[Bldg-sim] Exterior Lighting Power Calculation for Building Facades
Robby Oylear
robbyo at rushingco.com
Thu Feb 4 08:21:28 PST 2010
Can anyone with experience showing compliance with ASHRAE 90.1-2004
section 9.4.5 enlighten me as how the baseline calculation should be done?
The confusion Im having is with the definition of an illuminated wall or
surface length when applying the 5.0 W/linear foot allowance for building
façades. How is the lineal footage of an illuminated wall determined?
For example, if a 100 wide wall has one exterior lighting fixture on it
at the center, is the entire wall considered to be illuminated and thus
the baseline lighting power allowance is 500W? Or is there some method of
determining the actual portion of the wall that is illuminated?
This came up on a LEED project where I had applied table 9.4.5 as
conservatively as possible and only considered a portion of the wall to be
illuminated at each fixture.
Any help would be greatly appreciated.
Robby Oylear, LEED® AP
Mechanical Engineer
direct: 206.788.4571
cell: 206.354.2721
www. <http://www.rushingco.com> rushingco.com
-------------- next part --------------
An HTML attachment was scrubbed...
URL: <http://lists.onebuilding.org/pipermail/bldg-sim-onebuilding.org/attachments/20100204/f81dde43/attachment.htm>
More information about the Bldg-sim
mailing list