外遮阳百叶隔热性能与采光分析

外遮阳百叶能合理控制太阳光线进人室内,减少建筑空调能耗和人工照明用电,改善室内光环境,已成为当前追求"绿色建筑"目标的一项具体措施.该文通过理论分析和模拟,借助EnergyPlus、Radiance等软件,结合光和热两方面综合考虑,对空调时期上海地区布置不同角度和活动的外遮阳百叶办公房间的空调能耗、照明能耗及室内光环境进行了模拟、分析与比较.算例结果表明:外遮阳对照明能耗和建筑光环境的影响不容忽视;夏热冬冷地区固定式遮阳百叶的不同角度设置对建筑能耗的影响较大,其中实施活动式外遮阳措施能大幅度降低建筑能耗,有效改善室内光环境.

The Analyses of Outer Blinds System on Heat Insulation and Daylight

The outer blinds system can not only decrease the energy consumption of air conditioning and lighting system,but also improve the indoor lighting environment by rationally controlling the daylight into rooms,which is a practical step to pursue the object of green buildings.The simulation tools of EnergyPlus and Radiance was applied to compare and analyze energy consumption of air conditioning and lighting system and indoor lighting environment in period of air-condition with different angles and adjustive outer blinds at office rooms at Shanghai with consideration of the effect of lighting and thermal environments.The simulation results indicate that the impact of the outer blinds on lighting energy consumption and lighting environment is not ignored,the impact of the different angles on building energy consumption is larger at Zone of Hot Summer and Cold Winter,and the adjustive outer blinds can decline the building energy consumption sharply and improve indoor lighting environment effectively.