[Bldg-sim] 90.1 Occupancy

RobertWichert robert at wichert.org
Thu Jan 10 16:27:53 PST 2013


Thanks guys!  I appreciate the input.


Robert Wichert



=============================================
On 1/10/2013 2:01 PM, Dennis Knight wrote:
> Robert,
> Nick is right on.
> Two more schedule resources for energy models are:
> 1. The COMNET Commercial Building Energy Modeling Guidelines and 
> Procedures available online at: http://www.comnet.org/. The schedules 
> in this document are identical to and taken directly from the ASHRAE 
> 90.1 User's Manual.
> 2.  The U.S. Department of Energy Commercial Reference Building Models 
> of the National Building Stock produced by NREL.  They can be obtained 
> from the following link: http://www.nrel.gov/docs/fy11osti/46861.pdf. 
>  The schedules are found in Appendix B of this document and were 
> developed from resources as far back as 90.1-1989.  The schedules 
> include several extended building sizes and types not included in 
> 90.1.  The notes say some of the schedules have been modified based on 
> NREL's research, experience and judgement.
> Finally, I would take the recommendation of Nick one step further and 
> try to get agreement from the Owner on things like operating and 
> occupancy schedules in an OPR type of document or something. 
>  Especially if you are trying to make an estimate of future energy 
> cost/consumption which is not always a good idea without some kind of 
> disclaimer.
> Hope this helps, good luck,
> Dennis
>
> On Thu, Jan 10, 2013 at 4:18 PM, Nick Caton <ncaton at smithboucher.com 
> <mailto:ncaton at smithboucher.com>> wrote:
>
>     Hi Robert!
>
>     If you mean scheduling for lighting and/or occupancy, 90.1 does
>     not strictly require anything.  You can use whatever makes sense
>     for the building so long as you are matching between baseline and
>     proposed.
>
>     That said, if you are uncomfortable developing your own scheduling
>     and/or are looking for guidance, ASHRAE has published out
>     schedules of this nature that the 90.1 User's manual references.
>      They are a series of tables from 90.1-1989 for different building
>     occupancy types (School/Warehouse/etc).  None of these building
>     types is "4-story dorm," but you could likely reference "Hotel"
>     and/or "health/institutional."  If you don't have 90.1-1989 handy
>     on your shelves, I know these schedules are freely available
>     incorporated as part of the Washington State Energy Code (2009),
>     and possibly other places.
>
>     It's probably worth mentioning the mechanical designer (where
>     applicable) is probably the most defensible source for any
>     project-specific scheduling.  I don't always feel it's a
>     requirement, but getting the mechanical designer's input in
>     writing for any scheduling you're unsure of is always a safe bet.
>
>     It's also worth mentioning the schedules generated in a weighted
>     occupancy fashion by eQuest (which I think you're referencing)
>     have in my experience gone largely unchallenged over many LEED
>     projects.  The results are often quite reasonable when you do not
>     have anything more specific to reference.  If I recall correctly
>     some time ago, discussions across one of these mailing lists
>     revealed the schedules "under the hood" used for each occupancy
>     type are in fact referencing ASHRAE-based sources/research.
>
>     Regards,
>
>     ~Nick
>
>     NICK CATON, P.E.
>     SENIOR ENGINEER
>
>     Smith & Boucher Engineers
>     25501 west valley parkway, suite 200
>     olathe, ks 66061
>     direct 913.344.0036 <tel:913.344.0036>
>     fax 913.345.0617 <tel:913.345.0617>
>     www.smithboucher.com <http://www.smithboucher.com>
>
>
>     -----Original Message-----
>     From: bldg-sim-bounces at lists.onebuilding.org
>     <mailto:bldg-sim-bounces at lists.onebuilding.org>
>     [mailto:bldg-sim-bounces at lists.onebuilding.org
>     <mailto:bldg-sim-bounces at lists.onebuilding.org>] On Behalf Of
>     RobertWichert
>     Sent: Thursday, January 10, 2013 9:49 AM
>     To: bldg-sim at lists.onebuilding.org
>     <mailto:bldg-sim at lists.onebuilding.org>
>     Subject: [Bldg-sim] 90.1 Occupancy
>
>     Does anybody know off the top what the ASHRAE 90.1 Lighting
>     Occupancy is for High/Mid (four story) Residential Apartment/Dorm
>     (private baths)??????
>
>     I'm using "Building Area Multi-Family" now, but I'm not sure
>     that's right, and I can't find anything better.
>
>     Hoping for a better answer....
>
>
>     Thanks!
>
>
>
>     --
>     Robert Wichert P.Eng. LEED AP BD&C
>     +1 916 966 9060 <tel:%2B1%20916%20966%209060>
>     FAX +1 916 966 9068 <tel:%2B1%20916%20966%209068>
>
>
>
>
>
>
>
>     ===============================================
>
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>
> -- 
> M. Dennis Knight, P.E.
> Founder & CEO
> *W*hole *B*uilding *S*ystems, LLC
> P.O. Box 1845
> Mt. Pleasant, SC 29465
> Phone: 843-437-3647
> Email: dknight at wholebuildingsystems.com 
> <mailto:dknight at wholebuildingsystems.com>
> Website: www.wholebuildingsystems.com 
> <http://www.wholebuildingsystems.com>
>


-- 
Robert P Wichert P.Eng. Inc.
LEED AP, HERS II, CEPE
+1 916 966 9060
FAX +1 916 966 9068

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