lux calculation

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Dear Sir,

It is a design process... involving various parameters.... you should be aware of all of them.

LUX = QUANTITY OF LIGHT AVAILABLE PER SQ MTR.

ASSUMPTION 1 - CONSIDER UNIFORM LIGHTING ALL OVER THE AVAILABLE SPACE.

Then, Simple lux calculation would be, Lux available at any given point

= Lumens per Lamp * no. of lamps * utilization factor

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Area of Space cosidered for uniform lighting

One practical example

No. of light fixtures - 16.

type of fixture - 2 * 250W MHL

Height of Fixture - 6 Mtr.

Area of Hall - 15 mtr. * 45 mtr. = 675 sq mtr.

250 W MHL lamp data - lumens out put put per lamp = 14500

LUX = 14500 * 2 *16* 0.55 / 675 = 378 lux. average all over the area considered.

Read "Phillip Lighting Manual" or another lighting manual, please.