Curtain wall is one of the factors to beautify the appearance of buildings, but excessive application of curtain walls will produce certain light pollution and bring great inconvenience to people living around them. So, what are the principles of energy-saving technology of glass curtain wall? Let's have a look together!
As the contemporary concept of green environmental protection and energy-saving development continues to take root in the hearts of the people, people pay more and more attention to the current building engineering energy-saving design. How to realize energy-saving and environmental protection construction is the main problem that designers need to solve, of which the most reasonable way is to build the corresponding system and select the best energy-saving materials, so as to achieve the basic strategic way of sustainable development.
Energy-saving technical principles of glass curtain wall
In the process of applying energy-saving glass curtain wall, certain design and construction principles should be followed, and thermal insulation and energy saving design should be carried out according to the actual environmental characteristics of different regions, for example, the basic design principle of winter thermal insulation should be adopted for curtain wall in cold area, and thermal insulation design should be carried out in hot area. Because at present, there is no certain curtain wall code design standard in our country, in the process of building curtain wall design, we should make certain standardized design and specification requirements for exterior walls and windows, and we can also refer to the relevant foreign code design requirements; the heat transfer process and mode should be analyzed and calculated in the construction of curtain wall to ensure its accuracy. The heat transfer system of building curtain wall engineering should also be analyzed comprehensively according to the conditions of the whole building shape and regional natural climate, as well as the heat transfer derivative of profile and the heat transfer system of glass.
Analysis on the key points of Energy Saving Technology Control of Glass Curtain Wall in Building Engineering
1. Select glass curtain wall materials with better energy-saving effect
a. Insulating glass. This kind of glass is a kind of flat glass that cuffs the infrared radiation and maintains the transmittance of visible light. At the present stage, there are mainly two kinds of thermal insulation glass, one of which is the most common sodium calcium silicate glass, which is mixed with a kind of endothermic colorant, and the second is to spray an appropriate amount of metal on the flat glass. and the energy-saving thermal insulation glass curtain wall made by oxidizing film of metal.
b. Low-radiation glass. The surface of this kind of glass is plated with many layers of metals and some compounds. Its coating can have a certain high reflection performance to visible light or infrared, so the effect of energy saving and heat preservation is higher than that of ordinary glass curtain wall, and it can better ensure the overall light transmittance of glass.
c. Vacuum glass. The main purpose of this kind of glass is to set up a lot of support blocks between the two flat types of glass, and it can also be sealed by low-temperature glass around the glass, and after the sealing treatment, the air between the two pieces of glass is drawn out to form vacuum glass. Compared with hollow glass, there will be no heat conduction or convective transfer, and only through radiation can a certain degree of heat transfer be carried out, so vacuum glass has better thermal insulation and thermal insulation, and has a more outstanding energy-saving effect.
d. Double glazing. This kind of curtain wall is mainly composed of two layers of glass inside and outside, that is, there is a channel between the two layers of curtain wall, and the air inlet and outlet is set in the outer curtain wall. Compared with the traditional building glass curtain wall, this kind of curtain wall also has sandwich design, which can not only improve the thermal insulation and thermal insulation of curtain wall engineering, but also provide parts for the prevention and control of sunshade components. This kind of curtain wall mainly produces the effect through the chimney in summer, and reduces the indoor temperature with the help of natural ventilation and ventilation. Through the sunlight in summer, the air in the passage of the curtain wall will be heated, and the air will flow from the bottom up, and the hot air generated in the channel will be taken away, thus reducing and achieving the basic effect of indoor temperature. At the same time, the semi-transparent rolling curtain can be put down, and with the help of the rolling curtain emission to eliminate part of the recuperation and laying, reduce the indoor temperature, so as to reduce the cooling load and meet the effect of energy saving and consumption reduction.
2. Construction energy saving
In the construction of the building curtain wall, to ensure a good connection position between the components and metal materials, a flexible gasket can be used, and the gap between the column and the main structure can be reserved and sealed by glue injection. The construction area of structural glue should ensure that there are good working conditions, and the structural adhesive should also meet the construction specifications and do a good job of maintenance and management after the completion of construction. At the same time, before weathering glue, the glass can be glued and cleaned, and glue should be avoided at night and on rainy days, while two sides should be effectively bonded when gluing seams, not three-sided bonding, once three-sided bonding will cause repeated tension and pressure and tear of the weathering adhesive, thus losing the basic effect of sealing. In addition, when the curtain wall construction between each floor or the outer edge of the partition wall, rock wool should be used to seal to ensure the compactness of the filling work, and its thickness can not be greater than 10cm, only in this way can we improve fire prevention and maintain good thermal insulation.
3. Improve the setting of the sunshade system
Improve the setting of the curtain wall sunshade system, reduce the adverse impact of solar radiation on the indoor temperature of the building, and the sunshade system should play a certain role in decorating the curtain wall, but also make the outer structure of the building more abundant. Glass curtain walls can be divided into many types, such as fixed and movable shading, as well as internal and external shading and so on. Therefore, how to choose the way of shading should be decided according to the glass curtain wall and the whole sunshade system.
4. Acceptance of energy-saving quality of glass curtain wall
In the building glass curtain wall project, the air tightness needs to meet the grade of construction design. Firmly inlaid sealing strip, clear its position, more want tight docking. In the construction of curtain wall, it is necessary to do a certain amount of moisture-proof treatment of construction materials, so as to avoid damp. In addition, the installation of sunshade facilities should be in line with the requirements of engineering design and be carried out firmly. At the same time, the glass curtain wall should be well insulated in the part of the hot bridge, meet the whole design requirements, and connect and firmly break the heat node.
The above is the introduction of energy-saving technology of glass curtain wall. if you want to know more about glass curtain wall, please feel free to contact us.
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Post time: May-27-2022