2

specifying lighting in CBECC-Com

What are the options for specifying lighting? Is lighting power density the only method used?

NORESCO's avatar
341
NORESCO
asked 2014-11-04 18:57:28 -0500
edit flag offensive 0 remove flag close merge delete

Comments

add a comment see more comments

2 Answers

1

Lights can be defined as a lighting power density or within a lighting system. The lighting system method allows the entry of luminaire types and the quantity of each type in the space. Each lighting system can be assigned to a daylit area type for use with daylighting controls: Skylit, the portion of the floor that receives daylight from a skylight; Primary Sidelit, portion of the floor that receives the highest amount of daylight from a window; Secondary Sidelit, portion of the floor that receives a lower, but still useful, amount of light from a window; or none for that portion of the space which is not daylit.

cbecc's avatar
286
cbecc
answered 2014-11-05 11:43:30 -0500
edit flag offensive 0 remove flag delete link

Comments

add a comment see more comments
0

Is it possible to account for daylight dimming if using the lighting power density approach?

I have a project where the LPD has been specified equal to the allowance, the lighting is 100% controlled to a lux setpoint for each zone with daylit area (primary and secondary). I would expect the energy results to be close to the Standard model, but it's 34% WORSE.

The project has 100% dimmable LEDs with daylighting everywhere possible, and I'd like to take credit for that without having to specify every fixture in my simplified model.

Greg Collins's avatar
530
Greg Collins
answered 2016-11-30 15:09:54 -0500
edit flag offensive 0 remove flag delete link

Comments

add a comment see more comments