考虑视觉舒适度的动态采光模拟与照明能耗分析

Consumption dynamic daylighting simulation and lighting energy analysis considering visual comfort

提出一套考虑动态遮阳影响的动态采光模拟算法,并根据动态采光指标提出照明能耗分析模型.动态遮阳控制以视觉舒适度指标为依据,并由此得出年周期上的遮阳控制时间线,将不同遮阳状态下的动态采光模拟结果根据时间线"拼接"出目标结果.照明能耗根据自主采光阈(DA)与照度需求值之间的差值统计得出.将该模拟算法与能耗分析模型应用于案例分析,结果说明,我国南方地区高层高空间推荐采纳动态百叶遮阳方案.所提出的算法可有效地解决考虑动态遮阳后的采光模拟问题;基于动态采光指标的照明能耗分析模型能准确地反应日间人工照明消耗;我国南方地区的大幕墙遮阳推荐使用百叶遮阳方案,对于层高较低且偏好低投资的建筑空间可以使用织物卷帘方案.

A simulation algorithm of dynamic daylighting was proposed which considered the effect of dynamic shading,and a lighting consumption analysis model was given based on dynamic daylit metric.The dynamic shading control was based on the visual comfort metric,by which the annual cycle shading control timeline was obtained.The dynamic daylit simulation results under various shading conditions were used to“splicing”the objective results according to the time line.The lighting consumption was calculated according to the difference between the DA and the required illuminance.The simulation algorithm and the energy consumption analysis model were applied to the case analysis,and the results show that the dynamic louvers shading option is recommended for high layer height room spaces in southern China.As results,the proposed algorithm can effectively solve the problem of dynamic shading considering daylit simulation;the dynamic daylit metric-based lighting consumption analysis model can accurately indicate the artificial lighting consumption in daytime;the louvers are recommended for the large curtain wall in the south China,while for the low layer height with low preference for investment,the fabric roller shade could be used.