The necessity and advantages of building external shading

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　　From the current domestic existing buildings and new buildings, there are considerable energy-saving problems, and through research, it is found that external shading plays a significant role in reducing energy consumption of buildings as a whole. In summer, the air-conditioning load entering the room through windows mainly comes from solar radiation, and the main energy consumption also comes from solar radiation.

　　To reduce the load and energy consumption of the external windows, effective shading measures must be taken, and the effects of reducing air infiltration or reducing the heat transfer coefficient are very limited. Therefore, in the calculation of the load of air-conditioned buildings and building energy saving, shading is an effective measure to reduce the air-conditioning load caused by the solar radiation of the external windows.

　　External shading technology has three advantages:

　　First, the energy saving effect is good. At present, the indoor sun shading commonly adopted in China is an ineffective sun shading method. Ultraviolet rays pass through the glass to the sunshade curtain, and the fabric or metal curtain becomes a heat source. The actual heat has entered the room. The outer sunshade curtain can block heat, ultraviolet rays and other strong light outdoors for the first time, and the effect of heat insulation and energy saving is completely different from the effect of installing curtains inside the glass.

　　Second, the economic effect is excellent. The use of external shading technology has low investment and obvious results.

　　Third, the artistry is strong. Through the improvement of the external awning material and the choice of color, the building facade can also become rich in layers, beautiful and beautiful. It can be said that the external shading technology is a high degree of unity of architectural function and architectural form.

　　The development status of external shading of buildings

　　At present, building energy efficiency is becoming more and more popular among the people. East China is an area with hot summer and cold winter. In recent years, a large number of residential buildings have been affected by architectural minimalism, which has a great impact on the application of building shading technology that can have great energy-saving potential. Building facades with large glass windows for sunshade are everywhere. Studies have shown that the cooling effect of building exterior shading is better than interior shading in areas with hot summer and cold winter.

　　Future prospects of building exterior shading

　　In the current residential buildings, most of what we see are movable external shading, which not only has good lighting, ventilation, and shading effects, but also according to the different angles of sunlight, especially the south-facing and west-facing exterior windows, to illustrate the common people Attention has been paid to the problem of heat insulation of windows, and it also shows that the installation of external shading on external windows in East China is welcomed by the people.

　　From the current domestic existing buildings and new buildings, there are considerable energy-saving problems, and through research, it is found that external shading plays a significant role in reducing energy consumption of buildings as a whole. In summer, the air-conditioning load entering the room through windows mainly comes from solar radiation, and the main energy consumption also comes from solar radiation.

　　To reduce the load and energy consumption of the external windows, effective shading measures must be taken, and the effects of reducing air infiltration or reducing the heat transfer coefficient are very limited. Therefore, in the calculation of the load of air-conditioned buildings and building energy saving, shading is an effective measure to reduce the air-conditioning load caused by the solar radiation of the external windows.

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