Calculation of the illumination of the entrance to a residential apartment building
Hello, I appeal again. Help with a consultation on how to calculate the power of a light bulb providing at the entrance of a residential apartment building with illumination of 6 Lux. I rummaged through the entire Internet, found nothing. Thank you, I still hope for an answer.
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Hello! The formula is as follows: Fl = (En * S * k * z) / (N * η * n),
Where:
Fl - luminous flux of the bulb;
Yong is the norm of illumination, in your case it is rather 20 Lx, and not 6.
S is the area of the room;
k - safety factor (accepted 1 for LED lamps or 1.1 for incandescent lamps);
z - correction factor (coefficient of unevenness), in your case 1.1.
N is the number of fixtures;
η - coefficient of use of the light flux (on the Internet there is a whole instruction for its calculation);
n is the number of lamps in the lamp.
Substitute all the data in the formula, consider and on the basis of the total value you buy light bulbs that are suitable for the characteristics.