平均辐射温度现场实测方法对比分析与修正研究  

Measurement Methods for Mean Radiant Temperature:A Comparison and Modification

作　　者：杜晶 刘京 马晓钧[1] 李春旺[1] 梁春雨 DU Jing;LIU Jing;MA Xiaojun;LI Chunwang;LIANG Chunyu(College of Biochemical Engineering,Beijing Union University,Beijing 100023,China;School of Architecture,Harbin Institute of Technology,Harbin 150090,China;Key Laboratory of Cold Region Urban and Rural Human Settlement Environment Science and Technology,Ministry of Industry and Information Technology,Harbin 150090,China;ZhenHua Oil Co.,Ltd,Beijing 100037,China)

机构地区：[1]北京联合大学生物化学工程学院,北京100023 [2]哈尔滨工业大学建筑学院,哈尔滨150090 [3]寒地城乡人居环境科学与技术工业和信息化部重点实验室,哈尔滨150090 [4]振华石油控股有限公司,北京100037

出　　处：《北京联合大学学报》2023年第4期78-86,共9页Journal of Beijing Union University

基　　金：北京市教育委员会科研计划一般项目“城市下垫面空间异质性影响下的室外微气候效应研究——以北京为例”(KM202311417007);北京联合大学新进博士孵化项目“高密度城市空间热环境动态模型及调控方案研究”(ZK20202202);国家自然科学基金重点项目“严寒地区城市微气候调节原理与设计方法研究”(51438005)。

摘　　要：以严寒地区不同开敞程度下的室外空间为研究对象,以六方向法得到的平均辐射温度(T_(mrt)(six))为基准值,对冬季及夏季条件下,球体温度计法所确定的平均辐射温度(T_(mrt)(g))与基准值之间的差异进行对比分析。基于空气温度和球体温度,定义了当量球体温度,实现了对球体温度计法的修正。结果表明:球体温度计法对夏季平均辐射温度的预测准确性高于冬季,在夏季条件下,T_(mrt)(g)与T_(mrt)(six)的偏差更小;在相对开敞的区域内,T_(mrt)(g)与T_(mrt)(six)的相关程度更高,相关系数高于0.95。基于当量球体温度的球体温度计修正方法明显提高了平均辐射温度计算的准确性,修正后的T_(mrt)(g)′与T_(mrt)(six)之间的差值在夏季的分布范围为±8℃;冬季时,T_(mrt)(g)′与T_(mrt)(six)之间的差值分布在±10℃以内。This study focuses on different outdoor spaces with various degrees of opening in the severely cold region and uses the mean radiant temperature(T_(mrt)(six))obtained by the six-direction method as the reference value.It compares the difference between mean radiant temperature(T_(mrt)(six))derived from globe thermometer method(T_(mrt)(g))and the reference value in winter and summer.Furthermore,based on air temperature and globe temperature,equation globe temperature is defined,which achieves the modification of globe thermometer method.Results shows that accuracy of determining mean radiant temperature for globe thermometer method is higher in summer than in winter,with a lower standard deviation between T_(mrt)(g)and T_(mrt)(six)during summer.At spaces with relatively higher degree of opening,correlation between T_(mrt)(g)and T_(mrt)(six)is higher with correlation coefficient exceeding 0.95.Accuracy of determining mean radiant temperature is improved significantly by modifying globe thermometer method on the basis of defining Equivalent Globe Temperature.In detail,difference ranges between modified T_(mrt)(g)′and T_(mrt)(six)is within±8 and±10℃in summer and winter,respectively.

关 键 词：平均辐射温度 六方向法 球体温度计法 严寒地区 修正 

分 类 号：TU832[建筑科学—供热、供燃气、通风及空调工程]