寒冷地区固定式外遮阳设计研究

固定式外遮阳是建筑遮挡太阳直射辐射的有效建筑构件。由于固定式外遮阳具有投资低、使用寿命长的特点,因此被大量办公建筑采用。《2007全国民用建筑工程设计技术措施》中给出了固定式外遮阳的适用范围与遮阳系数的计算方法,但并未给出合理设置固定式外遮阳的标准,存在不足之处。结合气候特征、太阳日轨图,分析给出了寒冷地区固定式外遮阳的设置标准与计算方法,并采用建筑能耗模拟的方法验证了该设置标准与计算方法的正确性,为建筑师在寒冷地区设计固定式外遮阳提供了参考。

Design of Fixed External Shading in Cold Region

Fixed external shadings are important building components which reduce solar direct radiation.Because of low investment and long service time, fixed external shadings have been adapted in many office buildings.There is the range of application and computing method of shading coefficient in "National Technical Measures for Design of Civil Construction Special Edition-Energy Conversation".However, it lacks the standard on choosing the optimal fixed external shadings according to different conditions.Based on climatic characteristic and sun-path diagram, this paper achieved both applicative situation and computing method of fixed external shadings in cold region by using energy consumption simulation, giving a reference to designers on fixed external shadings in cold region.