[Equest-users] Exterior Lighting

[Nick Caton]

Hi Lisa,

 

If you wish to model exterior lighting savings, by all means include it in your model(s)!  

 

I only mean to caution that entering W/SF into more than one shell would be additive and might result in a total installed watts you didn’t intend for – it is much simpler in wizards stage to limit input for all exterior lighting to a single shell, per my instructions below.

 

You would likely input your baseline values in the same fashion as your proposed… Your options include manually entering via W/SF in the wizards, manually entering as installed kW in the detailed edit, or alternatively defining a parametric run with a modified value in the detailed edit.  Note that in the wizards you don’t have the option to adjust the scheduling for such loads that you do in detailed edit.

 

If your question is rather “what is the baseline value,” that answer depends on what your baseline standard is – what are you modeling against?  It’s likely either “what’s currently installed” if it’s an existing building you’re improving/renovating, or else a figure you’ll need to calculate per 90.1 or a similar energy standard/code if it’s new construction/LEED.  COMcheck is a free software package that can make such calculations very simple... but be sure you read and understand the standard being followed.

 

Best of luck!

 

~Nick

 

 

NICK CATON, E.I.T.

PROJECT ENGINEER

Smith & Boucher Engineers

25501 west valley parkway

olathe ks 66061

direct 913 344.0036

fax 913 345.0617

www.smithboucher.com 

 

From: Lisa Li [mailto:li.lisa at ymail.com] 
Sent: Wednesday, December 15, 2010 4:10 PM
To: Nick Caton; Brian Fountain; equest-users at lists.onebuilding.org
Subject: Re: [Equest-users] Exterior Lighting

 

Thanks Nick and Brian.
Do you mean for building energy modeling, it is not necessary to input exterior lighting? If I try to get energy saving credit from exterior lighting, how should I input baseline value?
Lisa Li

________________________________

From: Nick Caton <ncaton at smithboucher.com>
To: Brian Fountain <bfountain at greensim.com>; equest-users at lists.onebuilding.org
Sent: Wed, December 15, 2010 2:30:53 PM
Subject: Re: [Equest-users] Exterior Lighting




The phrasing is a little off for the wizard approach...

 

If you want to enter the exterior lighting wattage prior to detailed edit and not have to correct it after the fact, divide the sum of the installed exterior watts by the square footage of the shell you are entering the W/SF value in (the exact area to use for this is displayed on the 2nd shell screen).  Enter that W/SF figure in only one shell if you have multiples.

 

If you follow that, you’ll have the exact installed watts entered correctly.

 

Total exterior area lit does not come into the equation.

 

~Nick

 

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NICK CATON, E.I.T.

PROJECT ENGINEER

Smith & Boucher Engineers

25501 west valley parkway

olathe ks 66061

direct 913 344.0036

fax 913 345.0617

www.smithboucher.com 

 

From: equest-users-bounces at lists.onebuilding.org [mailto:equest-users-bounces at lists.onebuilding.org] On Behalf Of Brian Fountain
Sent: Wednesday, December 15, 2010 12:49 PM
To: equest-users at lists.onebuilding.org
Subject: Re: [Equest-users] Exterior Lighting

 

You can do that -- or wait and add as a direct load to the electric meter in detailed edit mode (which is what the wizard is going to do anyway).

On 12/15/2010 12:37 PM, Lisa Li wrote: 

Dear All,

How should we modle the exterior lighting? If I know the total exterior lighting wattages, should I divide the total outdoor area to get watt / sq ft for wizard screen 23 inputing? 

Thanks,

Lisa Li

 

  
  
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