
> and improve the design. Otherwise, it will be shooting in the dark.
>
> ----- Original Message -----
> From: "Jeff Haberl" <jhaberl at tamu.edu>
> To: "Pavel Dybskiy" <pdybskiy at ryerson.ca>
> Cc: bldg-sim at lists.onebuilding.org
> Sent: Sunday, March 4, 2012 6:05:50 PM GMT -05:00 US/Canada Eastern
> Subject: Re: [Bldg-sim] Building Energy Modeling Guidelines
>
>  O.K.
>
>
>
> Here goes...
>
>
>
> Jeff
>
>
>  ------------------------------
> *From:* pdybskiy at gmail.com [pdybskiy at gmail.com] on behalf of Pavel
> Dybskiy [pdybskiy at ryerson.ca]
> *Sent:* Sunday, March 04, 2012 3:48 PM
> *To:* Jeff Haberl
> *Cc:* Paul Carey; 韩星; Ellen Franconi; bldg-sim at lists.onebuilding.org
> *Subject:* Re: [Bldg-sim] Building Energy Modeling Guidelines
>
>  Jeff,
>
>  1) Is it correct to say that any problem discussed on this list can be
> answered by referring to some of sources that were just mentioned?
>
> I have always found that the sample files that come with DOE-2 and EQUEST
> provide advise on how to model 90% of most buildings. The 10% would include
> things that can't be modeled well with DOE-2 and/or EQUEST
> including: atriums, borrowed-lite windows (i.e., glass on an inside
> partition), courtyard buildings with interior gardens (i.e., evaporative
> cooling that leads to different temps in the courtyard -- see John Reynolds
> book). If one adds the 17 DOE EnergyPlus files, then you could make that
> 95%.
>
> 2) More general.. Can you give an estimate on how many professionals in
> BEM community (ten, hundred, thousand) are, let's say, 100% educated,
> 'self-sufficient', capable of demonstrating the ultimate level of knowledge?
>
> Whew! I think there are about 100+ or so ASHRAE Certified BEM
> modelers...which grows every month. Conservatively, if you doubled or
> tripled that number to include good modelers that have not taken the exam,
> then you might have a few hundred folks that are certified or equivalent.
>
> If you want to know those who are capable of demonstrating the ultimate
> knowledge, you'd have to be code-specific, and then I would guess there are
> probably less than 20 persons per code or less that really know what they
> are doing well enought to write rewrite the code (i.e., DOE-2), or edit the
> FORTRAN and recompile the code. Unfortunately, many of the folks who wrote
> the original algorithms for DOE-2 and BLAST (a part of EnergyPlus) are no
> longer around.
>
> In the case of EnergyPlus, I would guess there are maybe 20 people that
> really know the code well enough to edit it and/or write new modules.
> Obviously, those who worked on it, and a few more, that's about it.
>
> For TRNSYS, the number is probably smaller. In the U.S. the source of most
> knowledge about TRNSYS is in Wisconsin (i.e., TESS or UofW-M).
>
> 3) More specifically.. From your experience, what is an average percentage
> of  graduates from your school  who becomes an expert in BEM?
>
> I've always believed that it takes about 10 years of constant use to
> become expert. I educate about 10 to 20 persons per year, and have done so
> for 27 years. So, about 1/2 of my students may or may not have been
> praticing for 10 years, which brings them into the realm of becoming
> expert. Our current staff at the ESL who work on our code-compliant
> web-based calculator are all expert level (...they now teach me!).
>  4) More on this... How many BEM schools are there in US?
>
> I'm sure I'll insult someone here...
>
> Can you name them?
>  I can name schools where I know folks: MIT, PSU, TAMU, UT, OSU, CU, UC
> Berkeley, UofI, ASU, UofW-Milwaukee, UofW-Madison, UofW-Milwaukee,
> Purdue,UPenn, Cornell, CUNY, U.Kansas...and others.
>
> Jeff
>
> +++++++++++++++++++++++++++++++++++++++++++++++++++
>
> Thank you,
>
>  Pavel Dybskiy
>
>
> 2012/3/4 Jeff Haberl <jhaberl at tamu.edu>
>
>>  Ellen,
>>
>>
>>
>> Here's a few more:
>>
>>
>>
>> 1. In a way the sample files that come with DOE-2.1e are showing you
>> examples of buildings that LBNL assembled to go with DOE-2. You can view
>> these with DrawBDL. However, there is only limited text that explains he
>> intent of the file, and now guideline so to speak about modeling a
>> building, in general.
>>
>>
>>
>> In a similar fashion, EQUEST comes with input files that you can view as
>> well that pretty much cover the full range of building types.
>>
>>
>>
>> Finally, the DOE EnergyPlus standard 17 building type files (that came
>> originally from Joe Huang I'm told) are also examples of how to model
>> different building types.
>>
>>
>>
>> There are also the books by Joe Clarke, Godfried Augenbroe, Jan
>> Hensen/Roberto Lambert on simulation that provide varying advice on
>> simulation.
>>
>>
>>
>> Also, TRNSYS has lots of files in their library that show how to model
>> different things (mostly systems), that are useful as well.
