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Lighting

LIGHTING

To convert the light level to a specific power, there is a basic rule: 2/3 W/m² per 100 lux.

Example:

We take the example of an office of 20m ² where 5 fluorescent tubes 36W lamps are hanging. Fluorescent tubes are relatively efficient and give about 80 lm/W off. In addition, we let the electrical ballast out of consideration. The amount of light (lm) of the lights coming is then 5 x 36 W x 80 lm / W = 14,400 lm. Furthermore, we assume an efficiency of 80% for the fixture and an efficiency of 70% for the room. The illuminance on the floor is 80% x 70% x 14,400 / 20 sqm. = 400 lm / m² or 400 lux.

In addition to the choice of the 36 Watt, we have some alternatives with 2 x 36 Watt, 1 x 58 Watt or 2 x 58 Watt.

1. Spaces where 200-300 lux per m² is required:

-      Storage spaces

-      Archives

-      Industrial buildings

-      Workplaces

 

2. Spaces where 450-500 lux per m2 is required:

-      Office

-      Fitness

-      Gym

-      Showroom

-      Classrooms

-      Kindergarten

-      Retail spaces

-      Entrance / corridor / waiting room

 

3. Spaces where 800-1000 lux per m2 is required:

-      Optician

-      Laboratory

-      Dentist

-      Kitchen

Do you have questions or are you interested?
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