Advantages of solar LED street lights compared to high pressure sodium lamps

Comparison of solar LED street lamps and traditional high-pressure sodium lamps

Then there is only one problem left. What is the comparison between solar LED street lamps and traditional high-pressure sodium lamps in terms of cost performance? It can be said that solar LED street lamps have the following advantages:

1. Solar LED street lights use clean renewable energy, which can reduce carbon dioxide emissions compared to traditional high-pressure sodium lamps. If the 20 million street lamps in 2009 were all switched to solar LED street lights, they could reduce 25.8 million tons of carbon dioxide emissions, equivalent to $10.3 billion in carbon dioxide abatement costs.

2. The biggest problem with traditional AC power supply circuit lights is the laying of transmission and distribution cables, which increases the consumption of valuable copper resources. It is necessary to dig trenches and damage the road surface. And these streetlight cables are still the ideal target for theft. It is very simple to set up a solar street light. It is like planting a big tree, dig a pit and bury it.

3. AC power supply is 15% lower than solar power supply efficiency, which means that to obtain the same output power, it is necessary to input 15% more electric power when using AC power. Moreover, there is a problem of power factor. If no compensation is added, it will cause an increase in the reactive power of the power grid.

4. The biggest advantage of solar LED street lights is that they do not need to pay for electricity. The annual electricity bill for a 250-watt high-pressure sodium lamp is about 766 yuan. The electricity bill for 20 million street lamps is 153.3 billion yuan.

5. The life of ordinary high-pressure sodium lamps is only 3000-5000 hours, and the life of LEDs can reach 30,000-50,000 hours, and with the advancement of technology, the life of LEDs is likely to be as high as 100,000 hours.

As a new type of lighting technology, LED has the advantages of low power consumption, high luminous efficiency, good color rendering, high reliability, small size, light weight, energy saving and environmental protection, and long service life. It is considered by the industry to be the future lighting technology. The main development direction. Since the LED is a cold light source, the semiconductor lighting itself has no pollution to the environment, and the power saving efficiency can reach more than 90% compared with the incandescent lamp and the fluorescent lamp. At the same brightness, the power consumption is only 1/10 of that of ordinary incandescent lamps, and 1/2 of fluorescent tubes, and its energy-saving efficiency is considerable.

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