Low-e玻璃对空调负荷及建筑能耗的影响

Influence of Low-e glass on air conditioning load and building energy consumption

分别根据6种传热系数和遮阳系数不同的窗玻璃对2栋建筑进行空调负荷和能耗模拟计算,结果表明,在深圳市,对空调负荷以及全年能耗影响最大的是玻璃的遮阳系数,其次是传热系数,Low-e中空玻璃与普通3mm白玻璃相比,空调负荷可以降低20%左右,全年空调能耗降低24%左右;在北京市,使用Low-e玻璃可以降低32%的空调能耗和20%的空调负荷,但是却增加了2%的供暖能耗。

Simulates and calculates air conditioning load and building energy consumption of two buildings using six kinds of window glass with different heat transfer coefficient and shading coefficient. The result shows that the shading coefficient of glass has more influence on air conditioning load and annual energy consumption than the heat transfer coefficient in Shenzhen. As a result, the air conditioning load can be 20% lower when the 3 mm ordinary clear glass is replaced by Low-e glass, and the building energy consumption also experiences 24% decrease. However, the energy consumption and air conditioning load can be 32% and 20% lower respectively, and the heating energy consumption increases 2% at the same time in Beijing.