The application of the building curtain wall in China began in 1984. After nearly 30 years of development, the annual production and possession of the building curtain wall in China has ranked first in the world. However, in recent years, with the intensified competition, the saturation of the market, the decline in prices, and the reduction in profits, all people involved in the curtain wall industry are pondering: What kind of curtain wall is needed in the market? The author believes that energy-saving and environmentally friendly curtain wall products will be the darling of the future market.
Compared with single-layer curtain walls, double-layer curtain walls have lower contrast in building energy consumption and are new areas that curtain wall companies have advocated in recent years. With the continuous deepening of the concept of energy conservation and environmental protection, double-ventilated curtain wall as an emerging technology product, its good environmental protection, energy-saving performance, and innovative structure to bring more changes to the exterior decoration.
The classification and characteristics of double-layer curtain wall 1. The outer curtain wall of outer double-layer curtain wall adopts single-layer glass. In the lower part, there is an air inlet and the upper one has an air outlet. The inner curtain wall is made of insulating glass, heat-insulated profiles, and has an openable window or door. It does not require special machinery and equipment. It completely relies on natural ventilation to radiate heat from the sun, and it is discharged to the outside through the exhaust outlet on the passage. In order to save energy and mechanical maintenance costs. Open the upper and lower vents in the summer to cool the natural exhaust air. In winter, the upper and lower vents are closed, and solar radiant heat enters the room through the open door or window, which can use heat energy and reduce the loss of indoor heat energy.
2. Internal circulation type double curtain wall 1) The outer curtain wall is made of insulating glass and heat insulating material to form a closed state. The inner curtain wall adopts single-layer glass or single-layer aluminum alloy doors and windows, which can be opened. With mechanical ventilation, air enters the passage from the floor or underground tuyere and flows through the upper exhaust opening into the ceiling.
2) Since the air entering the room is indoor air, the temperature of the air in the channel is basically the same as the indoor temperature, so energy for heating and cooling can be saved, which is more favorable to the heating area. As the internal ventilation requires mechanical equipment and photoelectric control shutter shutters or shade systems, there are higher technical requirements and costs.
3. The double curtain wall with integrated internal and external circulation 1) Not only is it rigidly adhered to the single circulation mode of the internal circulation or the external circulation, but also has more flexible adaptability to the outside weather and climate conditions. For example, summer and winter have a better balance, and reduce the dependence on other systems (such as fresh air system, refrigeration system, etc.), which is beneficial to improve the comprehensive energy-saving effect.
2) The channel setting is generally only used for ventilation and its width is 100-300mm. When inspection and cleaning are required, the width is 500 to 900mm. It has a width of >900mm for rest, viewing, and walking and has a grille.
Compared with single-layer curtain walls, double-layer curtain walls have lower contrast in building energy consumption and are new areas that curtain wall companies have advocated in recent years. With the continuous deepening of the concept of energy conservation and environmental protection, double-ventilated curtain wall as an emerging technology product, its good environmental protection, energy-saving performance, and innovative structure to bring more changes to the exterior decoration.
The classification and characteristics of double-layer curtain wall 1. The outer curtain wall of outer double-layer curtain wall adopts single-layer glass. In the lower part, there is an air inlet and the upper one has an air outlet. The inner curtain wall is made of insulating glass, heat-insulated profiles, and has an openable window or door. It does not require special machinery and equipment. It completely relies on natural ventilation to radiate heat from the sun, and it is discharged to the outside through the exhaust outlet on the passage. In order to save energy and mechanical maintenance costs. Open the upper and lower vents in the summer to cool the natural exhaust air. In winter, the upper and lower vents are closed, and solar radiant heat enters the room through the open door or window, which can use heat energy and reduce the loss of indoor heat energy.
2. Internal circulation type double curtain wall 1) The outer curtain wall is made of insulating glass and heat insulating material to form a closed state. The inner curtain wall adopts single-layer glass or single-layer aluminum alloy doors and windows, which can be opened. With mechanical ventilation, air enters the passage from the floor or underground tuyere and flows through the upper exhaust opening into the ceiling.
2) Since the air entering the room is indoor air, the temperature of the air in the channel is basically the same as the indoor temperature, so energy for heating and cooling can be saved, which is more favorable to the heating area. As the internal ventilation requires mechanical equipment and photoelectric control shutter shutters or shade systems, there are higher technical requirements and costs.
3. The double curtain wall with integrated internal and external circulation 1) Not only is it rigidly adhered to the single circulation mode of the internal circulation or the external circulation, but also has more flexible adaptability to the outside weather and climate conditions. For example, summer and winter have a better balance, and reduce the dependence on other systems (such as fresh air system, refrigeration system, etc.), which is beneficial to improve the comprehensive energy-saving effect.
2) The channel setting is generally only used for ventilation and its width is 100-300mm. When inspection and cleaning are required, the width is 500 to 900mm. It has a width of >900mm for rest, viewing, and walking and has a grille.
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