When we help the guest design lighting solution, how to reasonable scientific Spaces to meet the demand of lighting conditions?If time permits, and have a computer, the GE EUROPIC software can complete the indoor illumination calculation and cloth lamp, when don't have a computer, when the time is short, can use the following rapid estimation, preliminary quick draw plan and cost budget.

一、First of all, we must learn to the table below

照度表.jpg

二、.Rapid estimation hypothesis below as a premise

1, the irradiation on the working plane to maintain lumen value is the new new light source of lamps and lanterns half lumens.
Such as: mix flux of lamps and lanterns is 3200 lm, maintain lumen value = 3200 * 0.5 = 3200 lm
2, the size of the room by illuminate is general, room surface coefficient of reflection coefficient is regular, the dust in the room situation is normal, (a general size of the room is to point to: from the height of the working plane to the lamps and lanterns of low value MH).
3, for a given room with only one kind of lamps and lanterns (when the height of the working plane to the lower part of lamps and lanterns MH is greater than 6 m, can adopt high hanging lamps and lanterns, when MH is less than 6 m, can use low hanging lamps and lanterns)

三、The calculation process

1, from the north lighting engineering society (IES industrial lighting recommended value table (see table) find application in place of illuminance value A
2, light from light source supplier lumens value of B.
3, rated source lumens value multiplied by 0.5 to get the light source to maintain lumen C B


　　4、lights qty N=(L*W)/C*A

　　5、Distance S=√「(L*W)/N」

　6, when using high hanging lamps, lamps and lanterns interval S greater than ride height;Or when using low hanging lamps, lamps and lanterns of interval S greater than 1.5 times the ride height, (suspension height is: face to the height of the lamps and lanterns below at the bottom of the MH), if the lamps and lanterns of interval S is too big, should choose low power level of the light source, repeat the third step, until the interval S meet the requirements of lamps and lanterns.
7, cloth lamp principle: lamps and lanterns should be from the middle to the boundary, when the row or column of lamps and lanterns into odd number, should be a line or a list of lamps and lanterns is located in the center line, when the row or column of lamps and lanterns is accidentally, the lamps and lanterns of center recently distance from the centerline of the lamps and lanterns should be half of the interval S.Lamps and lanterns is apart from the nearest wall wall distance less than or equal to 0.5 S.