城市辐射场热效应评价分析  

Evaluation analysis on thermal effect of urban radiation field

作　　者：刘大龙[1,2] 周玥[1] 文莉娟 孙恬 LIU Dalong;ZHOU Yue;WEN Lijuan;SUN Tian(Key Laboratory of Ecology and Energy Saving Study of Dense Habitat of Ministry of Education,Shanghai 200092,China;School of Architecture,Xi’an University of Architecture and Technology,Xi’an 710055,China)

机构地区：[1]高密度人居环境生态与节能教育部重点实验室,上海200092 [2]西安建筑科技大学建筑学院,西安710055

出　　处：《东南大学学报(自然科学版)》2025年第1期284-289,共6页Journal of Southeast University:Natural Science Edition

基　　金：高密度人居环境生态与节能教育部重点实验室开放课题资助项目(20230108);国家自然科学基金资助项目(51878536)。

摘　　要：为有效评估城市辐射场的环境热效应、完善城市热环境营造技术体系,开展了城市辐射场热效应评价研究。阐述了由下垫面和建筑表面组成的城市辐射场的形成方式,分析了辐射场的热作用过程,提出了一种基于下垫面和建筑表面的辐射场热效应评价方法。以西安夏季为例,开展了基于评价指标的辐射场热作用优化设计。结果表明:改善后的场地辐射热指数明显下降,沥青下垫面辐射热指数下降14.8%,空气温度下降3.0%;铺面砖下垫面辐射热指数下降24.3%,空气温度下降2.4%。城市辐射场热效应评价指标可有效表征城市辐射热作用,对研究城市热辐射作用、指导城市热环境设计具有借鉴作用。To effectively assess the environmental thermal effect of urban radiation field and improve the tech-nical system of urban thermal environment creation,the evaluation of the thermal effect of urban radiation field is studied.The formation of the urban radiation field composed of the subsurface and the building surface is described.The thermal process of the radiation field is analyzed.A method for evaluating the thermal effect of the radiation field based on the subsurface and the building surface is proposed.Taking Xi’an summer as an example,the optimized design of the thermal action of the radiation field based on the evaluation index is con-ducted.The results show that the radiant heat index of the improved site decreases significantly.The radiant heat index of the asphalt underlayment decreases by 14.8%and the air temperature reduces by 3.0%.The radi-ant heat index of the paving brick underlayment decreases by 24.3%and the air temperature reduces by 2.4%.The evaluation index of the thermal effect of urban radiation field can effectively characterize the role of urban radiation heat,which is useful for studying the role of urban thermal radiation and guiding the design of urban thermal environment.

关 键 词：城市热环境 城市辐射场 热效应评价 下垫面 建筑表面 

分 类 号：TU111[建筑科学—建筑理论]