Li Xinghua (data picture)
Li Xinghua, director of the Science and Technology Department of Guangdong Province, said in an interview with the Yangcheng Evening News that LED street lights will be cheaper than high-pressure sodium lamps in the future.
After the news reports on LED street lights came out of the street, many readers were concerned about it. How about the use of LED street lamps in Guangdong? How should Guangdong LED's future industrial development path go?
“LED lamps have a long life span and are energy-saving and environmentally friendly.†Li Xinghua, director of the Science and Technology Department of Guangdong Province, said in an exclusive interview with the Yangcheng Evening News reporter: “From the perspective of the development of strategic emerging industries, it is necessary to master high-end core technologies to compete with others. To promote by opening the market."
Initial cost is expensive? Energy saving to pay back
Compared with traditional street lamps, LED street lamps are definitely expensive in terms of initial installation cost, but from the overall development trend, it will be cheaper than high-pressure sodium lamps.
"It can be said that compared with traditional street lamps, LED street lamps are definitely expensive in the initial installation cost, but from the overall development trend, it will be cheaper than high-pressure sodium lamps." Li Xinghua opened the door and responded to the "high price" problem.
Take Foshan Chancheng District, which already uses LED street lights, as an example. When LED street lights were purchased and installed in March 2009, the 210-watt lamps needed 9,000 yuan. After 8 months, the price has dropped sharply to more than 5,000 yuan. cheaper."
Similarly, Dongguan Shipai Town, which has already used LED street lights, has also calculated an account: when it began to replace LED street lights in 2008, 210 street lamps cost 2.62 million yuan, and each lamp cost 13,000 yuan (connected) When the replacement of 2412 street lamps in the town and 2886 street lamps in the village was completed in 2009, the cost was only 29.68 million yuan, and the average lamp cost was about 5600 yuan. “The attempt of Shipai Town can be said to be a pilot,†said Zhang Derong, director of the Dongguan Municipal Civic Center. “For the replacement of LED streetlights, there is no need to replace the poles and lines. Just replace the lamps.â€
At present, most of the LED street lights in Guangdong use the business model of “contract energy management + supply chain management + financeâ€: the government does not spend extra money when replacing LED street lights, but enters through investment in the form of investment by energy management companies. Divided from the saved electricity bill, the street lamp was handed over to the government after the deadline. “In fact, we also had concerns at the beginning,†said Yang Qingbo, director of the Solution Center of Guangdong CITIC Energy Supply Chain Management Co., Ltd., who has been involved in investing in LED street lights in Guangdong. “But after really understanding the performance of LEDs, we are relieved.†As an example of the demonstration road in the district, the actual saving of electricity is 68.49%. After the replacement of the LED streetlights in the town of Shijie, Dongguan, the average saving rate of street lamps from February to August 2009 was 59%.
No industry standard? Customized check system
LED technology is developing too fast, and prematurely setting the national unified standard has no guiding significance for this industry.
“LED technology is in the stage of rapid development.†Li Xinghua explained to the readers that “the LED industry is mixed and there is no national standardâ€. He explained: “A mature product speaks standards. But LED technology has developed too fast. Early development of a unified national standard has no guiding significance for this industry. However, the absence of a national unified standard does not mean that there is no bottom line." Li Xinghua pointed out that for the use of LED street lights, Guangdong Province has launched a "standard index."
The “Benchmark Index†is not complicated to say. It is to regularly test a number of enterprise products that have been widely used and widely acclaimed, and obtain a dynamic index representing the level of product innovation in the LED lighting industry, that is, the benchmark index, and then use the benchmark index. The quality of products is graded, and in a word, it is the method of “snapping the platformâ€â€”“our model does not specify products, but only products with good quality can be used. The top ten products in this region will be used preferentially. Ten people can't use it. This not only guarantees the quality of the product, but also breaks the regional blockade." Li Xinghua pointed out, "And this standard is still changing, and it is adjusted once every time according to the development level of LED products."
Li Xinghua said that Guangdong is actively promoting the benchmarking system to become the technical standard of the alliance, and conducts continuous analysis and research on the technical development level and market application status of LED lighting products through the benchmark system, striving to play a leading role in the formulation of international standards. . Li Xinghua said that to vigorously develop LED, the most important market application is to start the market by the government. "Mainly public lighting, this part of the resources is in the hands of the government, mainly to choose high-power street lighting. This promotion is a vital part of the development of the industry, the large-scale application, the industry is pulled up, More companies will be attracted to Guangdong." Yangcheng Evening News reporter Li Xiaoli
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LED lamp high life geometry? One person, for a lifetime, with a lamp
"In theory, the life of LED products is 100,000 hours. We often say that one person, for a lifetime, uses a lamp." Professor Wen Weisheng from the Institute of Optoelectronic Materials and Devices, School of Materials Science, South China University of Technology pointed out that "in addition to energy saving. Environmental protection, no mercury, no UV, and low maintenance costs are the biggest advantage of LED lights."
