不同气候区外窗对建筑能耗的影响分析

Influence of external windows on building energy consumption in different climate zones

通过TRNSYS软件模拟不同传热系数的建筑外窗,在严寒地区和夏热冬暖地区,对建筑冷、热负荷的影响。分析得出,节能外窗在严寒地区夏季空调能耗的节能率为8.9%,冬季采暖能耗的节能率为39%,全年总建筑能耗的节能率为31%;在夏热冬暖地区夏季空调能耗的节能率为8.0%,冬季采暖能耗的节能率为22%,全年总建筑能耗的节能率为8.6%。由此可见,外窗在严寒地区的节能效果要明显优于夏热冬暖地区。因此,在新建建筑的节能设计和既有建筑的节能改造中,严寒地区应更加重视外窗部分。

Through the TRNSYS software,we simulated the influence of different heat transfer coefficient of building exterior windows on the building's cold and heat load in severe cold area and hot summer and warm winter area.Through the simulation analysis,the energy saving rate of the energy consumption of air conditioning in the cold area in summer is 8.9%,the energy saving rate of heating energy consumption in winter is 39%,and the energy saving rate of total building energy consumption is 31%in the year.In the hot summer and warm winter area,the energy saving rate of air conditioning in summer is 8.0%,the energy saving rate of heating energy in winter is 22%,and the annual total building energy consumption rate is 8.6%.It is proved that different heat transfer coefficients have different effects on buildings in different areas,and the energy saving effect is obvious in cold area,and the energy saving effect is general in winter warm area in summer.It is clear that different regions provide important theoretical basis for energy saving windows when building energy saving renovation.