Study On Public Buildings Glass Curtain Wall Of Energy Saving In Cold Region

Glass curtain wall broke the traditional boundaries of the window and wall, it not only updated the concept of modern architectural design and practices, but also showed the new progress of modern building technology. But the glass curtain wall of the air tightness and thermal insulation properties of high energy consumption caused by poor problem has aroused great attention. How to make glass curtain wall more energy efficient becomes the hot topics.This paper started from the main factors which affected the energy consumption of glass curtain wall, combined with the research of Xi'an 21 public buildings glass curtain wall decoration project, through on-site field trips, use of statistical methods to the architectural glass curtain wall design parameters used for comparison, mastered the basic situation of glass curtain wall of public buildings in Xi'an, analyzed the thermal performance factors of the impact to the exposed frame supported glass curtain wall and full glass curtain wall. And according to the thermal design of curtain walls used to calculate a series of thermal parameters, the study draws the glass curtain wall in cold regions suitable for the size factor and the window wall ratio, raised the energy-saving measures of public building glass curtain wall in cold region, and conducted in-depth analysis of typical case studies.This has been calculated that the exposed frame supported glass curtain wall thermal performance factors are poorer than full glass curtain wall when used the hollow glass panel, And with the glass panel heat transfer coefficient lower, the impacts of frame material become greater to the glass curtain wall overall heat transfer coefficient; To further improve the performance of glass curtain wall insulation should be to promote the advanced technologies that are multi-layer hollow glass , vacuum glass and Double-skin facade. Through studied the composition and operation principle of Double skin facade, summed up the characteristics and scope of its application; Counted and analyzed the technical parameters of domestic and international double-skin facade. Found out the application law and the domestic application problems of Double-skin fa?ade. Put forward the reasonable application design method of double-skin facade. On a detailed analysis of typical cases, verified the applicability of Double-skin facade in cold regions, provided a theoretical basis and engineering application methods for the promotion of Double-skin facade in cold regions.