基于新旧采光标准差异的建筑能耗分析研究

Research on Building Energy Consumption Based upon the Difference between the New and the Original Lighting Standard

2013年我国新实施的GB50033《建筑采光设计标准》在原标准的基础上进行了全面的修订,将原标准中针对侧面采光评价指标的采光系数最低值改为了采光系数平均值。为了研究新旧采光标准的差异对建筑能耗的影响,文章以沈阳、北京、长沙、广州、昆明五个城市的某住宅建筑和办公建筑为例,利用软件模拟的方法分析各建筑满足不同采光评价指标的窗宽尺寸下限,并在此基础上分析不同窗宽尺寸下限的建筑能耗。分析结果表明,采用新标准时的建筑外窗尺寸下限和建筑总能耗均比采用旧标准时小,当供暖空调设备按间歇模式运行时,在温和地区和夏热冬暖地区采用新采光标准比采用旧采光标准具有更好的节能效果。

Since the new version ＂Standard for daylighting design of buildings＂ GB50033 has fully revised the original standard, which uses the average value of daylight factor in the stead of the minimum value of daylight factor. This revise will lead to the change of window size and eventually change the consumption of building energy. In order to research on building energy consumption based upon the difference between the new and the original lighting standard, the author tries to carry out the study with software simulation, which built residential and office building models respectively in Shenyang, Beijing, Changsha, Guangzhou and Kunming to analysis the changing rule of the lower limit of window size and the building energy consumption. The results show that the window size and the consumption of building energy are smaller when using the new version standard than using the original one. Using the new version standard in temperate areas and in hot summer and warm winter areas have better energy saving effect than using the original standard when the HVAC equipment are under intermittent operation.