The solar street light is a lighting device that uses solar energy to produce electricity. It converts solar energy into electrical energy via solar panels and then stores it for nighttime lighting. Among the solar panels of solar street lights, there are some differences between those with one solar panel and those with two solar panels.
First of all, the number of solar panels is different. One solar panel means there is only one solar panel on the solar street light, while two solar panels mean there are two solar panels on the solar street light. The main difference between the two models lies in the energy production and storage capacities of the solar panels.
Second, the areas of the solar panels are different. The area of one solar panel is relatively small, while the area of two solar panels is relatively large. LThe difference in area will directly affect the power generation efficiency and storage capacity of the solar panel. Larger solar panels can absorb more solar energy, thereby generating more electrical energy and improving the brightness and lighting duration of solar street lights.
In addition, there may be differences in the way solar panels are arranged. One solar panel is usually placed on top of the solar street light, while two solar panels can be placed on both sides of the solar street light. This arrangement can increase the receiving area of solar panels and improve the efficiency of solar energy use.
In summary, there are some differences between one solar panel and two solar panels in terms of electricity generation capacity, storage capacity, lighting brightness and duration of solar street lights. THEThe model you choose depends on your actual needs and budget. Whether it is one or two solar panels, solar street lights are environmentally friendly and energy-saving lighting equipment that can effectively use solar resources and reduce dependence on traditional energy sources , and have broad application prospects.
1 square meter of crystalline silicon solar panel is equivalent to approximately 120-140W. If calculated as 120W, the sun at 6 hours a day is 120*6=720WH. A 10W lamp depends on the number of hours of use per day and the number of consecutive rainy days it requires. If used 9 hours a day and 3 rainy days, the battery panel will be 30-50W.
The costs required according to regions, different installation difficulties, different roofs and the different installation methods are slightly different. The calculations abovessus covers common installation methods.
Principle of energy production
The solar cell is a device that reacts to light and can convert light energy into electricity. There are many types of materials that can produce photovoltaic effects, such as: monocrystalline silicon, polycrystalline silicon, amorphous silicon, gallium arsenide, copper selenium indium, etc. Their principles of energy production are basically the same. Today, crystalline silicon is used as an example to describe the photovoltaic power production process. Crystalline P-type silicon is doped with phosphorus to obtain N-type silicon, forming a P-N junction.
When light irradiates the surface of the solar cell, part of the photons are absorbed by the silicon material; the energy of the photons is transferred to the silicon atoms, causing the electrons to transitionand their transformation into free electrons. accumulate on both sides of the P-N junction to form a potential difference, when the external circuit is connected. Under the action of voltage, current will flow through the external circuit to produce a certain output power. The essence of this process is: the process of converting photon energy into electrical energy.