[Equest-users] External Light Load

[Nick Caton]

Hi Rakesh,

 

In wizards you are forced to enter exterior lighting in units of W/SF.
In detailed edits we can more intuitively enter the load in kW units.

 

In wizards, divide watts (8,260W in this case) by the area of the shell
under which you are defining the exterior lighting load - use the area
displayed in the zone/footprint definition screen for reference.  Note
with multiple shells the resulting figure may seem otherwise entirely
arbitrary but this procedure will result in the correct lighting load
(slight deviations of rounding notwithstanding).

 

I would take care to define exterior lighting only once under (i.e.
under a single shell) if you have multiple shells.  You may end up with
a multiplier on your external loads if you copy shells and forget to
turn them off after the first shell.  If you wish to define
multiple/distinctly-scheduled exterior lighting loads, I would wait to
do that in detailed edits where it's (a) more intuitive and (b) you can
assign those distinct schedules.

 

~Ncik

 

 

 

NICK CATON, P.E.

SENIOR ENGINEER

 

Smith & Boucher Engineers

25501 west valley parkway, suite 200

olathe, ks 66061

direct 913.344.0036

fax 913.345.0617

www.smithboucher.com <x-msg://1149/www.smithboucher.com>  

 

From: equest-users-bounces at lists.onebuilding.org
[mailto:equest-users-bounces at lists.onebuilding.org] On Behalf Of Daniel
Knapp
Sent: Friday, January 20, 2012 9:05 AM
To: rakeshdesai at ecpl.co.in
Cc: equest-users at lists.onebuilding.org
Subject: Re: [Equest-users] External Light Load

 

The external lighting entry is watts/square foot of floor area, not
total watts.

 

Cheers,

Dan

 

-

Daniel Knapp, PhD, LEED(r) AP O+M

danielk at arborus.ca

 

Arborus Consulting

Energy Strategies for the Built Environment

www.arborus.ca

76 Chamberlain Avenue 

Ottawa, ON, K1S 1V9 

Phone: (613) 234-7178 ext. 113

Fax: (613) 234-0740

 

 

 

On 2012-01-20, at 1:11 AM, <rakeshdesai at ecpl.co.in> <
rakeshdesai at ecpl.co.in> wrote:





Hi,

 

I put external light of 8.26 kW which is operating for 12 hours per day
and for 365 days in year. As per simple calculation, the energy
consumption of external lighting should be 8.26 kW X 12 Hours X 365 Days
= 36179 kWh/annum.

 

However, when I run the model, I got 3046692 kWh/annum. I checked the
schedule and it is ok.

 

What could be wrong?

 

Rakesh

_______________________________________________
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/20120120/7a78a5c7/attachment-0002.htm>
-------------- next part --------------
A non-text attachment was scrubbed...
Name: not available
Type: image/jpeg
Size: 1459 bytes
Desc: image001.jpg
URL: <http://lists.onebuilding.org/pipermail/equest-users-onebuilding.org/attachments/20120120/7a78a5c7/attachment-0002.jpeg>