The promotion of solar LED street lamps should be appropriate to local conditions

Ten "city lights" reference 15 period published "on the LED solar light application" such as the number of articles about the solar LED street lamp of the article, has a different understanding and view of the case and point of view, we discuss together with you.

This paper enumerates some examples for application of solar LED street lamp, the first is the November 2010 Chongqing Dazu County Yingbin road length of 4.3 kilometers, the investment of more than 1700, with a 20 year operation period and annual saving 870 thousand kwh in 300 sets of automatic tracking type flat plate solar LED street lights opened across the board. From the above examples described in the analysis, the main road is 6 Lane Road and above, street lamp is installed on both sides, a distance of 30 meters, 10 meters high in the lamp, the lamp at the cost of more than 56 thousand yuan, the other from the above data can be analyzed without solar LED lights using high-pressure sodium lamp. The lamp should be installed power of 600 watts (870 thousand kwh / (4150*300*1.1 (ballast loss) *1.05 (transmission loss) =0.605 kW), then analyze, simple operator accounts, if all according to the construction cost of sodium, the construction cost of 4 million 500 thousand yuan (300 sets of lamps, light source can only be calculated by 400 sodium or violation of design standards, each lamp 15 thousand yuan, including construction, materials, machinery, installation and distribution, distribution according to the near no low voltage transformer), each lamp with the corresponding operation and maintenance cost of 300*200=6 million (each The lamp 200 yuan, in Jiangsu is high level), the annual operating cost of 300*4150*1.1*1.05*0.4*0.53=30.485 million yuan, for operation and maintenance (1700-450) / (6+30.485) =34.26 years (even by 0.66 yuan per kilowatt electricity cost calculation, there are 28 years), far more than the 20 year plan period (actually built before operation after 2-3 years of maintenance can be ignored), which is 20 years to replace the LED, replace the battery, controller and patrol inspection repair operation and maintenance cost is not included (solar LED not maintenance free, is to place large maintenance costs, behind the article will talk about specific). What's more, this is more than 12 million 500 thousand of the funds invested in accordance with the compound interest calculation, the cost will be higher in the economy is very uneconomical. In addition, from the understanding of this in the case of Yingbin Road literally, should be the main road or expressway, from the current situation of the city, should be 6 lanes or more, the installation height of 10 meters, should be adjusted to 12 meters distance of 35~40 meters, the number of lights used 4.3 kilometers on the road will be reduced 20%~30% than it is now, the cost of the project, electricity and maintenance fees will be less, the price will be higher. Conclusion 1: the construction site is Chongqing, according to China's solar region, the whole of Sichuan belongs to the annual sunshine hours less than 1600H sunshine poor area, not suitable for installation of solar street lamp (though this may be the reason for the automatic tracking type flat solar energy); conclusion 2: here the road at the installation of solar LED street lamp the price is too low, if you count the cost of operation and maintenance, from the point of cost is not necessary to install.

"Article ten city lights" published in reference 15, also cited the National Street all using solar LED street lamps can be saved every year a dam's bright prospects, are listed on the solar LED street clean no pollution, energy saving, money saving, maintenance free advantages, also listed on the high sodium the short life of the shortcomings such as point of view, similar to the above part view at this stage not following the above point of view, talk about their own views:

, the occurrence and development of things, exit has its objective law, there is a corresponding process.

Solar energy is one of the most direct the most clean energy, solar energy is a huge amount of renewable energy, each day to reach the earth's surface radiation can be approximately equal to 2.5 millions of barrels of oil, can be said to be inexhaustible. LED has a long life, energy saving and so on, from a technical point of view of idealism, it is indeed a very attractive technology, its application prospect to us as you can simply use the "perfect" to describe: one-time investment, long life and low maintenance cost of the LED lamp no electric cable laying cost, can not like planting trees as convenient geographical restrictions, no electricity costs, inexhaustible energy and no pollution etc.. But not to say that the above-mentioned advantages will immediately instead of the light source of energy other incandescent lamps, since nineteenth Century to prohibit the use of the invention today has experienced more than and 100 years of time, although the disabled, but will also exist for a long time. Do not use mercury lamp from invention to also have a short time, they appear longer and mature after a long time in the coexistence of high pressure sodium lamp, indicating the occurrence and development of things, exit has its objective law, there is a corresponding process, such as LED, solar energy, and its dissipation still exist standard, pollution, and cost, low conversion rate of many unresolved bottlenecks in technology maturity, can not be compared with the sodium lamp and other forms of energy, even with the support of the government, what about all the place? As a growing youth and even the strong, can not compete with an adult man. Solar and other related energy, high-pressure sodium lamp and LED and other possible next generation light source such as electrodeless lamp, energy-saving lamps and other nano may coexist in a quite long period of time, to play their respective roles in their respective areas of expertise. With the development of technology, some of the energy sources and the light source or gradually replaced, quit the stage of history, but this is a process, not take it for granted short or instantaneous.

Two, objective look too