The Energy Efficient Analysis And Strategy Of Public Buildings' External Shading In Hefei Area

External shading not only provides new ideas and methods for building design,but also is an important means of building energy efficiency. At present, the role of external shading energy-efficient in our country has not been enough attention, because many researches of external shading energy savings remain stay at qualitative stage and lack quantitative ingredient. Especially in Hefei, the quantitative research related to energy saving effect of external shading is much less and people have not adequate understanding of external shading's energy-saving effect,so the overall awareness of setting up external shading is relatively weak in this region. Based on this author from the perspective of energy efficiency research on public building exterior shading in Hefei. The main contents and conclusions are as follows:First, in order to grasp the overall situation about public building external shading in Hefei, the author chooses four typical district to research. Through research the author find follow phenomena:the percentage of public building setting external shading is very low, the manner of setting up external shading is unscientific,the awareness of setting up external shading is relatively weak.Secondly, the author does simulation calculation for an ideal building model by the energy-saving software and analyze the energy status of different ways, different sizes and different directions' external shading. After statistical analysis the author find follow conclusions:external shading can improve building energy-saving rate,the energy-saving rate is different when shading is in different way or with the same way in different direction and different size.Finally, based on above calculation, the author analyze the solutions of problems about Hefei public building external shading. Meanwhile, after referring to some advanced shading technology and combining the specific situation of Hefei, the author put forward some directional advice for public building external shading's future development.