南京地区居住建筑围护结构能耗比例研究

Study on energy consumption rate of residential building enclosure structure in Nanjing district

南京地区建筑节能设计目标正逐步从50%节能向65%节能及更高目标推进,围护结构承担着重要的节能任务,探究围护结构各分项的节能潜力,有助于进一步明确节能设计的技术方向。综合南京地区普通居住建筑的共性,选取了有代表性的3栋典型住宅作为基准建筑,采用数值模拟计算并分析了采暖空调间歇运行模式下,基准建筑围护结构各分项的能耗分布比例。结果显示,在50%节能基础上,通过围护结构优化设计的节能极限约为60%,其中外窗的节能潜力最大,其次是外墙。还通过实验测试的方法对数值模拟方法和模拟结果进行了辅证。

The aim of the building energy efficiency design in Nanjing district goes from energy saving of 50% to 65%,as building enclosure structure takes on important energy-saving tasks,it is of great help to identify further the technical direction of the energy saving by exploring the saving potential of the building outside item by item. Taking into account the common features of the ordinary residential building of Nanjing district,this paper selects the three typical buildings as the baseline：then, calculate and analyze the energy consumption distribution of residential building enclosure structure in intermittent air conditioning run mode by numerical simulation. Results show that,on the basis of 50% energy-saving, the limit of building outside optimization design is 60%,in which the external windows the most,with the exterior wall next. Besides,this paper intensifies these methods and results of numerical simulation by experimental tests.