Lao Yinghai, the chairman of Le Domain Holdings Co., Ltd., who participated in the installation of LED street lights in Dongguan Shipai Town and the canopy lights of Guangfo Expressway toll booths, said: "Our lights have been installed for more than two years, and there is no maintenance yet. There is no problem with the LED. Even if the main line is bitten by the mouse, it will not affect the lighting of the whole street." He also admitted that in the LED street light, the LED chip and the lamp head are "longevity", "the only one." The problem is that our commonly known 'fire cow' has a short life span of no more than five years." He added: "But the 'fire cow' replacement is very convenient and cheap."
A document from the Guangdong Provincial Department of Science and Technology also shows that LED street lights can achieve about 7% of light decay in three years, and the theoretical life expectancy will reach 6-7 years. It is understood that at present, China's LED street lamp products can reach the life expectancy of 100,000 hours, that is, no replacement for 10 years. The traditional high-pressure sodium lamp needs to be replaced once in 1-2 years. (æŽæ™“莉刘玮å®)
11000 ç› LED street light = 598 acres of forest
Yangcheng Evening News reporter Liu Yuning, correspondent Yue Ke Xuan reported: What are the advantages of expensive LED street lamps compared with traditional high-pressure sodium lamps? The reporter recently interviewed Professor Luo Yi, director of the National Key Joint Laboratory of Integrated Optoelectronics, Department of Electronic Engineering, Tsinghua University. He believes that LED street lamps have a longer life span, better uniformity of the illuminated road surface, and are more energy-saving and environmentally friendly.
LED street lights make nights safer
When it became the pilot of LED streetlight promotion, the relevant departments of Chancheng District of Foshan received such a complaint. "The lights of the LED street lights are so white that I don't dare to go downstairs for a walk!" A lady complained faintly over the earpiece. "I told her, may ask the police to see if the city is not safe under the LED streetlights," said the person in charge, Mr. Yu. Coincidentally, this lady’s husband happens to be a policeman. Through understanding, she learned that under the illumination of LED street lights, the city safety monitoring probe can capture a clearer image. In the 110 monitoring center, the road pedestrians Faces, the license plate of the vehicle can be seen clearly.
This magical effect stems from the light distribution technology of LED street lights. Luo Yi told reporters that street lights are special lighting, because the most important thing is to illuminate the road. Conventional luminaires diverges light to various angles. In principle, it is not possible to form an ideal light distribution that only illuminates the road surface.
In addition, according to common sense, the middle light of the two street lights will definitely be relatively dark, that is, "the average is not very good." Luo Yi explained: "Since simply taking an LED lamp and a high-pressure sodium lamp, the LED does not necessarily save power compared to the high-pressure sodium lamp. However, whether the street lamp saves electricity is to be placed on the road." For example, if a certain interval is to be solved Underneath, there is a problem of dim zone between the two street lamps. It may be that the traditional high-pressure sodium lamp can reach 400 watts to illuminate, and the LED street lamp may reach 100 watts. It is understood that at present, Guangdong Province is in the forefront of the country in the light distribution technology of LED street lamps.
City lighting priority to change LED street lights
Many people have questioned that the original street lights are good. Why do you have to pay a big price for LED street lights?
In this regard, Luo Yi believes: "If the street lamp has been installed, this street lamp is also very energy-saving, then it is not necessary to change the LED street light." However, he suggested that when the city lighting project should be promoted, priority should be promoted. LED street light.
In addition, from the perspective of industrial development, he believes that government involvement and support is very necessary. "If it is confirmed that high-end LED street lights are more energy-saving and environmentally friendly, the government's intervention can drive the development of this industry." He explained that as a new thing, LED streetlights are definitely more expensive than traditional high-pressure sodium lamps. "At this time, we are the most The important thing is to consider the price/performance ratio. According to the data of the LED streetlight pilot in Chancheng District of Foshan City, the replacement of more than 11,000 LED street lamps will save more than 10 million kWh of electricity every year and save 8.9 million yuan in electricity costs, equivalent to an annual increase. 598 acres of forest.
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