Solar street lamps are pollution-free and radiation-free, in line with the modern concept of green environmental protection, so they are deeply loved by everyone. However, in addition to its many advantages, solar energy also has some disadvantages. What are the disadvantages of solar street lamps? To solve this problem, let me introduce it to you.
Shortcomings of solar street lamps
High cost: the initial investment of solar street lamp is large, and the total cost of a solar street lamp is 3.4 times that of a conventional street lamp of the same power; The energy conversion efficiency is low. The conversion efficiency of solar photovoltaic cells is about 15%~19%. In theory, the conversion efficiency of silicon solar cells can reach 25%. However, after actual installation, the efficiency may be reduced due to the blocking of surrounding buildings. At present, the area of solar cells is 110W/m ²， The area of 1kW solar cell is about 9m ²， It is almost impossible to fix such a large area on the lamp pole, so it is still not applicable to the expressway and trunk road.
Inadequate lighting demand: too long a rainy day will affect the lighting, resulting in the illumination or brightness failing to meet the requirements of the national standard, or even failing to light up.In some areas, the lighting time of solar street lamps at night is too short due to insufficient illumination in the daytime; The service life and cost performance of components are low. The price of the battery and controller is high, and the battery is not durable enough. It must be replaced regularly. The service life of the controller is generally only 3 years,Due to the influence of external factors such as climate, the reliability is reduced.
Maintenance difficulties: the maintenance of solar street lamps is difficult, the quality of the heat island effect of the panel cannot be controlled and detected, the life cycle cannot be guaranteed, and the control and management cannot be unified. Different lighting conditions may occur; The lighting range is narrow. The solar street lamp currently used has been inspected by the China Municipal Engineering Association and measured on the spot. The general illumination range is 6~7m, and it will be dim beyond 7m, which cannot meet the lighting requirements of the expressway and the main road; Environmental protection and anti-theft problems. Improper handling of batteries may cause environmental protection problems. In addition, theft prevention is also a major problem.
The above shortcomings of solar street lamps are shared here. In addition to these shortcomings, solar street lamps have the advantages of good stability, long life, high luminous efficiency, simple installation and maintenance, high safety performance, energy conservation and environmental protection, economic and practical, and can be widely used in urban main and secondary roads, residential areas, factories, tourist attractions, parking lots and other places.
Post time: Jan-13-2023
