The ongoing advancements in solar power generation technology have made solar street lights increasingly popular in the urban road lighting sector, thanks to their eco-friendly and energy-efficient benefits, presenting significant market opportunities. Regarding energy conservation, solar street lights do not utilize traditional electricity. Conventional street lights contribute to 30% of the overall lighting power consumption in the country. What are the best methods to enhance lighting effects during the installation of solar street lights? Let us examine the issue presented below.
Choosing the inclination angle of a solar panel for solar street lighting
The optimal inclination angle aims to enhance the power generation of solar panels for street lights while reducing the disparity in power output between winter and summer.
Generally, when the local size or latitude is increased by a few degrees in relation to the inclination angle of the solar cell module installation for local solar street lights, there is a notable difference in horizontal solar radiation between winter and summer at high latitudes.
When the cell is designed based on the horizontal radiation parameter, its storage capacity during winter will be excessively large, resulting in a rise in both the design capacity and the investment required for the cell.
Choosing a more optimal inclination angle results in a smaller difference in radiation on the solar cell panel between winter and summer. This adjustment can also lead to a reduction in cell capacity, ultimately lowering the overall cost of the solar street light system and enhancing the design's efficiency.
Choosing the azimuth angle for solar cells in solar street lighting
The azimuth angle of the typical solar street light is usually oriented towards the south, allowing the solar cell panel to produce a significant amount of power in a given time frame. When installing a solar street light on a roof, slope, mountainous area, building structure, or in shadowed locations, it is essential to maximize the use of the existing terrain and available space. This approach helps to mitigate shadows from nearby buildings and trees, ensuring that the light conversion efficiency remains optimal.
Choosing the angle and area of the solar cell for a solar street light
During the summer in the northern hemisphere, provided conditions allow, if the angle is southwest at 20° within ±20° to the south, it will not significantly affect power generation, resulting in the peak of solar power generation occurring after noon. Winter offers a variety of optional angles. If the solar cell area on the south side is insufficient, you might want to think about positioning the solar cell panels in an east-west orientation.
