Questions about low e glass(II)

1 To face which orientation is better for the low e glass?
No matter to which orientation that the low e glass faced, it won’t affect its function. In Winter, the low e glass mainly reflect the heat radiation towards indoor which indoor produced, in Summer, the low e glass mainly reflect the heat radiation towards outdoor which from solar direct radiation and outdoor environment, so any orientation is suitable for the installation of low e glass. In the northern hemisphere, there is almost no solar direct radiation, but there is still horizontal infrared radiation in the Summer which from the environment, then the low e glass could still have effect.

low-e-glass-insulated-glass-sealing

2 How the low e glass take effect in Summer?
In summer, the outdoor temperature is higher than indoor, the far-infrared radiation from the environments is mainly from outdoor, the low e glass could reflect it to stop the heat from entering the indoor. For the solar direct radiation from outdoor, the adumbral type low e glass could reflect it mostly, then lower the cost for air conditioning and refrigeration.

low-e-insulated-glass

3 How the low e glass take effect in Winter?
The indoor temperature is higher than outdoor in Winter, the far-infrared radiation is mainly from indoor, the low e glass could reflect it back to indoor, then keep the heat indoor from leakage. For the solar radiation which from outdoor, the traditional low e glass could let it into indoor without preventing, this heat will be absorbed by indoor objects, then change into far-infrared radiation and keep it indoor, then save the cost for heating.

low-e-insulated-glass-windows

4 How long is the life-span for the low e glass film?
To consider the energy saving effect, almost all the low e glass is made into insulated glass. The low e glass film is in the inner air space, then the life-span for low e glass film is the life-span for low e insulated glass. Because inner air space for the qualified insulated glass is very dry, its dew point is ups to -40℃, that means the steam is rarely and start to have dew when the temperature for inner surface is ups to -40℃. Under such conditions, the low e glass film is stable. The life-span for low e glass film is same as the duration of the sealing period for air space part, in a short word, it is same as the life-span of insulated glass. This have been demonstrated by the application experience home and abroad. In application, the color changing for low e glass film, the corrosion of low e glass film, mainly because the imperfect sealing and the steam entered the glass.


Post time: Aug-22-2022