[Equest-users] Electrical loads

Hernandez, Arturo ahernandez at owpp.com
Tue Mar 17 06:25:50 PDT 2009


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

 

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
<blocked::BLOCKED::http://www.thepdcgroup.com/> 

P.E. Registrations: TX, LA. OH. CO. MS. CA. FL. OK

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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



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
<blocked::BLOCKED::http://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

 

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