夏热冬冷地区外遮阳对建筑能耗及采光效果的影响分析

Analysis on the Influences of External Shading on Building Energy Consumption and Daylighting Effect in Hot-summer and Cold-winter Region

建筑外遮阳能合理控制太阳光线进入室内,减少建筑空调和照明系统的能耗,改善室内光环境。本文通过理论分析和模拟,借助DeST和Radiance软件,从光和热两方面综合考虑,对嘉兴市某公共建筑布置不同角度和尺寸的外遮阳办公房间的空调供暖能耗和室内光环境进行了模拟、分析与比较。算例结果表明,建筑外遮阳在大幅度降低建筑能耗的同时,还能有效改善室内自然采光环境。

Building external shading can rationally control the sun light that enter into the room,reduce the energy consumption of air-conditioning and lighting systems,and improve the indoor light environment.In this paper,through the theoretical analysis and simulation with the software of DeST and Radiance,the simulation of energy consumption of air-conditioning and heating systems and indoor light environment under different external shading angles and dimensions of a public building in Jiaxing was carried out.The results indicated that building external shading could reduce the energy consumption significantly and improve indoor daylight environment at the same time.