16 What are the main types of mature coating glass processes?

There are two main types: online coating and vacuum magnetron sputtering coating (also called offline coating). Online coated glass is manufactured on a float glass production line. This kind of glass has a single variety, poor heat reflection performance, and low manufacturing cost. Its only advantage is that it can be hot-bent. Coated glass manufactured by vacuum magnetron sputtering process has rich varieties, excellent heat reflection performance and obvious energy-saving characteristics. The disadvantage is that it cannot be hot-bent.

17 Can Low-E glass be used as a single piece?

Low-E glass manufactured by the vacuum magnetron sputtering process cannot be used as a single piece and can only be synthesized into insulating glass or laminated glass. But its emissivity E is far lower than 0.15 and can be as low as 0.1 or less. Low-E glass manufactured by the online coating process can be used as a single piece, but its emissivity E = 0.28. Strictly speaking, it can no longer be called Low-E glass (scientifically, an object with an emissivity E £ 0.15 is called low emissivity object). Low-E glass is most effective in a similar enclosed space formed within sealed insulating glass, because this enclosed space eliminates air flow on the Low-E surface, allowing Low-E glass to function better.

18 Does Low-E glass perform the same?

From a technical perspective, all Low-E glasses handle spectral curves in the same way, but not all perform the same.

19 Do all Low-E glasses look the same?

no the same! Some Low-E products appear to be highly transparent, with transmittance above 60% and light color. Some Low-E products appear to have low transparency, with a transmittance below 55% and a relatively darker color.

20 Does Low-E glass still work at night?

yes! Low-E glass works day and night. In winter, heat (far-infrared thermal radiation) will be reflected back into the room day and night, because the heat, whether generated by heating or converted from solar energy, exists in the form of far-infrared thermal radiation.

21 How does Low-E glass work in summer and winter?

In winter, the indoor temperature is higher than the outdoor temperature, and far-infrared heat radiation mainly comes from indoors. Low-E glass can reflect it back into the room to prevent indoor heat from leaking out. Low-E glass can still allow part of the solar radiation from the outdoors to enter the room. This part of the energy is absorbed by indoor objects and then converted into far-infrared heat radiation and remains indoors.In summer, when the outdoor temperature is higher than indoors, far-infrared heat radiation mainly comes from the outdoors. Low-E glass can reflect it out and prevent heat from entering the room. For solar radiation from outside, you can choose Low-E glass with a low shading coefficient to limit its entry into the room, thereby reducing cooling costs (air conditioning costs).

22 Which surface of insulating glass is most suitable for Low-E coating to be placed on?

The insulating glass has 4 surfaces, the numbers from outdoor to indoor are 1#, 2#, 3# and 4# respectively. In areas where heating demand exceeds cooling demand (northern region), the Low-E film layer is located on the #3 surface. On the contrary, in areas where the cooling demand exceeds the heating demand (southern region), the Low-E film layer should be located on the #2 surface.

23 What is the function of filling argon gas in insulating glass?

Argon is an inert gas with poorer heat transfer than air, so filling it into insulating glass can reduce the U-value of insulating glass and increase the thermal insulation of insulating glass. For Low-E insulating glass, argon also has the function of protecting the Low-E film layer.

24 What are the negative effects of UV rays?

Ultraviolet radiation is short-wave radiation, invisible to the naked eye, and accounts for approximately 2% of the total energy of solar radiation. Ultraviolet rays can kill bacteria, but long-term exposure can burn human skin and eyes, and can also cause furniture and clothing to fade.

25 How much UV rays can Low-E glass attenuate?

Low-E glass reduces UV rays by 25% compared to ordinary single piece clear glass. Low-E glass reduces UV rays by 14% compared to heat reflective coated glass. Low-E glass cannot completely prevent furniture from fading, but it can slow it down.

26 What impact does Low-E glass have on indoor plants?

It has no adverse effects on most common plants. For the effects on special rare plants, please consult the relevant flower experts.

27 Do sunshades, trees, awnings, etc. affect the performance of Low-E glass?

These objects can limit the heat and light entering the room through the glass window, which blocks part of the solar energy from transmitting, but does not affect the performance of Low-E glass.

28 Which direction is best to install Low-E glass?

In winter, no matter which direction the Low-E glass is facing, it will not affect its function, because it mainly reflects indoor heat. But the installation effect facing north is the best. After all, while Low-E glass prevents indoor heat loss, it also limits solar radiation to some extent.In summer, Low-E mainly reflects outdoor heat, so installation in any direction is suitable, but installation in the east, west, and south directions has the best effect because it can also reduce the transmission of solar energy.

29 How long does the Low-E coating last?

The duration of the coating layer is the same as the duration of the sealing of the insulating glass space layer.

30 What are the effects of combining Low-E glass with tinted glass?

There are three combination methods: coating low-E film on tinted glass, synthesizing insulating glass with tinted glass, and laminated glass with tinted glass. Tinted glass can further reduce the shading coefficient of the combined glass product, thereby limiting more direct solar radiation from entering the room. Therefore, the combination of these three methods has very good results and is more suitable for use in the temperate and tropical areas of the south. Its decorative effect can also be greatly increased when combined with tinted glass.