基于DeST的居民建筑节能评估

Energy Efficiency Assessment of Residential Buildings Based on DeST

摘要: 针对国内目前部分建筑存在围护结构保温隔热性能差，空调采暖设备能效比低的问题，本文以广州市某典型住宅楼为例，根据平面设计图，基于DeST软件对该住宅楼进行三维立体建模，研究全年动态负荷的变化规律，评估该建筑的节能效果，并分析不同外墙和外窗围护结构对建筑能耗的影响。结果表明：建筑采暖负荷和空调负荷均随墙体传热系数的增大而增大；空调负荷随外窗传热系数的增大而减小，采暖负荷随外窗传热系数的增大而增大。

Abstract: Currently, some buildings have poor thermal insulation performance of envelope structure and low energy efficiency of air conditioning and heating equipment in China. A typical residential building in Guangzhou is taken as an example in this paper. According to the plan drawing, a three-dimensional model is developed using the commercial code DeST. The variations of annual dynamic load are investigated and the energy efficiency of this building is evaluated. In addition, the effects of different external walls and exterior window enclosures on the building energy con-sumption are analyzed. The results show that the building heating and air conditioning loads in-crease with the wall heat transfer coefficient. The air conditioning load decreases with the increase of heat transfer coefficient of external window, while the heating load increases with heat transfer coefficient of external window.