Evaluation on energy efficiency of windows in different climate zones of China

In this paper several kinds of window shading are introduced and compared. In addition, the potential of energy efficiency of exterior shading and three representative windows in three typical cities of China are analyzed and compared using eQUEST software. The objective of this paper is to analyze the influence of window shading in different climate zones of China through simulation. The result shows that in freezing climate zone it is appropriate to use the low-e windows with small U-value. The window with large SC-value and together with the optimum shading is the best way in hot summer & cold winter climate zone. It is appropriate to use the windows with small SC-value in hot summer & warm winter climate zone. And low-e window has an obvious effect on energy conservation in the three climate zones. This simulation may provide a comparing way for the energy saving design in the future buildings and some suggestions for architects to adopt the optimal type of window shading according to local conditions.