The Research On Design Method And Evaluation Of Sun-shading System In The Summer-hot And Winter-cold Area

In our country,there're many unsuitable sun-shading of building in the city which make room hot for the greenhouse effect,which cost more and more air-condition energe,especially in the summer-hot and winter-cold area. This area is lack of reseaech on the sun-shading in base of the climate and the most sun-shadings are personally settled which can't work in high- efficiency as a system. So this thesis research the climate of the summer-hot and winter-cold area , find out the proper method of designing the sun-shading of building,and simply the method with computer assissed;also give adjusting advises to the other facters effecting the physical envirment inside building.Sun-shading of building will keep off the radiant heat of the sun,but how much will be kept off and how to evalue the efficiency of Energy Saving,have not be defined .In our country SD is the only parameter to evaluate the efficiency.But,to calculate SD is not easy for the process of the radiant heat into the house is complex.The hight and the azimuth of the sun is changing every time, so is the weather. That cause the radiant heat coming into the window is changing everytime,too.So there are much method to calculate SD.Anymore,for the summer-hot and winter-cold area,sun-shading designers should consider the heat insulation of both summer and winter,but the parameter of SD can not flect both two aspect.Considering the fact upwards, this thesis bring forward a evaluation of sun-shading system which is able to comprehensively evaluate the efficiency of enerage saving. the output data will help designers to choose the right sun-shading for the building.