[Equest-users] Electrical loads

[Karen Walkerman]

I would hardly say that residential internal loads are inconsequential.  You
can get average yearly energy use for refrigerators and washing machines
from the energy star website.  You'll then have to break it down into power
density and a yearly use schedule.  Also check out:

http://www.eia.doe.gov/emeu/recs/recs2001/enduse2001/enduse2001.html

for general appliance yearly energy use.  Funny thing is that residential
apartment lighting seems to be the most difficult parameter to nail down.

--
Karen

On Tue, Mar 17, 2009 at 9:25 AM, Hernandez, Arturo <ahernandez at owpp.com>wrote:

>  *FOR LEED* the 25% is not a requirement. It is more of a guideline for
> energy modelers to account for energy consumption on their plug loads. If
> the 25% of the Process Load is not reached then you should documentation
> explaining your assumptions. For example in a hospital you would typically
> go over the 25%, this doesn’t  mean you stop at 25%, you should account for
> whatever your plug load is and do not have to submit extra documentation
> (unless asked). On the other hand if you had a school, you would probably
> fall short of the 25% making you submit extra documentation with your
> assumptions. As long as your assumptions are reasonable the 25% should not
> be a big issue. In your case you would have give your schedule and energy
> intensity of your plug loads and explain your assumptions based on a
> reference.
>
>
>
> *ARTURO HERNANDEZ, LEED AP*
>
>
>
> *From:* equest-users-bounces at lists.onebuilding.org [mailto:
> equest-users-bounces at lists.onebuilding.org] *On Behalf Of *Brahme, Rohini
> UTRC
> *Sent:* Tuesday, March 17, 2009 7:52 AM
> *To:* Mike Rabena; equest-users at lists.onebuilding.org
>
> *Subject:* Re: [Equest-users] Electrical loads
>
>
>
> There is a requirement of 25% of the total cost should be misc loads for
> LEED.
>
> Also, when you look at the breakdown of energy efficient residences, the
> plug loads is a big chunk.
>
> -Rohini
>
>
>
> *From:* equest-users-bounces at lists.onebuilding.org [mailto:
> equest-users-bounces at lists.onebuilding.org] *On Behalf Of *Mike Rabena
> *Sent:* Tuesday, March 17, 2009 6:58 AM
> *To:* equest-users at lists.onebuilding.org
> *Subject:* Re: [Equest-users] Electrical loads
>
>
>
> The last question is specific to LEED EA Credit 1
>
>
>
> *Mike Rabena, P.E., LEED AP*
>
> *[image: PDC LOGO]***
>
> *14011 Park Dr.*
>
> *Suite 209*
>
> *Tomball, TX 77377*
>
> *PH:  281-356-9002- EXT 202*
>
> *FX:   281-356-9008*
>
> *Cell: 832-493-2066*
>
> * *
>
> Website: *www.thepdcgroup.com*
>
> P.E. Registrations: TX, LA. OH. CO. MS. CA. FL. OK
>
> * **The information in this email may be confidential and/or privileged.
> This email is intended to be reviewed by only the individual(s) or
> organization(s) named above. If you are not the intended recipient or an
> authorized representative of the intended recipient, you are hereby notified
> that any review, dissemination or copying of this email and its attachments,
> if any, or the information contained herein is prohibited. If you have
> received this email in error, please immediately notify the sender by return
> email and delete this email from your system. Thank You*
>
>
>
> *From:* Mike Rabena
> *Sent:* Tuesday, March 17, 2009 5:54 AM
> *To:* 'equest-users at lists.onebuilding.org'
> *Subject:* Electrical loads
>
>
>
> When modeling energy use in a residential high-rise I set up schedules for
> misc. loads like refrigerator, microwave, oven washer/dryer etc.. I actually
> lumped these all into 1 schedule, approximated their actual loads and then
> applied a daily and weekend schedule to approximate their use.
>
>
>
> My schedules showed pretty low percentages since these appliances would not
> be used much.
>
>
>
> I received comments from the client and another modeler that these loads
> are inconsequential and should not be incorporated into the model.
>
> Here is the comment
>
> *Plug-ins are typically assumed to be the copiers, medical equipment, etc
> and I would think refrigerators, microwaves because how do we really measure
> the use of such things in a current comprehensive computer modeling
> situation – it’s beyond a scope of comparison in a finite way  - that’s why
> MISC should be junked.*
>
>
>
>
>
> Any opinions?
>
>
>
> *Mike Rabena, P.E., LEED AP*
>
> *[image: PDC LOGO]***
>
> *14011 Park Dr.*
>
> *Suite 209*
>
> *Tomball, TX 77377*
>
> *PH:  281-356-9002- EXT 202*
>
> *FX:   281-356-9008*
>
> *Cell: 832-493-2066*
>
> * *
>
> Website: *www.thepdcgroup.com*
>
> P.E. Registrations: TX, LA. OH. CO. MS. CA. FL. OK
>
> * **The information in this email may be confidential and/or privileged.
> This email is intended to be reviewed by only the individual(s) or
> organization(s) named above. If you are not the intended recipient or an
> authorized representative of the intended recipient, you are hereby notified
> that any review, dissemination or copying of this email and its attachments,
> if any, or the information contained herein is prohibited. If you have
> received this email in error, please immediately notify the sender by return
> email and delete this email from your system. Thank You*
>
>
>
> _______________________________________________
> Equest-users mailing list
> http://lists.onebuilding.org/listinfo.cgi/equest-users-onebuilding.org
> To unsubscribe from this mailing list send  a blank message to
> EQUEST-USERS-UNSUBSCRIBE at ONEBUILDING.ORG
>
>
-------------- next part --------------
An HTML attachment was scrubbed...
URL: <http://lists.onebuilding.org/pipermail/equest-users-onebuilding.org/attachments/20090317/b94559f6/attachment-0002.htm>