海绵城市对缓解城市热岛效应的效能测试分析
首发时间:2018-08-01
摘要:在现代化海绵城市的建设中,大面积铺装透水性材料,能够形成局部的空气环流,影响着城市微气候得变化,削减城市周围地段的热岛效应。本文以济南市海绵城市试点区为例,对铺设透水材料上方空气的温湿度进行定量测试,分析其对缓解热岛效应的效能。结果显示:城市气温在很大程度上受下垫面温度的影响,且不同地段路面对太阳辐射的吸收、反射和热量再分配的能力随着下垫层的热力性质和辐射性质不同而存在差异,这导致下垫面温度也不同。用透水性材料作为下垫面,能降低地面温度,并适当升高地面上方的湿度,从而改变微气候,有效缓解热岛效应。
关键词: 建筑环境与能源应用工程; 热岛效应 实验分析 济南市 海绵城市 透水路面
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Analysis of effectiveness test of sponge city in alleviating urban heat heat island effect
Abstract:In the construction of a sponge city, large-area water-permeable materials can form local air circulation, affect the urban micro-climate, and reduce the heat island effect in the surrounding areas of the city. This paper takes the pilot city of the sponge city of Jinan City as an example to quantitatively test the temperature and humidity of the air above the permeable material and analyze its effectiveness in alleviating the heat island effect. The results show that the urban air temperature is greatly influenced by the temperature of the underlying surface. Because of diverse radiant and thermal properties, different underlying surfaces lead to different absorption, reflection, and heat redistribution of solar radiation, which results in temperature difference. Using a water-permeable material as the underlying surface can decline the surface temperature and appropriately raise the humidity above the ground,so that it can change the microclimate and mitigate the heat island effect.
Keywords: Building Environment and Energy Application Engineering Heat Island Effect experiment analysis Jinan City Sponge City permeable pavement
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