As a new type lighting technology, LED, especially the high brightness LED, is receiving world-wide attention and is crowned as the most valuable light source in 21st century. No matter in terms of luminescence mechanism or in terms of functions and other aspects, LED is enjoying unrivalled advantages compared with other traditional light source. Therefore, LED has become the trend in lighting industry in the 21st century and is on its way of replacing the tradition light source.
Energy conservation. LED is a cold light source, and semiconductor illumination itself does not cause any pollution to the environment, its energy efficiency can reach 90% compared with the incandescent lamp and fluorescent lamps. With the same brightness, LED’s power consumption is 1/10 of the incandescent and 1/5 of the fluorescent lamp. If using LED to replace 50% of the current traditional illumination, the electricity we can save each year is equal to that generated by a medium power station; therefore the energy conservation benefit is very considerable.
Healthy. LED is a kind of green light source. LED is DC driven and has no frequency flashing, without infrared and ultraviolet components; it does not have radiation pollution, but the color display is obvious, boasting very strong luminescence directionality; it can exchange the glossy function well and produce no collimation error when color temperature changes; cold light source’s calorific capacity is low and safe to touch. All those are impossible for the incandescent lamp and fluorescent lamp to reach.
Art. Light color is the key element to compose the visual aesthetics and is an important means to beautify the environment. The selected light source directly affected the art effect. LED has peerless advantage in terms of lighting arts.
Personalization. Anytime and anywhere, we can control the change of light brightness and color according to various demands, circumstances and different understanding of life/environment, simulating various brightness to guide or change a mood, and embodying more personalizing illumination environment.
Stability. The life span of LED is as long as 50000 hours, being reliably stable and in no need of maintenance in 10 years.
Comprehensive Benefit Analysis
Take the new-installed street lamps for example. If the main street is 20km long and the space between 2 ten-meter-high lamp masts is 40m, 1000 pcs of 150W, single-arm LED street lights in both directions are needed.(suppose the power of original sodium street lamps are 450 -500 watts ). Let’s conduct a comparative analysis between the traditional HPS street lamps and LED ones.
Economic benefit
Presuming the power rate is 0.24 Dollars/ kilowatt-hour
Each year you can save 1.562 Million kilowatt-hour
You can save USD374,928.00
If one kilowatt-hour needs consuming 0.35KG of coal or 0.298 kg of raw oil that means you can save about 546.77 tons of coal or 465.54 tons of oil each year.
Social benefits ---carbon dioxide reduce
If one kilowatt-hour needs consuming 0.35KG of coal,
1000g of carbon dioxide and 30g of sulfur dioxide will be discharged.
As the above-mentioned statistics suggested, we can reduce the emission of about 1562.2 tons of carbon dioxide and 46.87 tons of sulfur dioxide every year.
Carbon dioxide and sulfur dioxide is the cause of aerosphere warming. Therefore, governments worldwide have taken action towards the climate change. The utilization of new energy which is pollution-free is the first step of energy conservation, consumption reduction and pollution treatment. On the basis of the above analysis, we can draw the conclusion that energy conservation, consumption reduction and environment protection, on one hand, will defuse the tense situation caused by energy insufficiency when bringing economic benefits to us; on the other hand, the sustainable development of domestic economy will be contributed to. (study of Dong Dian Intl Lmtd)
