外窗遮阳对闽北办公建筑综合能耗的影响

闽北地区夏季闷热,通过外窗进入的太阳辐射热量较大。本文以南平地区为例,首先分析了外窗玻璃太阳辐射得热数学模型,指出减小外窗太阳能透过率可有效解决夏季太阳照射带来的室内过热。其次,分析了办公建筑侧窗采光数学模型,指出外窗遮阳减弱了建筑自然采光,增加照明能耗,外窗遮阳措施应综合考虑照明和空调能耗。为兼顾空调制冷与照明的能耗平衡,本文采用建筑环境模拟分析软件DeST,采用8种不同综合遮阳系数的外窗,模拟分析综合遮阳系数对建筑照明能耗、空调能耗的影响。最后得到适合闽北地区办公建筑的外窗遮阳措施。

The Impact of Window Shading on Integrated Energy Consumption of Office Building in Northern Fujian

It′s hot and stuffy in Northern Fujian in summer;energy consumption through the window is large.Take Nanping for example,this paper first analyze mathematical model of heat gain and loss through window,and indicates that window shading can be an effective solution to the indoor overheating caused by summer sunshine.Second,analyzes the mathematical model of side-windows lighting of office buildings,and indicates that window shading weekends natural light and makes the lighting energy consumption increases.Both lighting and air conditioning energy consumption should be taken into account when choosing window shading.In order to balance air-conditioning and lighting energy consumption,uses the building environment simulation software DeST to simulate 8 types of window,analyzes the effect of various types of window shading on lighting and air-conditioning energy consumption.Finally,the suitable performance range of window shading is obtained for office building in Northern Fujian.