In Greenice we want more people to enjoy the savings provided by LED bulbs.
How to select the lamps according to the area you want to illuminate?
PARA selecting the lamps should be clear what kind of work will be done in the place, the following table shows the average lighting recommended in typical cases, in order to calculate the average lighting, some concepts and magnitudes must be taken into account . First, the dimensions of the place must be known.
Having the dimensions, we proceed to calculate the local index:
To determine the ideal height that the luminaire must have, the relationships of the following table can be applied:
On the other hand, to know the appropriate distance between luminaires, we could use the following equations:
Having clear the physical distribution of the premises and the recommended distances, we proceed to know what reflection factors use for the ceiling, walls and soil:
|
Reflection factors |
||
|
Place |
Color |
Reflection factor (ρ) |
|
Ceiling |
White |
0,7 |
|
Clear |
0,5 |
|
|
Half |
0,3 |
|
|
Walls |
Clear |
0,5 |
|
Half |
0,3 |
|
|
Dark |
0,1 |
|
|
Floor |
Clear |
0,3 |
|
Dark |
0,1 |
|
Having this, we select the use factor that adapts to the reflection factors obtained, through the following table:
Finally, the maintenance factor with this table is selected:
|
Maintenance factors |
|
|
Atmosphere |
Factor (FM) |
|
Clean |
0,8 |
|
Dirty |
0,6 |
Having the values of wide, length, maintenance use and factor factor, the total luminous flux required in the installation is obtained by means of the following equation:
Being the average lighting required in place (measured in lux). Having the total luminous flux, the lamp is selected and the total flow is divided between the flow of a lamp to obtain the necessary number of lamps.
