| 绿化屋顶热效应的观测试验 |
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| 引用本文： | 孙挺,倪广恒,唐莉华,张书函,孔刚.绿化屋顶热效应的观测试验[J].清华大学学报(自然科学版),2012(2):160-163. |
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| 作者姓名： | 孙挺 倪广恒 唐莉华 张书函 孔刚 |
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| 作者单位： | 清华大学水利水电工程系水沙科学与水利水电工程国家重点实验室;北京市水利科学研究所 |
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| 基金项目： | 水利部公益性行业科研专项基金资助项目(200801108);水沙科学与水利水电工程国家重点实验室课题(2009-TC-1) |
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| 摘 要： | 为了评价绿化屋顶对城市微环境的热效应影响,利用基于轻质高透水性基质材料的绿化屋顶和普通屋顶,开展了近10个月对比观测,对温度、热阻值(R值)等进行了定量分析。结果显示:观测期内绿化屋顶的屋面温度波动降低54%,在秋、冬和春季表现出保温效果,夏季则表现出降温效果,并将屋顶整体热阻值提高33%～200%。绿化屋顶对降低建筑能耗、改善人居环境具有积极作用。
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| 关 键 词： | 绿化屋顶 屋面温度 热效应 热阻值 城市微气候 |
Experimental study of the thermal performance of a green roof |
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| SUN Ting,NI Guangheng,TANG Lihua,ZHANG Shuhan,KONG Gang.Experimental study of the thermal performance of a green roof[J].Journal of Tsinghua University(Science and Technology),2012(2):160-163. |
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| Authors: | SUN Ting NI Guangheng TANG Lihua ZHANG Shuhan KONG Gang |
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| Institution: | 1.State Key Laboratory of Hydroscience and Engineering,Department of Hydraulic Engineering,Tsinghua University,Beijing 100084,China; 2.Beijing Hydraulic Research Institute,Beijing 100044,China) |
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| Abstract: | The thermal impact on the urban microenvironment of a lightweight aggregate-based green roof was studied by parallel experiments for 10 months to observe the temperatures and estimate the R-value of both green and conventional roofs.During the experimental period,the green roof significantly reduced temperature fluctuations by 54%,provided effective thermal insulation in the winter,protected the roof membrane from rapid heating in the summer,and increased the R-value of the ensemble roof system by 33%~200%.The results show that the green roof is capable of protecting the roof system from extreme temperatures and improving the urban microclimate. |
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| Keywords: | green roof surface temperatures thermal performance R-value urban microclimate |
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