>>
>>
>>
>> Problem is with any guide, anywhere is that, at some point,  is has to be
>> specific to a particular simulation program, or else it becomes so general
>> that it loses it meaning.
>>
>>
>>
>> If you want something that is really interesting, look at the 1958 ASHRAE
>> paper by Buchberg that talks about modeling a one room hut using an analog
>> electrical circuit...this was the start of it all.
>>
>>
>>
>> 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
>>
>> 8=/  8=)  :=)  8=)  ;=)  8=)  8=()  8=)  :=)  8=)  8=!  8=)  8=? 8=)8=0
>>   ------------------------------
>> *From:* bldg-sim-bounces at lists.onebuilding.org [
>> bldg-sim-bounces at lists.onebuilding.org] on behalf of Paul Carey [
>> paul at zed-uk.com]
>> *Sent:* Sunday, March 04, 2012 2:53 AM
>> *To:* 韩星; Ellen Franconi
>> *Cc:* bldg-sim at lists.onebuilding.org
>> *Subject:* Re: [Bldg-sim] Building Energy Modeling Guidelines
>>
>>   Ashrae 90.1 isn't a guideline? Its a set of massively prescriptive and
>> defined rules for assessing buildings against benchmark buildings.
>>
>> We have a similar document to some extent in the UK. The national
>> calculation methodology document that accompanies the iSBEM energy
>> calculation tool available from the BRE outlines how to model in accordance
>> with UK regulations or at least it does to some extent.
>>
>> Ok whilst writing this I've altered my opinions and so both are probably
>> worth adding to list as they do have  some useful information on how to
>> define zones, etc rather than just being code style documents.
>>
>> Kind regards
>>
>> Paul
>>
>>
>>
>> Sent from my HTC
>>
>> Dr Paul Carey
>> Director
>>
>> Zero Energy Design Ltd
>> 10a Portland Place
>> 2-22 Mottram Road
>> Stalybridge
>> Cheshire
>> UK
>> SK15 3AD
>>
>> Tel - +44 161 3386200
>> Mob - +44 789 4098012
>> Email - paul at zed-uk.com
>>
>>
>>
>> ----- Reply message -----
>> From: "韩星" <foolishstar at 163.com>
>> Date: Sun, Mar 4, 2012 03:02
>> Subject: [Bldg-sim] Building Energy Modeling Guidelines
>> To: "Ellen Franconi" <efranconi at rmi.org>
>> Cc: <bldg-sim at lists.onebuilding.org>
>>
>>
>> Of course ASHRAE 90.1 APPENDIX G is the most popular guideline I think
>>
>>
>>
>>
>> At 2012-03-04 06:05:51,"Ellen Franconi" <efranconi at rmi.org> wrote:
>> I am compiling a list of published Building Energy Modeling Guidelines. I
>> know of a few and was hoping to get some help from all of you to fill it
>> out. This is what I know of:
>>
>> 1) CIBSE Applications Manual AM11: 1998, Building Energy and
>> Environmental Modelling. The manual is available to members of the United
>> Kingdom organization - the Chartered Institution of Building Services
>> (CIBSE).
>>
>> 2) From the Colorado Governor's Energy Office, ENERGY MODELING: A GUIDE
>> FOR THE BUILDING PROFESSIONAL. See
>> http://rechargecolorado.org/images/uploads/pdfs/Energy_Modelling_062411.pdf
>>
>> 3) AIA Modeling Guidelines (believe there is a draft out for public
>> review) but what I find on their website is:
>> An Architects Guide to Integrated Modeling Within the Design Process
>>
>> 4) GSA BIM to BEM also out for public review,see:
>> http://www.gsa.gov/portal/content/105075
>>
>> 5) ASHRAE Research Project 1468 BIM to BEM,
>>
>> What have others come across?
>>
>> --
>> Ellen Franconi, PhD, LEED AP, BEMP
>> Senior Consultant, Built Environment Team
>>
>> Rocky Mountain Institute
>> 1820 Folsom Street
>> Boulder, CO 80302
>> 303.567.8609 (Desk)
>> 303.245.7213 (Fax)
>>
>> Rocky Mountain Institute drives the efficient and restorative use of
>> resources, creating a world thriving, verdant, and secure, for all, for
>> ever.
>>
>> http://www.rmi.org
>>
>>
>>
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>
>
>  --
> Best Regards,
>
> Pavel Dybskiy
> M.A.Sc. Candidate, Department of Architectural Science
> Faculty of Engineering, Architecture and Science, Ryerson University
> E-mail: pdybskiy at ryerson.ca;
> telephone: 647-984-4940
>
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> --
>
> *Dr. Hussein Abaza, Assistant Professor*
>
> *Construction Management Department *
>
> *SCHOOL OF ARCHITECTURE’*
>
> *CIVIL ENGINEERING TECHNOLOGY*
>
> * And CONSTRUCTION*
>
> ****1100 South Marietta Parkway**, **Marietta**, **GA** **30060-2896******
> **
>
> Website: www.spsu.edu/cost  Tel: 678-915-3719 Fax: 678-915-4966****
>
> E-mail: ahussein at spsu.edu****
>
>
>
>
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-- 
Best
-p.d.
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