According to incomplete statistics, the total number of street lighting lamps in Nanjing has reached 180,000 baht, most of which are high-pressure sodium lamps. The energy consumed by these lamps is amazing. If you use a new type of LED luminaire, you can save about 50 energy. Energy-efficient LED lights, the city has only one road pilot installation, what are the reasons? Who should wake up the city’s street lamp energy-saving sleep market? Recently, the reporter conducted an investigation.
The 180,000-inch urban lighting street lamp consumes an incredible street lamp and is one of the necessary facilities for the city. According to the incomplete statistics of relevant departments, during the 11th Five-Year Plan period, the city's street lamp construction has invested more than 700 million yuan, with more than 30,000 new lights installed, and the total number of road lighting has reached 180,000. Among them, about 100,000 baht is managed by the urban management department, and the unit has self-built and landscape lighting with about 80,000 baht.
According to relevant persons from the Nanjing Street Lamp Management Office, the 100,000-inch lighting street lamps that are uniformly managed by the municipal government are mostly 250-watt high-pressure sodium lamps. It is open for 12 hours a day in winter and 8 hours a day in the summer, with an average of 10 hours a day.
Due to the large number, the street lamps consume a lot of energy. With 250 watts per street lamp and 10 hours per day, 180,000 street lamps consume 450,000 kWh of electricity per day and consume 160 million kWh per year. For example, according to the calculation of 0.5 yuan per kilowatt hour, the annual electricity cost for lighting street lamps is about 80 million yuan.
If you replace the high-pressure sodium lamp with a more energy-efficient LED, what is the energy saving situation? The reporter learned that if LED lamps are used, 120-watt LED lamps can replace 250-watt high-pressure sodium lamps, and the lighting brightness is equivalent. In other words, if LED lamps are used, only street lamps can save 80 million kWh per year and save electricity costs by more than 40 million yuan.
New pilot installation of LED lamps in Jiefang Road With the rapid development of the domestic LED industry, energy-saving, environmentally friendly and green LED lamps have gradually become familiar to consumers in recent years, and have quickly entered various commercial and civilian fields. In order to test whether this kind of luminaire is suitable for urban lighting, the city also installed some LED luminaires in Jiefang Road last year. What is the actual use effect?
About 400 LED lamps were installed on Jiefang Road, but the experiment found that the existing LED lamps are not suitable for urban lighting. The person in charge of the city street lamp management office said that in the first month of the installation, the maintenance personnel found that there were five or six LED lamps damaged. In the following year, the repair rate of these LED lamps was about 20, which was much higher than the repair rate of the high-pressure sodium lamp 1. The high repair rate of LED luminaires results in high maintenance costs.
Secondly, the high price of LED city lighting is also unbearable. According to the source, at present, 6-watt residential LED lamps cost about 100 yuan each, and 120-watt urban lighting lamps are priced at more than 5,000 yuan. Although they have now dropped to more than 4,000 yuan each, they are still more than 1,000 yuan each. The price of high pressure sodium lamps is many times higher.
Compared with high-pressure sodium lamps, LED lamps are power-saving and not cost-effective. The pilot installation test can be said to be a failure. The person said.
The sleepy energy-saving market needs to wake up the reporter to understand that in some cities in the field, LED lamps have also been used as high-efficiency energy-saving representatives in large-scale promotion and use in the field of urban lighting, but the results obtained are not satisfactory.
The outstanding performance is high in installation cost and large in repair cost. According to relevant experts in the city, the survey shows that urban lighting requires high-power and stable mature lamps, and LED lamps are still immature due to some technologies. In the process of use, they will show more serious light decay. After that, the brightness of the light will become darker and darker.
In addition, in the long-term use of LED lamps, the heat dissipation function is not as stable as the high-pressure sodium lamp, resulting in damage to the lamps. At least from the current point of view, LED lamps are more suitable for personalized landscape lighting, civil lighting, and temporarily not suitable for large-scale use in the field of lighting street lamps.
China's street lamp power has always been a major city power consumer, lighting street lighting energy is also known as the sleeping market, then, who should wake up this sleeping market?
In this regard, Nanjing experts said that from the current development of the LED industry, its production costs are greatly reduced each year, and the production process is also rapidly progressing. Taking cost as an example, the cost of LED lights is decreasing at a rate of 2030 per year. With the rapid development of production technology and technology, LED lamps will become more and more perfect, and the price will be lower and lower. It is expected to gradually replace high-pressure sodium lamps. The person said.
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