I?d also insert:

1. There is no functional or accuracy advantage to entering lighting loads as an LPD once you know and have entered the loads as kW. In fact, there is the possibility you?ll accidentally leave both inputs entered, which will end up doubling the lighting loads (these inputs are additive).

2. If your purpose is to determine the lighting power density for the entire building, here?s the method I presently use as a balance of efficiency/accuracy:

a. File ? Export File ?Space Loads Report (CSV) [and Open it when the dialog comes up]

b. Note the Activity Description column, if your project was generated via the Wizards, you should probably observe a consistent marker for your plenum spaces: ?(unknown)?

c. Use some if/then logic in excel to sum lighting power installed outside plenums, and then divide by the associated sum area. (note space area is a separate column available).

Best of luck!

~Nick

Nick Caton, P.E.

Senior Energy Engineer
Energy and Sustainability Services
North America Operations
Schneider Electric

D 913.564.6361
M 785.410.3317
E nicholas.caton at schneider-electric.com
F 913.564.6380

15200 Santa Fe Trail Drive
Suite 204
Lenexa, KS 66219
United States

Hi Rathna,

Could you please tell me the findings from the following equations.
The thing without doing it in eQUEST 3.65 is that
LOCAL("LIGHTING-KW")*1000/LOCAL("AREA")
may result in some other things as i know.

Actually i am unable to get the findings.
The things that i am able to interpret is that you will have the LPD (
watts per square feet) from this as per you.

Could you please tell me how without inputting kW one can get the
results anyhow. This seems to me to be me miscalculation and
mis-interpretation as per me as if you will input kW as power then there is
left no means to calculate the LPD as watts per square feet as this is not
within the limitations of eQUEST anyhow.

Thanks,

Sharad.Kumar|Engineer.

Green Horizon Consulting LLP.

Gurgaon.

India

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........................................................................

Hi Sharad,

Alternatively, once you enter the lighting power KW, you can just use the
user expression : LOCAL("LIGHTING-KW")*1000/LOCAL("AREA"), the LPD will get
updated by itself.

Regards,

Rathnashree

.............................................................................................................

............................................................
.................................................

You can also use a BDL expression to do the same thing automatically and
eliminate a step. For example:

10*(#L("AREA"))

Where ?10? is the wattage of the installed lights in the space and
?#L(?AREA?)? grabs the area of the space in which the lighting load is
being applied.

I hope this helps.

Sincerely,

incerely,

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DAVID W. GRIFFIN II
BEMP
ENERGY ANALYST
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Salt Lake City, UT 84109
*Office* 801.924.5028
archnexus.com
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[Note about the above e-mail]:

Thanks Griffin, but the above message can help only when the lighting load
is 10 watts for one fixture but my post has been in general like any
lighting power calculations can be done by my way.

Your way is to help with one lighting load but as per my e-mail the
lighting fixtures and their number can help to do the calculations.

Also one thing is missing that the window dialogue (as shown in
my snap-shots) has both lighting load as watts per square feet and kW which
can be input as one at one time.

Thanks,

Sharad.Kumar|Engineer.

Green Horizon Consulting LLP.

Gurgaon.

India