[Bldg-sim] Exterior lighting power

[Vikram Sami]

James Hess brought up a point about exterior lighting power in 90.1-2004 models. I'm currently finishing up a LEED 2.2 model, and am setting up my exterior lighting loads for my base building. I used table9.4.5 to calculate the allowable exterior lighting for this and it comes out to 4.6 kW for a 10,00 ft2 building. Seems high. The biggest part of this load is the building façade component which allows 0.2 w/lf for the facades. How do you calculate this - do you assume ALL the facades of the base building will be lit - even if they are not lit in the designed building? 

 

Vikram Sami, LEED AP 
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