The friend’s unit is in an office building in Xinjiekou, Nanjing. When I met him, I asked him, is it cool in the office? There are dozens of stories high on the floor, but the ventilation is good? He said that it is not cool at all! Because the office building is installed with a glass curtain wall, although the curtain wall is covered with film, the sun shines in. The glass curtain wall is like a solar heat pipe. On hot days, the office is like a stove at 8 o'clock in the morning.
The building opposite the office building is also a glass curtain wall, brightly staring at the glare. The two buildings are like two mirrors and illuminate each other.
Research by optical experts shows that the reflected light of the mirror building glass is stronger than that of sunlight, and its reflectance is as high as 82%-90%. The summer sun is reflected into the room, raising the room temperature by an average of 4 to 6 degrees Celsius.
In recent years, in order to pursue visual effects, large-format glass curtain walls have been widely used in high-rise buildings in cities, causing the phenomenon of “cold winter and hot summer†in buildings. Indoor air conditioners have to use high-power air conditioners to regulate room temperature.
Urban buildings in Europe are more walled instead of wall vitrified. The laws of Germany and other countries stipulate that public buildings (including government office buildings) are not allowed to open air-conditioners in summer. Therefore, regardless of their design or application, the buildings are particularly focused on the energy-saving effect of the external walls of buildings, and “glass†buildings are used as high consumption. Building construction has long since been abandoned as construction waste.
According to reports, a researcher at the Institute of Paleontology at the Chinese Academy of Sciences has been obsessed with vertical greening for 24 years, and the indoor temperature has dropped by 3 degrees Celsius. The old man said that the ivy can not only reduce the temperature, but at the same time, the whole wall of the green creeper is also very beautiful, making people look relaxed and happy. Many colleges and universities, such as Hohai University, Nangong University, and Nanjing Normal University, are also surrounded by climbing vines, and some climb to the top of small high-rise buildings. From afar, greenery looks like a green forest.
In order to improve the urban living environment and reduce the urban heat island effect, in order to save on the scarcity of electricity, urban building walls should use less glass curtain walls.
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