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Types and characteristics of smart glass greenhouse glass
The commonly used covering material in multi-span smart glass greenhouses is glass, which is divided into tempered diffused glass and ordinary glass. Tempered diffused glass forms a compressive stress on the glass surface through physical methods. When the glass is subjected to external forces, it will offset the surface stress, thereby increasing the load-bearing capacity of the glass. Tempered diffused glass has the characteristics of high strength and toughness. And the thermal stability is very good. The tempered diffused glass can see colored fringes through the polarizer and the edges. In the process of building glass greenhouses, we usually use tempered diffused glass on the top. When the surface of the glass is subjected to external forces, the glass will break into small particles and will not cause harm to the human body.
From the appearance point of view, glass is divided into float glass and ultra-white glass. Ultra-clear glass is a glass with high light transmittance and very low iron content. Ultra-clear glass has less impurities and is not easy to explode. The light transmittance of ordinary glass is about 86%, while the light transmittance of ultra-white glass can reach more than 92%. Venlo glass greenhouses like the Netherlands mostly use this kind of ultra-white anti-reflective glass. Ultra-white anti-reflective glass can maximize the light required by plants in the greenhouse, improve the photosynthesis of crops, and thereby increase productivity. After the light passes through the anti-reflective glass, the sunlight is evenly irradiated in the shed, which can avoid direct sunlight to burn the crops, and there is no shadow in the shed, so that the light is more uniform. Because of the high cost of ultra-white glass, the glass used in most greenhouses is ordinary tempered glass or tempered diffuse reflection glass, which will appear to the naked eye with a faint green.
In terms of specifications, glass is divided into single-layer glass and hollow glass. Insulating glass has the effects of heat insulation, heat preservation and sound insulation. It is precisely because of these characteristics that it is widely used in greenhouses around the greenhouse. Some special greenhouses will be used for aesthetics and special requirements. For coated glass, Yuhua diffused coated glass is commonly used.
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