Energy-Efficient Design And Research Of Curtain Wall In Sereve Cold Zones

With the rapid development of China's economy,a substantial increase in energy consumption in 2010,China has become the world's major energy consumers.Total building energy consumption accounts for 20%of the country's total energy consumption,energy consumption and the external structure of 70%in construction,and transparent walls and is a key component of its energy consumption,so the transparent curtain wall design of building energy consumption,environmental performance,indoor air quality and the user is located visual and thermal comfort are radically affected.General increase of transparent curtain wall costs only 3%to 6%of the total investment,while the energy-saving,but up to 20%to 40%.In this paper,the current mainstream form transparent curtain walls and various types of energy-saving advantages and disadvantages of research and analysis,from the perspective of energy-saving design of the main problems that exist in each system,to solve these problems studies draw some energy-saving technologies should be promoted in order to adapt to the development of society.By improving the thermal performance of transparent curtain in the summer can reduce outdoor heat into the room,in the winter can reduce the loss of indoor heat,to make the building thermal environment can be improved,thereby reducing building cooling,heat dissipation,to solve our energy shortage and promotion use of renewable energy and protecting the environment has a very important significance.Summarized the theoretical basis of various forms of transparent curtain wall thermal calculation and describes the thermal simulation software and Window Therm role and use of methods,a preliminary understanding of the main factors transparent curtain wall overall heat transfer performance of the following areas:a central glass panel parts of the heat transfer coefficient,heat transfer coefficient of the rear glass panel and the aluminum alloy composition panel edge portion position,aluminum thermal break profile heat transfer coefficient.Therefore,to reduce the whole jamb walls of the heat transfer coefficient should first reduce the heat transfer coefficient of curtain wall system,the largest proportion of the glass panel,followed by the use of excellent heat insulation performance of aluminum profiles and glass and profiles minimize cold bridges connecting position connection.Finally,different transparent curtain wall thermal performance data for comparative analysis of the actual project results how to adopt more economical and practical way to improve the transparency of curtain wall insulation properties.Transparent curtain thermal analysis described in this paper,although made some achievements,but these are not sufficient to meet the social make up for a shortage of resources,but also the need for more research in many theoretical and technical:When a node using different glass configuration to improve the situation of node thermal current international and domestic popular heat-absorbing glass,glass and other warm edge;nodes with shading devices to study the need to study the case of shading,transparent walls of the thermal performance of the specific circumstances of savings Effect type and placement of energy-saving curtain wall;through more in-depth theoretical study of the energy consumption calculations,given in detail for each energy conservation.The exact cost of the energy saving node,so the amount of cost savings.