On the main streets of Beihai Road and Dongfang Street in Weifang, Shandong, white LED street lights have completely replaced the high-pressure sodium lamps to provide illumination for the entire street. On some roads, the red butterfly woven by red LEDs Show the beauty of the kite capital of Weifang.
Since October 2006, Weifang has installed LED street lights in the city, and has installed more than 20,000 baht. It is understood that this is also the largest LED urban road lighting project in the world.
Help energy saving and emission reduction
LED street lights can be widely promoted and applied in Weifang, and are inseparable from the leadership and promotion of local government and information industry bureaus. We are actively carrying out energy conservation and emission reduction work. Li Chuanheng, director of the Weifang Information Industry Bureau, told reporters that LEDs consume less electricity and are greener, which is consistent with the government's goal of building a resource-saving and environment-friendly society. Therefore, we vigorously promote this application.
All of these LED street lights are independently developed and produced by Zhongweiguang Electronics Co., Ltd., which is engaged in LED chip manufacturing and packaging in Weifang High-tech Zone. Zhang Hui, executive vice president of LED marketing of the company, calculated an account for the reporter of China Electronics News. If 10,000 watts of LED light with a total power consumption of 140 watts is used instead of high-pressure sodium lamps with a total power consumption of 500 watts, LED street light The annual electricity consumption is 562 kWh, while the high-pressure sodium lamp consumes 2008 kWh a year. This way, the use of LED street lights can save 72% of the original electricity consumption. In this way, assuming that 10,000 watts of high-pressure sodium lamps with a total power consumption of 500 watts are replaced by a total power consumption of 140 watts of LED street lamps, the annual coal savings is 5,784 tons, and the water saving is 57.84 million liters. 3,933 tons, carbon dioxide emission reduction is 14,417 tons, sulfur dioxide emission reduction is 434 tons. From the perspective of the cost of the line materials, 10,000 tons of high-pressure sodium lamps consume 324 tons of copper, copper cables cost 34.46 million yuan, and 10,000 LED street lamps consume 79 tons of copper, and copper cables cost 6.43 million yuan. It can be seen from these data that the application of LED street lamps plays a very important role in energy conservation and environmental protection.
LED lights have many advantages
Not only in China, China Micro-Optical Electronics has done some projects abroad, such as the Australian subway station project, the energy-saving effect is very obvious. In that project, all the 36-watt fluorescent fluorescent lamps in the subway station were replaced with 3,000 LED lamps of medium-light-light electronics. The total power consumption of a 36-watt fluorescent fluorescent lamp is about 42 watts, while the power consumption of a 14-watt LED fluorescent lamp is still substantially 14 watts. Thus, the power saving rate after using the LED lamp is 70%. Because the subway station is operated 24 hours a day, the lights are not turned off, so the power saving effect is very obvious. In the application of 1 year and 7 months, the investment in replacement has been fully recovered through power saving. Zhang Hui said, moreover, when using fluorescent fluorescent lamps, because of the short life of the lamps, they need to organize the lamps to be replaced once a year, and because of the long life of the LED fluorescent lamps, the cost of replacement is eliminated.
In general, LED fluorescent lamps have a power saving rate of more than 70% compared with fluorescent fluorescent lamps; LED fluorescent lamps have a lifetime of 50,000 hours, while fluorescent fluorescent lamps have only 8,000 hours; LED fluorescent lamps do not contain mercury, and each fluorescent fluorescent lamp contains 30 mg of mercury; LED fluorescent lamps do not. Contains fragile products such as glass; LED fluorescent lamps do not emit ultraviolet light, while fluorescent fluorescent lamps emit ultraviolet light. The advantages of LED lights in energy saving and environmental protection are very obvious.
Technical cost bottlenecks are resolved
Some market reports believe that the large-scale application of LED street lights will be launched in 2010. The report believes that the current LED street lamp products are in the initial stage, and the main problem is that the heat dissipation is not good, which not only causes the luminous efficiency to drop, but also the light decay problem is serious or even invalid, and there is no industry standard to regulate the product. However, Zhang Hui believes that LED street lights currently have large-scale promotion conditions.
We have an advantage, that is, we do both chip design and chip packaging. In this way, a number of patented technologies have been accumulated in chip design and packaging, which can solve the heat dissipation problem of LED street lamps more quickly and reduce the light decay. From the practical application, the stability of the products has been suitable for large-scale promotion. Zhang Hui said.
The reporter learned that China Micro-Optical Electronics currently has 38 patented technologies, of which 28 are invention patents, mainly focusing on chips and packaging. Many patents are used to reduce thermal resistance and fully dissipate heat, making the product truly efficient and long-lived.
In addition to heat dissipation, there is a threshold that is high cost. The reporter learned that the current cost of LED street lights is relatively expensive, and a LED street light can cost several thousand yuan. In this regard, Zhang Hui explained that the 10,000-kilometer 400-watt sodium lamp installed on the 175-kilometer road was replaced by a 130-watt LED street lamp. The daily operation was 11 hours, and the electricity cost per kWh was only 1 yuan. The cost will be recovered within 24 months. And cost recovery is just on the alternative road. Zhang Hui said that if it is a new road, the investment of LED lights and sodium lamps is the same, because the wires required for LED lights are thin, copper is saved, and the transformers are also smaller in size, which just offsets the increase in the cost of the light source. However, the LED street lamp's five-year operating expenses have been reduced by 78 million yuan!
Moreover, users are highly recognized for the adoption of energy-saving and environmentally-friendly LED products. Zhang Hui said that we have done a number of projects, including street lighting, tunnel lighting, and the promotion of LED lights to restaurants and schools, can show the advantages of LED lights. At present, our installation volume has exceeded 33,000 baht, and we are confident in the large-scale promotion in the future. He also cited the example of tunnel lights. They installed more LED lights in Anhui. Because the LED lights are not easy to break, the problem of the existing tunnel lights being easy to repair is solved. Repairing in the tunnel is a very complicated matter, parking on both sides of the tunnel. He said.
Zhongweiguang Electronics was founded in November 2004 by the team of Dr. US. The company's positioning is very clear, that is, in the field of LED white light lighting, they only do general lighting. Our strategic plan is to lay the foundation for one or two years, to scale in three to five years, and to become first-class in ten years. Zhang Hui said that according to this plan, 2008 will be the time for us to scale.
The reporter learned that at present, they produce 100,000 LED lamps every month. This year, they will introduce two new MOCVD (Metal Organic Chemical Vapor Deposition) equipment to expand their scale and make new changes in capital and partners. .
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