0010010 nbsp; 0010010 nbsp; 0010010 nbsp; The application of architectural curtain walls in China started from the 1984 year, after nearly two decades of development, to the present So far, my countryBuilding curtain wall glassThe annual output and the amount of possession are already world-renowned. But in recent years, as competition has intensified, the market has become saturated, prices have fallen, and profits have decreased, everyone involved in the curtain wall industry is thinking: What kind of curtain wall does the market need? We believe that energy-saving and environmentally friendly curtain wall products will be the new darlings in the future market.

The frequent occurrence of energy crises and the deterioration of the living environment have made mankind deeply aware of the importance of saving energy and protecting the environment. According to the requirements of China's building energy conservation and environmental protection policies, before 2000 years, newly designed heating residential buildings should reduce 50% on the basis of 1980 and 1981 annual energy consumption; Starting from 2005 years, new heating residential buildings should save energy on this basis 30%; in 2010 years, save energy on this basis 30%. According to this requirement, the market prospect of energy-saving and environmentally friendly curtain wall products is very broad.

Some energy-saving and environmental protection measures currently adopted in the design and application of building curtain walls are:

　　1. Insulating glass, especially LOW-E insulating glass technology

Ordinary white glass 6 mm, k value is about {{{{{{{1 2}} 0}}}} w / ㎡k; {{{{{{{{ 15}} 2} 0}}}} + 6 + {{{{{{{1 2}} 0}}}} ordinary insulating glass, K value is about 2. 6 ~ 3. {{{{{{1 2}} 0}}}} w / ㎡k; if Using LOW-E insulating glass and filling with argon, the K value can reach {{{{{1 2}} 0}}. 6 ~ {{{{{{}} 2} 0}}. {{1 3}} w / ㎡k. LOW-E insulating glass has obvious energy saving and environmental protection effects. In winter, it can effectively prevent the heat radiation of indoor heating from leaking out; in summer, it can prevent outside heat radiation from entering the room. At present, the average annual consumption of Low-E glass worldwide has reached {{{{1 2} 0}}. 2 billion m 3.

　　2. Double-layer energy-saving curtain wall

The double-layer energy-saving glass curtain wall is mainly divided into internal circulation and external circulation systems, which have their common points and different points. The common feature is that a greenhouse effect is formed between the double-layer glass, and the superheated air in the greenhouse in summer is excluded from outdoor The solar thermal energy is discharged into the room, so that the winter and summer seasons have a lot of energy. In summer, it is necessary to require sunshade for the protection against ultraviolet rays and strong heat radiation, and the inner circulation and outer circulation systems.

　 0010010 nbsp; 0010010 nbsp; 3. "Insulation Broken Bridge" Technology

At present, China has introduced two production technologies and complete sets of special equipment: "injection plastic method to cut off heat aluminum profile" and "insert strip method to cut off aluminum profile". Hundreds of heat-insulating aluminum profile production lines have been built in Shenzhen, Nanhai, Foshan, Xi'an, Qinhuangdao, Beijing and other places, with an annual production capacity of 100 million tons. In terms of market demand, the market share of thermally insulated aluminum doors and windows has been rising in the past two years. According to statistics, as far as the current Beijing commercial housing projects are concerned, the practical installation and utilization rate of insulated aluminum doors and windows is close to 46%, and this figure has been surpassed in the housing construction projects within the fifth ring road in Beijing 70%.