1, in the case of light penetration, indoor heat transfer is divided into two parts, one is heat exchange, and the two is infrared in the sun. The glass manufacturer said the ultimate solution is low-E hollow glass. The silver film of low-E can reflect the infrared greatly, and the hollow part obstruct the heat exchange. The above two points can be extended for a long time. Here we only talk about the principle.
Specific to the fruit shop, he is certainly low-E tempered glass, can understand the bonding of two or more pieces of steel for special glue low-E glass.
Why do you choose, my understanding is: low-E reflection infrared (not ultraviolet, not ultraviolet, not ultraviolet); increase the strength and safety of toughened glass (taking into account the broken glass case); the overall strength enhancement (multilayer laminated toughened laminated reaches a certain thickness and strength is bulletproof glass); why not hollow and curtain wall components, or forced too low, too much attachment (not hollow result is that it is still very hot, because of the heat exchange channel without blocking).
In addition: a little missed, according to the data found by Jiahao Lu, the fruit store is using semi steel, not all steel, which is the same as the front windshield of the car.
2. Ultra white glass and low-E are not incompatible
Necessary conditions for manufacturing of ultra white glass is quartz sand iron content is low enough (Fe2O3 = 0.008%) (here thank you
@ Liu Yuanyuan
Criticism and correction!) The main use of ultra white glass is solar panels. If the amount of iron is high, the glass will be green and the transmittance will fall.
At present, the low-E board in China claims to use ultra white glass, which is not true, but it is much better than the traditional floatation. In principle, low-E and low-iron are not conflicting:
Low-E, Low emissivity, Low-E glass, is a strong reflection of infrared radiation with the coating material for the demands (can refer to hot water flask, rescue blanket) functional glass, divided into low-E online and offline low-E, respectively in the coating materials of internal and external surface of the glass. This ultra white glass low iron does not conflict.
3、关于屏幕反光的问题，改变玻璃并不能改变这一点儿，so be it!
3, on the screen reflection problem, change the glass and not change this, so be it!
Or can there be a little change in the wool glass?
4. Why the glass in the fruit shop is expensive
Just now, I talked about so many technical problems. No matter what kind of technology it is, it can't make its high price glass reach the high price level. The only factor that can bring it to such a high price is size, size and size.
If the glass size reaches a certain size, the breakage rate will be very high when the floatation line is cut through the pipeline.
The vacuum chamber of the off-line low-E coating line must be larger than the glass size, and the cost is very high and can easily break through the billion
The laminated glass autoclave must be greater than the size, cost, my dear...
The size of the tempering furnace.
Finally, the size of the glass must be customized, and the cost will rise again.
Author: know the net friend