Attractive glazed facades are not uncommon these days. To create them, the architects have introduced many innovations. The cold facade consists of a glass panel that forms the outer layer. The function of thermal insulation is assigned to the structure of the building wall. Glass panels are fixed to the wall with an air gap.
Exhaust facade is formed by two layers – a glass unit and glass. The glass is installed with a gap of 150-200 mm from the glass unit. The gap is used either for ventilation of the premises and for air exhaust, or for heating the incoming air..
Structural glazing combines ceramics, glass and metal in one structure. This became possible with the advent of adhesive silicone sealants. This method creates an all-glass, sleek, attractive façade..
Structural glazing requires well-coordinated work of designers, architects, glass and insulating glass manufacturers, manufacturers of silicone sealants and metal profiles..
When choosing the design of a double-glazed window, take into account the location of the building and its purpose. If the choice is made correctly, you can count on keeping the premises warm. Manufacturers have taken care of a wide range of special glasses. But without the advice of a specialist, it is very difficult for a consumer to navigate the variety of brands and types..
Today, every student knows that the main heat loss (two thirds) occurs due to thermal radiation of long waves. About a third of the heat is lost due to convection and heat conduction. Double-glazed windows help to optimally solve the problem of convection and thermal conductivity. But it should be remembered that the gap between the glass panes should not be more than 16 millimeters. If the gap is increased, convection processes will nullify the insulating properties of the glass unit.
To improve the performance of losses from thermal radiation, manufacturers produce low-emission selective glasses that are covered with a protective layer. Today k-glass and i-glass are produced. I-glass has 1.5 times higher thermal insulation characteristics. Therefore, it is used more often, its consumption is constantly increasing. Since the protective layer of i-glass is soft and reacts sharply to the influences of the external environment, it is installed with a protective layer inside the glass unit from the side of the room.
Since it is necessary to use high-tech equipment for the manufacture of i-glass, it is produced only by large specialized companies..
The sun-protection glasses used in the facade glazing reduce the penetration of thermal, solar and light energy into the room. They reflect (or absorb) the sun’s rays. These properties are possessed by glasses that are tinted in their mass or covered with a protective mirror layer. Such glasses are usually used for facade glazing..
For example, the international glass corporation “San Gobain” produces tinted glass “Parsol”. It comes in pink, bronze, gray and green. Different spectrophotometric characteristics correspond to each glass tone. It should be remembered that the use of glass with a transmittance coefficient of less than 50% in facade glazing is unacceptable, since overheating of the glass may occur due to temperature differences. Such processes lead to glass destruction..
Glass facades are a common architectural feature in modern buildings, but do they pose any drawbacks or challenges? How does their transparency affect energy efficiency, privacy, and maintenance requirements? Is there an optimal balance between aesthetics and practicality when it comes to using glass facades? Additionally, are there any alternative materials or design solutions that can provide similar benefits with fewer downsides?
Glass facades can offer a sleek and modern look to buildings, but they do come with some drawbacks. The transparency of glass can affect energy efficiency by allowing heat to enter or escape more easily, increasing heating and cooling costs. Additionally, lack of privacy can be a concern in buildings with extensive glass facades.
Maintenance requirements for glass facades can also be high, as they are prone to smudges, streaks, and the buildup of dirt and grime. However, advancements in glass technology, such as self-cleaning coatings, can help reduce the need for frequent cleaning.
Finding the optimal balance between aesthetics and practicality when using glass facades is crucial. While they can enhance the appearance of a building, it’s important to consider factors like energy efficiency, privacy, and maintenance.
Alternative materials or design solutions, such as high-performance glazing systems or incorporating green walls, can provide similar benefits of light and transparency while addressing some of the downsides of traditional glass facades. Ultimately, the choice of materials will depend on the specific goals and needs of the building and its occupants.
What are the main benefits and drawbacks of glass facades in terms of energy efficiency and insulation?