| 摘要: |
| 利用屋顶绿化隔热，对降低夏季空调耗能尤为重要。目前中国还缺少针对其日照环境差异下夏季昼夜热效应的全面考察研究。借助建筑日照分析将试验屋顶划分为4个日照区间，利用HOBO小气象站测取环境温度数据、热电偶昼夜连续测取不同日照区间多点温度数据，综合分析上海佛甲草模块式屋顶绿化的昼夜隔热效果。研究结果表明：试验屋顶绿化在夏季白天的隔热效果明显，最大屋面降温值可达28℃以上，日照越强隔热效果越明显；夜间的散热效果不及裸屋面；且存在最高温度时滞效应。其对建筑节能的昼夜综合效应，需要结合建筑屋顶构造自身的保温隔热性能、屋面日照条件以及建筑的昼夜使用节律做进一步的深入研究，以期达到屋顶绿化经济价值与节能效益的最大化。 |
| 关键词: 风景园林 屋顶绿化 隔热保温 佛甲草 上海 |
| DOI： |
| 分类号:TU986 |
| 基金项目:高密度人居环境生态与节能教育部重点实验室2017自主与开放课题 |
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| Energy Saving Effects of Sedum Module Green Roof in Shanghai Through Day and Night in Summer |
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LUO Tianqing, ZHOU Tinghui, LIU Dong, HUANG Lijun
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Tongji University
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| Abstract: |
| Thermal insulation of green roof is particularly important for reducing energy consumption of air conditioners in summer. At present, there is no comprehensive study on the diurnal thermal effects in summer under various sunshine environments. This study analyzes the diurnal heat insulation effects of the sedum module green roof in Shanghai. The trial roof was divided into four sunshine zones. The environment temperature data were monitored and collected by HOBO U30 USB Station. The multi-point temperature data were continuously measured by thermocouples in different sunshine zones day and night. The results show that 1) during the daytime, the heat insulation effect of the trial green roof is obvious (more than 28℃ cut of surface temperature in maximum) and the stronger the sunshine, the more obvious the effect; 2) The heat dissipation effect of the green roof is not as good as the bare roof during the night; and 3) There are delays of the highest temperature appearance for the green roof. From the view of comprehensive diurnal building energy conservation, further studies are needed on the thermal insulation performance of roof structure, the sunshine condition of roof and the daily use of buildings to optimize the investment and energy efficiency of green roof. |
| Key words: landscape architecture green roof thermal insulation Sedum lineare Shanghai |
| 引用本文: | 骆天庆,周婷慧,刘东,黄丽君.上海佛甲草模块式屋顶绿化夏季昼夜节能效应研究[J].风景园林，2019，26（5）：94-98. |
| LUO Tianqing,ZHOU Tinghui,LIU Dong,HUANG Lijun.Energy Saving Effects of Sedum Module Green Roof in Shanghai Through Day and Night in Summer[J].Landscape Architecture Journal, 2019, 26(5):94-98. |
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