摘要
采用模拟耦合计算室内照度与窗体能耗的方法,以上海为研究区域,针对朝南方向,分析了水平、垂直遮阳板以及卷帘等不同装置引起的照明能耗和制冷能耗之和,并由此评价其节能降耗的效果。结果表明,当灯具光效大于41.2 Lm/W时,遮阳卷帘引起的综合能耗较小;而当光效小于上述数值时,水平遮阳板更好。这两种遮阳措施下室内的照度分布相对比较均匀,适宜南向房间;而垂直遮阳板将造成较大制冷以及照明能耗,特别是垂直遮阳板更会增加室内眩光水平,故而南向最好不要使用。
The energy-saving effect of horizontal and vertical shading devices and roller shade is estimated,according to both daylighting and heat-proof performance.Several fa？ade configurations were modeled in Shanghai for the south orientations.These simulations were performed by coupling a daylighting simulation tool and thermal simulation software.By calculating the sum of artificial lighting energy consumption and cooling energy consumption caused by window system,different kinds of shading devices in terms of their potential of energy-saving are compared.The simulation results indicate that,the roller shade or horizontal shading boards for the south orientation should be chosen according to the different luminous efficacy of light source.The critical value is 41.2 W/m2.Both of two kinds of shading devices can keep the indoor illumination level within the acceptable amount of window heat gain.However,vertical shading boards can result higher lighting or cooling energy consumption.Especially,vertical shading devices can not control the glare level in the room effectively.So we should avoid using them for the south windows.
出处
《建筑节能》
CAS
2011年第10期57-61,共5页
BUILDING ENERGY EFFICIENCY
基金
上海市建筑建材业市场管理总站立项资助项目(2010-001-001)
关键词
建筑节能
遮阳装置
自然采光
遮阳系数
building energy-saving
shading devices
daylighting
shading coefficient
