CURRENT SITUATION OF RESEARCH AND APPLICATION OF EXTERNAL SHADING DEVICE OF BUILDING

The application of external shading devices for windows is an important aspect in building energy-saving.There are three forms of fixed external shading device,which are horizontal device,vertical device and synthesis device.The external shading device should adopt horizontal type in the south,where movable one is the best.The external shading device should adopt roll shade,louver,and synthesis type for the east or west.Attention should be paid to design external shading devices for windows on ventilation,daylight,size of shading device,construction and service life.