The thermal conductivity refers to the heat transferred through the area of 1 square meter under the condition of stable heat transfer, with the temperature difference of 1 degree (k or ℃) on both sides of the material with a thickness of 1 m. The unit is w / (m · K), where k can be replaced by ℃. It is an inherent property of the material. The value of heat transfer coefficient K refers to the heat transferred per unit area per unit time when the temperature difference between the two sides of the enclosure is 1 degree (k or ℃) under the condition of stable heat transfer, and the unit is watt / (m2·degree) (W/m2·K, where K can be replaced by ℃), reflecting the strength of the heat transfer process.
Both K value and U value are refer to the heat transfer coefficient, In China's building energy efficiency standards, the heat transfer coefficient is generally expressed by K value, while in European Union EN/ISO standard system and American ASHRAE standard system, the heat transfer coefficient is expressed by U value. Therefore, the two are just different symbols and the meaning is the same. they are different in numerical value due to the different boundary conditions used in calculation or test.
Minimum size 300 mm × 300 mm, maximum size 2800 mm × 1800mm, only flat vacuum glass.
Pillar. And the height is about 0.15 mm and the diameter is about 0.6 mm. It plays a supporting role and prevents two pieces of glass from sticking together under atmospheric pressure.
Protective cap. in the process of vacuum glass production, the internal cavity is pumped into a vacuum state through the exhaust port. When the vacuum degree is reached, the sealing piece is used to seal it, and then the protective cap is used to protect the sealing piece.
The vacuum glass is sealed with inorganic non-metallic materials, so there is no aging problem. Coupled with high-temperature exhaust technology and unique getter technology, the service life of vacuum glass can be ensured to be 25 years or even longer.
Vacuum glass has good thermal insulation performance, which is very effective in anti- condensation. For example, when the room temperature is 20 ℃ and the humidity is 65%, the surface of insulating glass begins to condense when the outdoor temperature is below 1.6 ℃, while the vacuum insulating glass is below - 35 ℃. The service life of vacuum glass can reach 25 years or even longer. There will be no condensation after two years. In order to anti- condensation on the window frame, please consider using the window frame with high thermal insulation performance at the same time.
Yes, we can. The weighted sound insulation of single vacuum insulating glass can reach 39 dB, and the composite vacuum insulating glass can reach up to 42 dB. It is better to use with the window frame with good sound insulation..
No, it is the same as ordinary glass.
Professional construction personnel are required for installation. please contact the dealer or manufacturer for details.