The difference between insulating glass and vacuum glass

Vacuum glass is to seal the two sheets of flat glass, leaving a gap in the middle, vacuuming the gap and sealing the vent. The inner surface of the two sheets of glass is plated with one or two transparent low-emission films. The insulating glass is called "hollow" and is not vacuum. There is "gas" in the middle of the two layers of glass. In most cases, "qi" is air, and the better quality is argon. Since the gas is not visible to the naked eye, it is said to be "empty". The vacuum glass is used to draw a "vacuum" between the two layers of glass. Basically, it can be said that there is no gas, and it is really empty.

In contrast, the function for the vacuum glass is superior than the insulating glass. Vacuum glass has excellent thermal insulation properties. It is used as window glass to make the winter room warm and the indoor heating is not easy to be lost which reduces the cost of heating and air conditioning and saves energy. Air conditioning is used indoors in summer and is not easy to escape. Sound insulation is better, preventing noise interference and creating a quiet environment. In addition, in the winter, even if the outdoor temperature is very low, it is difficult to condense on the side of the window glass interior which ensures a clear view and does not require frequent cleaning of the dew condensation glass.

Another feature of vacuum glass is that it is much thinner than insulating glass, saving installation space and window frame material. At the same time, due to the good thermal insulation function, its anti-condensation and fogging performance is also very good, which can avoid the unpleasant appearance of the condensation on the window and the invisible appearance of the dew on the window sill. In winter, you can reduce the feeling of coldness in front of the window and the feeling of “surface wind” under your feet.

The wind-resistant strength of vacuum glass is about twice that of insulating glass made of the same glass, but the impact strength is not as good as insulating glass. This weakness can be solved by combining vacuum glass. For example, in the required position, laminated glass technology can be used to add tempered glass to one side or both sides of the vacuum glass to form a safety vacuum glass with high impact strength and wind pressure resistance. Undoubtedly, this cost will increase accordingly.