基于国产自主BIM技术的天然采光节能量算法研究

Study on the Calculation Method of Natural Lighting Energy Saving Base on Domestically Self-developed BIM Technology

双碳背景下,建筑能耗分析、碳排放量分析过程中对于建筑运行阶段各分项能耗的计算以及优化效果体现的需求日益显现,现有标准计算方法不能满足当下降耗减碳计算需求。本文以夏热冬冷地区居住建筑常用外窗尺寸及室内计算参数为例,使用PKPM-Daylight天然采光分析软件,分析了不同朝向外窗采光效果差异、夏热冬冷地区典型城市采光效果时间分布、常见尺寸外窗满足GB 50034—2013《建筑照明设计标准》中照度所要求的区域面积、有效进深、有效开间,总结、提出了天然采光节能量的计算方法,以期对各气候区各类建筑的计算提供参考。

In the context of carbon peaking and carbon neutrality,there are increasingly apparent demands for the calculation of energy consumption and the representation of optimization effects of each sub-item in the building operation stage,and the existing standard calculation method cannot meet the current calculation demands in the reduction of consumption and carbon emissions.Taking the commonly used external window size and indoor calculation parameters of residential buildings in hot summer and cold winter areas as an example,this paper analyzed the differences in daylighting effects of external windows in different orientations,the time distribution of daylighting effects in typical cities in hot summer and cold winter areas,and the area,effective depth and effective bay of commonly used external windows that meet the illumination requirements in GB 50034-2013 Standard for Lighting Design of Buildings.Finally,the calculation method of natural daylighting energy saving was summarized,in order to provide reference for the calculation of various buildings in different climate zones.