基于遥感影像和ENVI-met软件的广州市高校水体降温研究  

A study on water body cooling in universities of Guangzhou based on remote sensing images and ENVI-met

作　　者：郭卫宏[1,2,3,4] 丁君 薛瑶瑶 王丽 Guo Weihong;Ding Jun;Xue Yaoyao;Wang Li

机构地区：[1]华南理工大学建筑学院 [2]华南理工大学节能技术研究院 [3]华南理工大学建筑设计研究院有限公司GWH+工作室 [4]华南理工大学亚热带建筑与城市科学全国重点实验室 [5]东南大学建筑学院 [6]都灵理工大学建筑学院

出　　处：《当代建筑》2025年第1期130-135,共6页Contemporary Architecture

摘　　要：本文以广州市18所高校为例,通过遥感技术获取各高校在2023年8月份的地表温度,选取水体均温、降温幅度、降温距离作为评价指标,分析水体面积、水体形状、周边环境对校园水体降温效应的作用机制。为了深入分析各影响因素的具体作用效力,本文构建理想模型,对ENVImet软件模拟结果进行数值拟合,分析拟合模型的变化特征,获得降温效益的最优设计值,以期为校园水体的规模、形状及周边环境设计提出优化建议,从而有效缓解水景空间及校园的高温状况,提升校园环境舒适度。This paper takes 18 universities in Guangzhou as examples to investigate the surface temperatures of these institutions in August 2023 by using remote sensing technology.It selects average water temperature,temperature reduction magnitude,and cooling distance as evaluation indicators to analyze the mechanisms of water body size,shape,and surrounding environment affecting the cooling effect of campus water bodies.The results indicate that as the area of the water body increases,the average water temperature decreases,leading to a significant self-cooling effect of the water body,accompanied by greater temperature reduction magnitude and distance.The shape index of areal water bodies,which is a measure of their form complexity,primarily falls within the range of 1.1 to 1.8,indicating relatively low shape complexity.The correlation between shape index and both average water temperature and temperature reduction magnitude is not substantial.Linear water bodies,characterized by a length-to-width ratio greater than 8 and shape index as high as 5.0,exhibit tortuous and complex edges,thereby influencing both water temperature and temperature reduction magnitude.Due to their narrower widths,linear water bodies possess unstable self-cooling potential and are prone to fluctuations influenced by the surrounding environment.Consequently,the correlation between temperature reduction magnitude and the proportion of surrounding land use is weak,while the cooling distance is more significantly affected by the surrounding environment.This phenomenon is also observed in smaller areal water bodies.Conversely,large areal water bodies exhibit stable self-cooling potential and are less susceptible to changes in water area.As green spaces increase,water temperatures gradually decrease,and the temperature reduction magnitude of the water bodies becomes greater.To delve deeper into the specific effects of various influencing factors,this paper constructs an ideal model to numerically fit the simulation results obtained from the ENVI-met s

关 键 词：校园水体 热环境 地表温度 指标优化 

分 类 号：TU11[建筑科学—建筑理论]