How much do you know about the glass panel of the PV module?
The panel glass used in photovoltaic cell modules is generally tempered glass, which has a low iron content, smooth or suede ultra-white. We often refer to glossy glass as float glass, suede glass or rolled glass. The thickness of the most panel glass we use is generally 3.2mm and 4mm, and the thickness of building-material type solar photovoltaic modules is 5 to 10mm. However, regardless of the thickness of the panel glass, its light transmittance is required to reach more than 90%, the spectral response of the wavelength range of 320 ~ 1100nm, and infrared light greater than 1200nm have higher reflectivity. Because its iron content is lower than ordinary glass, it increases the light transmittance of the glass. Ordinary glass is greenish from the edge, because the glass has lower iron content than ordinary glass. From the edge of the glass, this glass is whiter than ordinary glass, so this glass is said to be ultra-white. Suede means that in order to reduce the reflection of sunlight, the incident amount of light is increased, and the surface of the glass is made fluffy by physical and chemical methods on the surface. Of course, the use of sol-gel nanomaterials and precision coating techniques (such as magnetron sputtering, double-sided immersion, etc.) apply a thin layer of nanomaterial on the surface of the glass. This coated glass can not only significantly increase the number of panels. The transmittance of glass is more than 2%, it can also significantly reduce light reflection, and it also has self-cleaning function, which can reduce the pollution of rain, dust, etc. to the surface of the panel, keep it clean, reduce light decay, and increase the power generation rate. % to 3%. In order to increase the strength of the glass and resist the impact of wind and sand hail, we have long-term protection of solar cells. We have tempered the panel glass. Firstly, the glass in the horizontal tempering furnace heats the glass to about 700° C., and then it is quickly and uniformly cooled by the cold air to form a uniform compressive stress on the surface, and the interior forms a tensile stress, which effectively improves the bending and impact resistance of the glass. After the panel glass is tempered, the strength of the glass can be increased by 4 to 5 times than that of ordinary glass. Aluminum Alloy Handle,Aluminum Alloy Door Handle,Hardware Wire Drawing Handle,Interior Door Handle Guangzhou Junpai Hardware Co., Ltd , https://www.gdjhfurniture.com