How to calculate the number of Duodawa with LED lights
Road lighting requirements: mainly including illumination requirements, illumination uniformity requirements of two kinds.Uniformity is generally over 0.3, the greater the uniformity, indicating that the street lights, walking more open, lighting effect is better.Illumination is related to power and installation height of luminaire. For the street lamp, we hope that the greater the angle of light, the better evenness can be achieved, and that the distance between the lamp posts can be widened, the number of the lamp posts can be reduced, and the cost can be saved.
It's time to test the street lights of 200W. Because different manufacturers of street lamps, the use of LED road lamp holder is not the same, with light lens is not the same, resulting in the same big power of the total luminous flux is not the same, then the results will make the pavement illumination is not the same.To sea lighting 200W, a single luminous flux of more than 114, the installation of 14 meters height, spacing 40 meters, the average illuminance can reach more than 15LUX, the uniformity of more than 0.7.These indicators can not reach the main road lighting standards, can only meet the lighting requirements of secondary roads. To achieve the main road lighting standards, then almost need to use 240W or so.
First of all, if the width of the road is 20 meters wide, the road should be the main road, and the cloth lights will do.Assuming the double symmetrical cloth light, the lamp pole height is at least greater than the width of the road 1/2, so the pole height is 12-14 meters.Suppose the 14 meter pole, the street lamp installation spacing is generally about 3 times the height of the lamp post, so the distance is at least 40 meters.40 meters distance, height 14 meters, in this case, LED street lamp power to more than 200W power, can basically meet the main road lighting requirements.
