太阳能光伏遮阳屋面的降温节能效果研究
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摘要
为研究太阳能光伏遮阳屋面的降温节能效果,选定广州市区某办公大楼太阳能光伏遮阳屋面进行降温实测,并对典型办公建筑进行全年能耗模拟分析。测试和模拟结果表明,太阳能光伏遮阳屋面能显著降低屋面接收的太阳辐射量、屋面温度以及顶层房间空调冷负荷。与无遮阳情况相比,在夏季晴天太阳能光伏遮阳屋面降低屋面接收太阳辐射量最大可达925 W/m~2,约为太阳总辐射量的90.2%;降低屋面温度最大可达6.1℃,对应降温率为14.3%;降低顶层房间全年冷负荷量高达10.48%,节能效果显著。
In order to study the cooling and energy-saving effect of solar photovoltaic shade roof, a solar photovoltaic shade roof of an office building in Guangzhou was selected for cooling measurement, with annual energy consumption simulation of a typical office building. Measurement and simulation results indicate that the solar photovoltaic shade roof can significantly reduce the received solar radiation of roof, roof temperature and air-conditioning cooling load of top room. In summer sunny days, compared with no shade, the solar photovoltaic shade roof can reduce the received solar radiation of roof up to 925 W/m~2, about 90.2% of the total solar radiation, and reduce the roof temperature up to 6.1 ℃, with the corresponding cooling rate of 14.3%, and reduce the annual cooling load of top room up to 10.48%, with significant energy-saving effect.
In order to study the cooling and energy-saving effect of solar photovoltaic shade roof, a solar photovoltaic shade roof of an office building in Guangzhou was selected for cooling measurement, with annual energy consumption simulation of a typical office building. Measurement and simulation results indicate that the solar photovoltaic shade roof can significantly reduce the received solar radiation of roof, roof temperature and air-conditioning cooling load of top room. In summer sunny days, compared with no shade, the solar photovoltaic shade roof can reduce the received solar radiation of roof up to 925 W/m~2, about 90.2% of the total solar radiation, and reduce the roof temperature up to 6.1 ℃, with the corresponding cooling rate of 14.3%, and reduce the annual cooling load of top room up to 10.48%, with significant energy-saving effect.
引文
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[2]余强.太阳能光伏建筑一体化的立面设计研究[D].杭州:浙江工业大学,2014.
[3]宋德萱,朱丹,史洁,等.高密度城区建筑光伏遮阳设计应用研究[J].新建筑,2015,(1):100-102.
[4]胡剑平,饶政华,廖胜明.光伏遮阳板与建筑一体化的综合节能效果分析[J].建筑节能,2012,40(6):33-37.
[5]庾汉成,罗成龙.光伏遮阳板与建筑一体化优化设计和性能研究[J].工业建筑,2009,(S1):31-34.
[6]GB50189—2015,公共建筑节能设计标准[S].
[7]GB12021.3—2010,房间空气调节器能效限定值及能效等级[S].
[8]徐江民.热反射屋面与种植屋面节能对比研究[D].重庆:重庆大学,2014.
[9]刘佳宁,黄琼,张颀.基于建筑能耗模拟的建筑立面被动设计研究[J].建筑节能,2018,(12):14-20.
[10]马路遥.广州地区佛甲草绿化屋顶实验与模拟研究[D].广州:华南理工大学,2018.