High pressure sodium lamp no match for LED street light

LED appear new features after the advent of white light, LED as new light source into the lighting field. In the pass a decade, LED technology and product development is very rapid, high power LED chips was appear, such as emergence, heat dissipation, these problems solving progress continuously, make LED street lamp start in township and village roads, residential district road, city branch on application, and further to the urban trunk road to try.

Here are several problems of application of LED street lamp and comparison to high pressure sodium lamp which be widely used .    

1, about the analysis and comparison of energy efficiency

Should according to achieve the same illumination (brightness) level, close to the lighting quality standards under the premise of comparing the lighting installation power.Because of the high pressure sodium lamp high-power tubes (250 ~ 400 W) high light efficiency, can reach 110 ~ 110 m/W, and small power tubes (100 ~ 150 W) photosynthetic efficiency is about 80 ~ 1001 m/W, and the effective photosynthetic efficiency of TEK LED street lamp is 160 lm/W, 210 W LED street lamp luminous flux can reach 33600 lm, LED street light than the high-pressure sodium lamp can energy saving 30% ~ 40%, the highest can amount to 50%.
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2,  the analysis of  the light color and road lighting effect

High pressure sodium lamp of correlated color temperature (Tcp) is about 2100 k, is warm color temperature, the color rendering index (Ra) only 23 ~ 25, low CRI; LED street light now use a variety of color temperature (3000-6000 k), the Ra can reach 70 ~ 80, good color rendering.As fast track of motor vehicles, the main road, slant yellow light lamp, to see the front road, about 90 ~ 160 m distance effect better than white slightly, especially in the fog, dusty air condition, the warm white have an advantage, single from the color temperature to choose high pressure sodium lamp or LED street lamp can be.For sidewalks, commercial pedestrian street, residential area, such as roads, LED street light CRI is better than HPS, distinguish the situation more clearly, have more advantages.
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3, economic analysis and contrast
For now, LED street light price is obviously higher than high pressure sodium lamp.A lot of people want to use 210 w LED street light to replace 400W high pressure sodium lamp, but all suffer from the high price. So does used 210 w led street lamp really so expensive?
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From the above, we can find that less than two months we can earn early investment back from electricity.

In conclusion, high pressure sodium lamp no match for LED street light.If you want to buy LED street lights, you can contact us.TEK lighting can make detailed plan for you.

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