First and foremost, all three are attributed to "multi-layer glass." Its structure includes: double glass, vacuum glass, and hollow glass.
The so-called double glazing is to replace the single glass on the traditional doors and windows with two pieces of glass, because the air layer between the two pieces of glass is not sealed with a useful sealing material, and then it causes a lot of dust and moisture to enter into the glass. Between the two pieces of glass, double glazing is therefore a product that is regulated in construction.
The so-called vacuum glass, as its name suggests, is the vacuum state between the two glass sheets, and then greatly reduces the thermal conductivity of the glass product; but because the vacuum glass production process is very complicated, it can not complete the large-scale industrial production, and the price is As a result, it is rarely used in ordinary dwellings.
The so-called hollow glass is sealed and separated from the data by two pieces of glass sealed with useful sealing materials, and a desiccant that absorbs moisture is installed between the two pieces of glass, and then the interior of the insulating glass is ensured to be a dull air layer for a long time. The presence of waterless gas and dust; hollow glass is easy to produce in large quantities in industrialized production, so hollow glass is a product that has been introduced and selected by many in the new construction.
Difference between laminated glass and hollow glass
1. Sandwich (glass) glass is a layer of PVB center film sandwiched between two glasses. Even if the glass breaks, the pieces will be stuck on the film, and the broken glass will still keep its appearance clean and lubricated. This helps to avoid the onset of fragmentation and penetrating fall and ensure personal safety.
2. Between the glass and the glass of the insulating glass, there is a certain cavity. Therefore, it has excellent functions such as heat preservation, heat insulation and sound insulation. Such as the glass filled with a variety of diffuse light data or dielectric, etc., you can get better sound control, light control, heat insulation and other effects.
The difference between insulating glass and general double glass
Hollow glass is composed of two or more pieces of flat glass, the surrounding is separated by a distance frame, and sealed with a sealant so that the glass layer constitutes a glass deep processing product with a boring gas space. The need to note that the edge of the insulating glass is tightly sealed with a sealant, the hollow glass cavity is filled with dry air or inert gas, this part of the gas is sealed in the cavity for a long time, can not convection with the outside air, so The heat of the two ends of the insulating glass will not take away heat due to the convection of gas between the glass. On the other hand, air is a poor conductor of heat, and two layers of glass separated from each other by a sealing gas have little heat conduction with each other, and then they have an excellent heat insulation effect. In addition, when there is a large temperature difference between the two ends of the hollow glass, because one glass only touches one side of the temperature, the two surfaces of the single glass will not have a large temperature difference. Therefore, when the temperature difference in the hollow glass surface is not particularly large (≥100°C), no frosting or condensation will occur. In addition, there is a need to clarify that hollow glass is not vacuum glass, and the pressure of the gas in the hollow glass is basically consistent with the outside world, otherwise it is very simple to form a broken glass.
After the above explanation, we can know that there is a substantial difference between insulating glass and general double glass. The most substantial difference between the two is the former seal, which is not sealed. It is because of the unsealed double glass that the dust and water vapor enter the glass cavity very simply. When the water vapor meets the cold, the condensation of the heat, the dust attached to the glass surface cannot be permanently eradicated, and the device will soon be used. The glass in the windows is vague and dirty. Of course, double-glazed glass can also play a certain degree of sound insulation (the term "soundproofing" is supplied by professional encyclopedias) and heat insulation effect, but its function is very different from that of insulating glass.
The difference between insulating glass and double glass
Hollow glass is a combination of two or more pieces of glass. The space between the glass and the glass is sealed off by the sealant. The inside is air or other special gas. Insulating glass has excellent thermal and acoustic insulation and is much lighter than brick or concrete walls. With regard to building energy-saving requirements, insulating glass is widely used for its superior functions that cannot be replaced.
The function of double glass and hollow glass together has outstanding features: excellent heat insulation, sound insulation, heat preservation, anti-condensation, cold radiation and safety functions, and energy saving are the first choice for energy-saving glass.
Hollow glass has the functions of heat preservation, energy conservation, sound insulation, and frost protection. Even if the outdoor temperature is below -30°C, and the room temperature reaches 18°C, the relative humidity (the term "Relative Humidity" is supplied by the Encyclopedia of Professionals) reaches 85% or more, and there is no frost in the mezzanine to affect the visual field and lighting.
Generally the double glass and the hollow glass have a substantial difference. The biggest difference is that the perimeter of the two layers of glass is generally not sealed. This will cause the air in the layer to have a certain humidity and convection with the outside (indoor and outdoor) air. Convection in the air between the air in the room surface and the glass sandwich will form condensation and frost, which will affect the visual field and lighting. When the temperature rises and the glass surface becomes frost, the water forms in the lower part of the interlayer. Second, suspended particles and dust in the air can be brought into the sandwich to adhere to the surface of the glass when convection in the sandwich surface cannot be avoided. Over time, it will contaminate the inner surface of the glass sandwich and make cleaning difficult. Generally double glass has two advantages: First, the price is cheap; Second, under the same standards and conditions, the general double glass heat transfer can be slightly lower than the insulating glass, is conducive to insulation and warmth.