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How to select the lamps according to the area you want to illuminate?
QTo select the lamps, you must be clear about what type of work is going to be carried out in the place. The following table shows the recommended average illumination in typical cases. In order to calculate the average illumination, some concepts and magnitudes must be taken into account. Først skal du kende stedets dimensioner.
Having the dimensions, we proceed to calculate the index of the premises:
To determine the ideal height that the luminaire should have, the relationships in the following table can be applied:
On the other hand, to know the appropriate distance between luminaires, we could use the following equations:
Efter at have klarlagt den fysiske fordeling af lokalerne og de anbefalede afstande, fortsætter vi med at vide, hvilke reflektionsfaktorer der skal bruges til loft, vægge og gulv:
|
Refleksionsfaktorer |
||
|
Sted |
Farve |
Refleksionsfaktor (ρ) |
|
Tag |
Hvid |
0,7 |
|
Selvfølgelig |
0,5 |
|
|
Medium |
0,3 |
|
|
Vægge |
Selvfølgelig |
0,5 |
|
Medium |
0,3 |
|
|
mørkt |
0,1 |
|
|
jorden |
Selvfølgelig |
0,3 |
|
mørkt |
0,1 |
|
Having this, we select the utilization factor that adapts to the reflection factors obtained, using the following table:
Finally, the maintenance factor is selected with this table:
|
Vedligeholdelsesfaktorer |
|
|
Miljø |
Faktor (fm) |
|
Rens |
0,8 |
|
beskidt |
0,6 |
Ved at tage værdierne for bredde, længde, udnyttelsesfaktor og vedligeholdelsesfaktor, opnås den samlede lysstrøm, der kræves i installationen, ved hjælp af følgende ligning:
Being the average lighting required in the place (Measured in lux). Having the total luminous flux, the lamp is selected and the total flux is divided by the flux of one lamp to obtain the number of lamps needed.
