How to apply building energy-saving technology in the design of door and window curtain wall.

1 Optimal design measures for energy saving of doors and windows in architectural design

Comparatively speaking, the heat exchange between building doors and windows and the outside world is the highest, especially in recent years, the increase in the number of building glass curtain walls leads to the continuous improvement of the window-wall ratio, which puts forward higher requirements for building energy-saving design. Therefore, it is necessary to optimize the design of building doors and windows from the following aspects.

1. 1 Optimize the window-wall ratio

Considering indoor lighting and other factors, designers reduce indoor lighting electricity consumption by increasing the ratio of window to wall. However, because the heat exchange caused by the increase of window-wall ratio is not considered comprehensively, it is more difficult to control the indoor temperature, and more energy needs to be wasted to adjust the indoor temperature. Therefore, in the process of architectural design, designers need to choose the best window-wall ratio according to indoor space and function. At the same time, in order to reduce indoor and outdoor heat exchange, glass with heat insulation effect should be selected, or a retractable sunshade curtain should be added inside the existing glass.

Scientific design of 1.2 window type

In the process of building energy-saving design, window design needs to consider many factors, mainly functionality and aesthetics. Therefore, the window design needs to meet the following requirements.

First of all, the window design should match the reserved space of the wall as much as possible, reduce the reserved gap and avoid the infiltration of air or rain to the greatest extent; Secondly, in the case of meeting the demand, the number of fans should be reduced and the size of fans should be appropriate. The larger the opening fan is, the more easily the movable window structure is deformed, which affects the sealing performance of the window. Finally, in the process of window design, attention should be paid to reducing the division of space by frame structure as much as possible to achieve stable heat insulation effect.

1.3 structural design of doors and windows

From the actual effect, the effect of different door and window opening and closing structure design is also different. Taking casement window and sliding window as examples, the energy-saving effect of casement window is obviously better than sliding window. Similarly, the indoor energy-saving effect is improved in different degrees compared with the traditional sliding door after adopting the horizontal door. The reason why this happens is that the structural design of sliding doors and windows is better than sliding doors and windows. Sliding doors and windows are in unsealed state, and there will inevitably be gaps in the upper and lower parts of doors and windows to reserve sliding space, which will lead to the indoor and outdoor parts not being completely sealed even when the doors and windows are closed, and the heat exchange caused by air flow will also lead to energy loss.

In view of this situation, in terms of building energy-saving design, doors and windows should be opened horizontally as far as possible. If push-pull design is necessary due to functional needs, doors and windows should be opened horizontally as far as possible to achieve the best sealing effect of doors and windows. 2 Energy-saving design of doors and windows curtain wall based on new technology

With the continuous development of science and technology, a large number of new technologies are widely used in the design of curtain walls for doors and windows, which not only meets the functional requirements of traditional doors and windows, but also achieves the purpose of building energy conservation.

2. 1 photoelectric curtain wall design

With the development of photovoltaic technology, making full use of solar power generation technology in building energy-saving design and installing light photovoltaic panels on building exterior walls can not only play a decorative role, but also meet people's electricity demand through solar power generation.

In addition, the researchers also designed a photovoltaic film with high permeability, which can be attached to the glass, thus making full use of the glass curtain wall to generate electricity. Therefore, the photoelectric curtain wall will become an important direction of building energy-saving technology development in the future, which will play a directional guiding role in building energy-saving design.

2.2 Structural design of composite curtain wall

The so-called composite curtain wall structure design mainly includes two forms. One is the design of curtain wall structure filled with heat insulation materials selectively, which can reduce the heat exchange through the curtain wall and obviously reduce the difficulty of temperature control inside the building. The second way is to adopt multi-layer curtain wall design. For example, the decorative sun visor is installed on the outside of the building curtain wall, the low-density heat insulation material is installed in the middle, and the high-density impact-resistant wall is installed on the inside. This can not only ensure the thermal insulation effect of the curtain wall, but also reduce the noise transmission.

The construction cost of composite curtain wall is high, and there are still some shortcomings in construction technology. Therefore, the composite curtain wall has not been widely used at this stage.

2.3 the use of smart glass curtain wall

From the aesthetic point of view, most high-rise buildings use a lot of glass curtain walls in the design process, but the automatic adjustment of indoor temperature and lighting cannot be realized by using traditional insulating glass. Based on this consideration, smart glass curtain wall can be popularized and applied to a certain extent.

Smart glass curtain wall can automatically adjust the light transmittance of glass according to indoor changes and external lighting conditions. After the dielectric anisotropic nanoparticles contained in this kind of glass are fully mixed with special prepolymer, the film of this mixture is mixed between tempered glasses by glue pressing process, and finally the color of smart glass curtain wall can be automatically adjusted in different environments.

3 building energy-saving technology in the design of doors and windows curtain wall considerations

In the design process of doors and windows curtain wall, while achieving the energy-saving effect, we also need to attach great importance to the following aspects. First of all, the design of doors, windows and curtain walls of buildings should tend to meet the functional requirements of humanization, and avoid the blind pursuit of individuality leading to increased costs or reduced practicality; Secondly, for the electronically controlled intelligent door and window curtain wall, we should pay attention to the rationality of circuit design, especially the waterproof and scratch-proof treatment of the circuit and the convenience of later maintenance; Finally, in the design process of energy-saving curtain wall, it is necessary to consider the integration of energy-saving technology and building curtain wall based on the structural strength of curtain wall, otherwise it will bring serious security risks.

4 abstract

In the process of rapid social and economic development, energy shortage has become an important issue of general concern. For this reason, energy-saving technology has widely penetrated into all fields of society, and the development of building energy-saving technology is a response to the concept of green environmental protection. The application of building energy-saving technology in door and window curtain wall design is to weaken the energy demand of traditional building technology and improve the utilization rate of clean energy through scientific methods, thus making contributions to the sustainable development of human society.

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