基于实测及Radiance模拟的徽州传统天井民居光环境研究

Measurements and Radiance Simulation Analysis of the Daylighting Performance of Chinese Traditional Patio Houses in Huizhou

以徽州地区西递、豸峰和俞源三个村落中的八栋传统天井民居为例,在全阴天的条件下分别对八栋民居室内自然光照度进行测量,并利用Radiance软件对民居天井区域采光情况进行模拟分析。通过对比分析八栋民居室内天井区、公共活动区、厅堂区等区域的平均采光系数,得出如下结论:天井光井指数WI是决定天井民居室内采光好坏的重要指标,当WI≤3时,天井区域的光环境较好,其平均采光系数在5%以上;采用反射系数较高的材质装饰墙面和地面,并保持其干净整洁也有助于改善室内的采光效果。

The daylighting performance of eight Chinese traditional patio houses in three villages(Xidi, Zhifeng and Yuyuan) was studied by the analysis of on-site measurements and Radiance simulation under overcast sky conditions. Comparing WI and DFm and DFm-r of the eight patio houses,it can be found that the WI(well index) is an important indicator for the quality of indoor daylighting. When WI≤3, the daylighting condition of the patio is good with the average value of DF(daylight factors) above5%. Decorating walls and floors with materials with high reflectivity and keeping them clean and tidy can also help to improve indoor lighting effect.