[Equest-users] Interior LPD Baseline & Proposed

[Vikram Sami]

My two cents:

Cent 1: 
If you don't really have any controls out of the ordinary (occ sensors, daylight dimming), its probably not too far off using the whole building method. The dollar sign at the end of this cent is that if you have some spaces with a really high lighting power density (much higher than the average), you might want to use the space by space method to simulate the additional heat load to that space from the lights.

Cent 2: 
If you have control strategies like occ sensors or daylight dimming, you probably want to use the space by space method. You don't want to penalize yourself (or credit yourself) for controls in a space that has a significantly different LPD from the average. 

At the end of the day its a judgement call - I have done both on different projects. 


Vikram Sami, LEED AP
Direct Phone 404-253-1466 | Direct Fax 404-253-1366

LORD, AECK & SARGENT ARCHITECTURE
Responsive Design · Technological Expertise · Exceptional Service
www.lordaecksargent.com 



-----Original Message-----
From: equest-users-bounces at lists.onebuilding.org on behalf of Pasha Korber-Gonzalez
Sent: Tue 3/9/2010 00:01
To: David S Eldridge
Cc: equest-users at lists.onebuilding.org
Subject: Re: [Equest-users] Interior LPD Baseline & Proposed
 
David & Nick are both correct-just remember either 'space-for-space' OR
'area-by-area'.  I always use the area method--only for the reason that I
get bored and annoyed looking up individual space LPD's in the chapter 9
table.  It is more interesting to me to do the space take-offs for my
proposed building and calculate the zone area-average LPD -it helps me get
more familiar with the characteristics of the spaces/zones I am modeling.
In some models where we don't have reflected ceiling plans or LPD-zone
take-off from the lighting desingers then I can still assume the area
method which keeps my inputs simplified.

pk

On Mon, Mar 8, 2010 at 6:41 PM, David S Eldridge <DSE at grummanbutkus.com>wrote:

>  Appendix G in 2004 says to use the same method of categorization that you
> use in the proposed building.  This would be especially important if the
> areas of the project have varying schedules or methods of lighting control.
>
>
>
> David
>
> http://www.grummanbutkus.com
>
>
>
>
>
>
>
> *From:* equest-users-bounces at lists.onebuilding.org [mailto:
> equest-users-bounces at lists.onebuilding.org] *On Behalf Of *Nick Caton
> *Sent:* Monday, March 08, 2010 7:36 PM
> *To:* Soham Babu; equest-users at lists.onebuilding.org
> *Subject:* Re: [Equest-users] Interior LPD Baseline & Proposed
>
>
>
> Hi Soham,
>
>
>
> I am no USGBC reviewer, but I have submitted comparative models in the past
> using the "actual" design, and working out an equivalent LPD for the whole
> building applied uniformly to the spaces.  I do not think there is anything
> preventing you from entering the individual space LPD's in the proposed
> model, excepting that could take a bit more time.  You may find it pushes
> your energy savings further however depending on the rest of your model.
>
>
>
> [image: cid:489575314 at 22072009-0ABB]**
>
> * *
>
> *NICK CATON, E.I.T.***
>
> PROJECT ENGINEER
>
> 25501 west valley parkway
>
> olathe ks 66061
>
> direct 913 344.0036
>
> fax 913 345.0617
>
> *Check out our new web-site @ *www.smithboucher.com* *
>
>
>
> *From:* equest-users-bounces at lists.onebuilding.org [mailto:
> equest-users-bounces at lists.onebuilding.org] *On Behalf Of *Soham Babu
> *Sent:* Wednesday, March 03, 2010 12:29 AM
> *To:* equest-users at lists.onebuilding.org
> *Subject:* [Equest-users] Interior LPD Baseline & Proposed
>
>
>
> Hi all,
>
>
>
> In the baseline interior LPD I have gone with  building area method, but
> for proposed the electrical floor plans as given space by space LPD ,if I go
> with space by method in proposed ASHRAE recommends ? or shall I have to go
> with both identical like if I follow building area method in baseline
> identical in proposed if yes, than can I take average  LPD of the all
> spaces?
>
>
>
> Any help will be greatly appreciated
>
>
>
> Kind Regards
>
> Soham babu
>
>
>
> _______________________________________________
> 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
>
>