[Bldg-sim] Leed eac1 Plug loads

Karen Walkerman kwalkerman at gmail.com
Mon Feb 17 09:28:58 PST 2014


Philippe,

That is a useful document. Thanks! Do you know where I can find the
schedules that are referenced in the table? (A, B, C, etc)

Thanks again,

Karen
On Feb 14, 2014 4:37 PM, "Hudon, Philippe" <phudon at bpa.ca> wrote:

>  Hi,
>
>
>
> In Canada's norms, there are this table as reference for the plug loads.
>
>
>
> Regards,
>
>
>
>
>
> [image: cid:image001.jpg at 01CEFA41.CCA337B0]
>
> *Philippe Hudon**_ing., M.Sc.A.*
>
> phudon at bpa.ca <smayer at bpa.ca>   |  www.bpa.ca  |  t: 5143833747x2805|  cell:
> 4187204339
> 381 rue Belvédère, Alma, Qc, G8B 5Y9
>
> Les informations contenues dans le courriel que vous venez de recevoir, y
> compris les pièces jointes, sont destinées à l'usage exclusif de la (ou
> des) personne(s) identifiée(s) comme destinataires et sont confidentielles.
> Si vous n'en êtes pas le destinataire, soyez avisé que tout usage en est
> interdit. Si vous avez reçu ce courriel par erreur, veuillez le retourner à
> l'expéditeur et le supprimer complètement de votre système informatique.
>
>
>
> *De :* bldg-sim-bounces at lists.onebuilding.org [mailto:
> bldg-sim-bounces at lists.onebuilding.org] *De la part de* Nick Caton
> *Envoyé :* 13 février 2014 16:36
> *À :* Duggin, Cory; David Eldridge; bldg-sim at lists.onebuilding.org
> *Objet :* Re: [Bldg-sim] Leed eac1 Plug loads
>
>
>
> This matches my experience as well for plug loads.
>
>
>
> I would only plan to itemize plug loads for LEED documentation if
> attempting to document an energy saving measure above and beyond 90.1
> pertaining to receptacle loads (such as plug load circuit controls required
> by the upcoming title 24).
>
>
>
> ASHRAE recommends 0.75 W/ft2 for office building receptacle power density
> in the user's manual for 90.1-2007 (for when you don't have better data to
> found the inputs on).  10W/m2 is approximately 0.93W/ft2 (if my math is
> right), so that's certainly within a reasonable range of expectations.
>
>
>
> I do not anticipate you will have any issues.  I've regularly documented
> exactly the value per the user's manual citing that as the source in my
> documentation with no further comment.
>
>
>
> ~Nick
>
>
>
> [image: cid:489575314 at 22072009-0ABB]
>
>
>
> *NICK CATON, P.E.*
>
> SENIOR ENGINEER
>
>
>
> Smith & Boucher Engineers
>
> 25501 west valley parkway, suite 200
>
> olathe, ks 66061
>
> direct 913.344.0036
>
> fax 913.345.0617
>
> www.smithboucher.com
>
>
>
> *From:* bldg-sim-bounces at lists.onebuilding.org [
> mailto:bldg-sim-bounces at lists.onebuilding.org<bldg-sim-bounces at lists.onebuilding.org>]
> *On Behalf Of *Duggin, Cory
> *Sent:* Thursday, February 13, 2014 3:26 PM
> *To:* David Eldridge; bldg-sim at lists.onebuilding.org
> *Subject:* Re: [Bldg-sim] Leed eac1 Plug loads
>
>
>
> I've never had to provide an itemized list for equipment loads after
> simply telling them the receptacle loads were modeled as designed per space
> type.
>
>
>
> *Cory Duggin, EI *
>
> *Energy Engineer I *
>
> *TLC Engineering for Architecture *
>
> direct:
>
> 615-346-1939
>
>
>
> *From:* bldg-sim-bounces at lists.onebuilding.org [
> mailto:bldg-sim-bounces at lists.onebuilding.org<bldg-sim-bounces at lists.onebuilding.org>]
> *On Behalf Of *David Eldridge
> *Sent:* Thursday, February 13, 2014 3:24 PM
> *To:* bldg-sim at lists.onebuilding.org
> *Subject:* Re: [Bldg-sim] Leed eac1 Plug loads
>
>
>
> At lower than 25% levels GBCI likely will ask for an itemized list to show
> that you've considered all of the potential contributors. In addition to
> Fred's list, add elevators if these aren't separately modeled. Water
> coolers. Anything that shows up with a connection in the electrical plans.
>
>
>
> David
>
>
>
>
>
>
>
>
> David S. Eldridge, Jr., P.E., LEED AP BD+C, BEMP, BEAP, HBDP
>
> *Grumman/Butkus Associates*
>
>
>
>
>
>
>
>
> *From:* bldg-sim-bounces at lists.onebuilding.org [
> mailto:bldg-sim-bounces at lists.onebuilding.org<bldg-sim-bounces at lists.onebuilding.org>]
> *On Behalf Of *Fred Betz
> *Sent:* Thursday, February 13, 2014 3:17 PM
> *To:* Chris Yates; bldg-sim at lists.onebuilding.org
> *Subject:* Re: [Bldg-sim] Leed eac1 Plug loads
>
>
>
> Chris,
>
>
>
> The plug loads are the plug loads. The 25% is just a guidance value from
> USGBC/GBCI. I've been over and under this level numerous times without a
> problem.
>
>
>
> If you've used the load estimated by the mechanical and/or electrical
> engineers and apply an appropriate schedule then it should be good enough.
>
>
>
> When you're under the 25% threshold a text box will appear for you to
> explain why. Just state that you've modeled the plug loads as designed.
>
>
>
> 10 W/m2 sounds a little low for an office. If the owner has made a
> commitment to use Energy Star devices or laptops for everyone, then 10 W/m2
> is plausible. Don't forget to include other equipment like servers/IT
> equipment, copiers and kitchen equipment (microwave, coffee maker, etc.)
>
>
>
>
>
> Fred
>
>
>
>
>
> *Fred Betz*  PhD., LEED AP (R)BD&C
> Senior Sustainable
> Systems Analyst
>
>
>
> *AEI* | AFFILIATED ENGINEERS, INC.
> 5802 Research Park Blvd. | Madison, WI  53719
>
> P: 608.236.1175 | F: 608.238.2614
> fbetz at aeieng.com  |  *www.aeieng.com <http://www.aeieng.com/>*
>
>
>
>
>
> *From:* Chris Yates [mailto:chris.malcolm.yates at gmail.com<chris.malcolm.yates at gmail.com>]
>
> *Sent:* Thursday, February 13, 2014 2:28 PM
> *To:* bldg-sim at lists.onebuilding.org
> *Subject:* [Bldg-sim] Leed eac1 Plug loads
>
>
>
> Dear bldg sim'rs
>
> I'm a little concerned that the plug loads I've modelled in my offices are
> low and could leed to some unwanted usgbc comments.
>
> I'm meeting the 25% requirement but the peak load in the offices is
> 10w/m2. Whilst i dont think this is overly optimistic the reviewers may
> think otherwise. Has anybody had experience of plug loads being queried in
> detail?
>
> Many thanks
>
> Chris
>
> Sent from my Android device. Please excuse typos, etc.
>
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