Vacuum glazed windows in Plateau area
Due to the low air pressure in the plateau area, the insulating glass produced in the plain area cannot be directly used, capillary tubes must be added to keep the air balance. In addition, since the U value of insulating glass will increase significantly when it is installed horizontally, it is not suitable for sunroom &conservatory. Vacuum insulating glass solved these problems, vacuum glazed windows is the best choice for passive house doors and windows in plateau areas.
Wide application, especially suitable for plateau areas
High altitude and low pressure are the characteristics of plateau areas. Average altitude of the Qinghai-Tibet Plateau is 4000m, the pressure is 25kPa lower than that in Beijing. Insulated glass produced in plain area ,when installed in the plateau areas,there will be a 2500kg pressure per sqm, which is very easy to cause the air expansion&glass breakage.
During transportation to high-altitude roads, the pressure difference on insulating glass will continue to change, which is more likely to cause glass to break .
Since the vacuum glass contains vacuum space,which is not affected by the air pressure, whether in transportation or installation,there is no glass deflection and breakage concerns.
Extreme low thermal insulation property,whether it’s horizontally or vertically.
Because of heat convection inside insulating glass,glass thermal transfer is greatly increased when it’s installed horizontally.
U value of triple glass units increased from 0.67 W/(m2·K) to 0.97 W/(m2·K) when it’s installed vertically and horizontally.
The U value of the vacuum glass has basically remained unchanged bcs no air inside .
Learn more:Vacuum Glass U value analysis
Low U value,and will be better.
HaanGlas newest vacuum insulating glass has an 0.47W/M2.K U value,and when been made into hybrid VIG,the U value can be further decreased,below table shows that hybrid VIG U value can reach 0.35W/M2.K.
|VIG Option||VLT %||SHGC||U-SUMMER||U-WINTER|
|10.3 D80 VIG||70||0.38||0.50||0.47|
|6D80+12AR+8.3 D80 VIG||53||0.31||0.39||0.36|
|6 T70+12AR+8.3 D80 VIG||52||0.22||0.39||0.36|
VIG can not only reduce building energy consumption, but also prevent condensation. Vacuum glazed windows can reduce the frame-to-window ratio,increase the light transmittance of the entire building while keeping the U value unchanged.
Thin glass,and will be thinner.
VIG thickness is far smaller than triple glass units,windows overall thickness can be reduced effectively,and decrease building load.
Thinner vacuum glazing also enables light weight windows frame and decrease overall costs when keeping good thermal property.
The strong ultraviolet radiation in the plateau area makes the sealant on the edge of the insulating glass easy to fail,VIG is sealed with inorganic materials and does not contain organic glue materials. In harsh environments such as high temperature, low temperature, high humidity, and ultraviolet radiation, there will be no problems such as performance degradation and aging failure.
Good soundproof performance.
The sound insulation of composite vacuum glass can reach 41dB, effectively block traffic noise in low and medium frequency bands, which enhances its practicability in blocking life noise.
China’s vacuum glass industry ranks in the forefront of the world in terms of patented technology, industrialization level, promotion and application.
HaanGlas has developed the world most advanced vacuum glass products with much better VIG price,and applied in passive house windows,which can effectively contribute to the energy saving.