Ningbo Ningbo City Lighting is the general term for urban functional lighting and landscape lighting. It refers to the general term for lighting to brighten the city, facilitate the life of the citizens, and beautify the city, commercial propaganda, and enrich the night view of the city. Urban lighting is not only an extension of the expression of urban landscape, but also a display of individualized historical culture and natural features of the city. It helps to promote the prosperity of urban commerce and tourism, improve investment and living environment, and reflects the economic and civilized level of a city. Important sign. At present, with the rise of green environmentalism on a global scale, the green concept has gradually introduced urban lighting systems in developed countries, and green lighting has become an inevitable development trend of urban lighting.
First, the importance of green lighting in the development of urban lighting. The so-called "green lighting" refers to the introduction of green energy-saving concepts into urban lighting construction, the realization of economic savings in urban lighting, and the coordinated and sustainable development of environmental protection. It is a new concept that conforms to the concept of sustainable development. It was first proposed by the US government in the year and has been widely accepted by developed countries around the world and widely adopted in urban lighting. The concept of green lighting has also been introduced in the new national standards issued by China in the year. Its value is mainly reflected in the energy conservation and public finance expenditures. The Outline of the Eleventh Five-Year Plan for National Economic and Social Development proposes that the energy consumption per unit of GDP in China will decrease during the 11th Five-Year Plan period. It is clearly stated that “the cumulative power saving will be reached in the next yearâ€.
According to the data of the national authoritative department, the brightness of many cities in China is seriously exceeding the standard. Some of them are unreasonable due to the unreasonable configuration of light sources and lamps. As a result, the illumination exceeds the standard to some times. Some lamps have serious astigmatism, and even less than the light shines on the road. Less than the above standards for the light efficiency requirements of the Ministry of Construction, energy waste and light pollution are serious. Statistics show that urban public lighting accounts for about the electricity consumption of China's lighting, accounting for the total power generation in the country, reaching 100 million yuan. Calculated by the average electricity price, the annual expenditure is as high as 100 million yuan, which is equivalent to consuming the current annual power generation of the Three Gorges Power Station. the amount. It can be seen that solidly promoting the construction of urban green lighting is conducive to saving a lot of valuable energy, alleviating the current power shortage, saving public finances, promoting the construction of a conservation-oriented society, and promoting comprehensive and sustainable economic and social development.
Second, reduce urban lighting light pollution Currently caused by urban lighting, light pollution has become a prominent problem affecting the night environment. It is estimated that one of the light pollution is produced by road lighting. The effects of light pollution are mainly reflected in the following aspects: the impact on the night sky. For example, the Purple Mountain Observatory of the Chinese Academy of Sciences was “invaded†by light pollution, and the night observation of the observatory was almost completely ruined. The Greenwich Observatory in England was also plagued by light pollution in recent years.
The second is the impact on traffic safety. The glare of urban lighting glare makes the driver feel nervous about driving, which is easy to cause judgment errors and become a predisposing factor for urban traffic accidents. Due to the light pollution near the airport, it is not uncommon for the road to be mistaken as a runway.
The third is the impact on human health. Modern medical research shows that artificial white mites easily break the normal physiological laws of human beings and affect their health to a certain extent. According to a survey in Germany, urban people report that “urban public lighting affects their own sleepâ€. In addition, nighttime urban lighting affects plant growth, which can lead to plant dysfunction and slow growth. Three protection of human living environment At present, most of China's urban lighting is derived from electricity supply, and many power plants are derived from the burning of coal, oil, natural gas and other resources. Therefore, urban public lighting indirectly consumes a large amount of oil, natural gas, coal, etc. Nonrenewable resources. In particular, China's power system is currently mainly based on coal-fired thermal power generation. Coal is a highly polluting energy source and is the most destructive to the environment. Promoting urban green lighting, while saving energy, also means reducing the damage to the living environment of the gate. Second, the status quo of Ningbo's green lighting development and the main problems that exist are also need to be gradually changed. One of the problems is that the running costs are huge and cost a lot of money.
At present, there are a total of street lights in the old three districts of Ningbo, the total power of the lights is, and the landscape lights are numerous, accounting for the total. “Lighting engineering†requires high operating costs.
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