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What are the standards for solar photovoltaic glass? What are the materials for making glass

Sep 30,2022

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Standard for photovoltaic glass: tempered or untempered embossed glass and float glass can be used for solar photovoltaic glass. The iron content shall not be greater than 0.015%, the visible light transmittance shall be greater than or equal to 91.5%, and the direct sunlight transmittance shall be greater than or equal to 91.0%. The material of solar photovoltaic glass is quartz, which is abundant in the earth. In fact, sand is also quartz, but the quartz used to make solar photovoltaic glass must be of high purity.

Raw materials for glass production: raw materials used in the production of photovoltaic glass raw sheets include quartz sand, soda ash, feldspar, dolomite, limestone, mirabilite, etc. Among them, quartz sand and soda ash are the main components in the material input, that is to say, the quality of both determines the quality of photovoltaic glass; As for limestone, dolomite and mirabilite, the requirements are not as high as those of quartz sand and soda ash.

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What process is used to make solar photovoltaic glass?

Sep 30,2022

First, weigh the glass raw materials according to the formula requirements, and then mix them evenly. Then, use the feeder to put the batch into the glass furnace. By controlling the temperature in the glass furnace, the batch can be melted at a high temperature of about 1600 ℃. Control certain temperature requirements to make the glass complete the process of clarification, homogenization, cooling, etc., and then make the glass by calendering or float molding. It is mainly to control the iron content in the process of batching, melting and molding, so that the transmissivity of the glass can reach 91.6%, and the defects should be lower than a certain requirement.

How thick is photovoltaic glass used for solar energy?

Sep 30,2022

Generally, glass with a thickness of 3.2cm is used. (3.2cm/4cm/) The strength is tested under certain conditions: 227 grams of steel balls fall freely at a height of 1 meter, and the glass does not break Generally speaking, the light transmittance can reach 91% as long as the photovoltaic glass is professionally produced The steel degree you mentioned is also obtained under certain operation: more than 40 grains within the range of 50 * 50 are qualified

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