Views:393 Author:Site Editor Publish Time: 2021-06-11 Origin:Site
In recent years, solar panels have gradually become the development direction of energy utilization in the future. If you are a new user of solar photovoltaic systems, it is very important for you to know something about solar panels. For most people, it's hard for them to understand how solar panels use sunlight to generate energy. Do you know whether solar panels use light or heat?
At present, there are two different solar power generation technologies on the market -- solar thermal energy and solar photovoltaic. In solar thermal technology, solar panels gather the heat of the sun and convert it into electricity. These panels are usually integrated with the hot water system. They are usually used to generate steam for turbines and household hot water systems. On the other hand, the panels in solar photovoltaic technology capture the sunlight and convert it directly into electricity through silicon semiconductors.
After hearing this, you may have a new question: both technologies sound promising. Is there any factor limiting their power generation capacity?
Solar panels rely on heat energy to generate electricity, so the power generation efficiency will be reduced in winter. The service life of the solar thermal power panel is shorter than that of the solar photovoltaic panel. According to the normal logic, the power generation efficiency of solar photovoltaic panels reaches the highest in summer. However, this is not real. The absorption efficiency of solar photovoltaic panel is not directly proportional to temperature. If the external temperature is too high, the panel surface will be excessively heated, which will affect its absorption efficiency. Although there are products like bifacial solar panels on the market, most photovoltaic panels will lose efficiency in ultra-high temperature weather.
Solar photovoltaic panels use the photovoltaic effect to obtain electricity. There are some visible light and some ultraviolet and infrared light. What people don't know is that clouds can block visible light, but they cannot block the visible spectrum. Therefore, cloudy weather will not affect the efficiency of solar panels, which also shows the reliability and durability of photovoltaic technology.
Solar photovoltaic panels are made of solar cells. The solar cell has a multilayer structure. When sunlight hits the solar cell, it causes the electrons to move from a stable position. The first layer is a protective transparent medium, which can help sunlight to pass through the silicon crystalline and protect the battery panel from damage from the external environment at the same time. The second layer is an anti-reflective coating, which is very helpful in increasing light absorption. The third layer is the most important silicon crystalline, because this is where electricity is generated. The last layer is a metal layer that can accelerate the movement of electrons.
Hope all the above information can give you a new direction of choice. If you have any questions, you can contact Luxen Solar, and we will provide you with the most professional consulting services.