高温热源建筑室内不对称辐射热环境评价指标  

Evaluation Index for Indoor Asymmetric Radiant Environment with High⁃temperature Heat Source

作　　者：高洁 李莹莹 韦会东 李瑞捷 李珂嘉 GAO Jie;LI Yingying;WEI Huidong;LI Ruijie;LI Kejia(College of Civil Engineering and Architecture,Dalian′University,Dalian 116622,Liaoning,China)

机构地区：[1]大连大学建筑工程学院,辽宁大连116622

出　　处：《建筑科学》2022年第10期59-64,71,共7页Building Science

基　　金：国家自然科学基金项目(51808091);辽宁省自然科学基金项目(2020-BS-265);大连高层次人才创新支持计划(2020RQ025)。

摘　　要：本文以典型的自然通风房间为研究对象,对工作人员的热感受和室内热环境参数进行了主观评价和客观测量。结果表明,当热源表面温度从50℃上升到250℃时,距离热源1 m及2 m处不对称辐射温度分别增加了58.0~58.6℃和32.0~32.1℃,而平均辐射温度与空气温度的差值分别增加了15.9~16.8℃和1.3~2.4℃。此外,受试者主观热感受随平均辐射温度与空气温度差值的变化曲线特征与随不对称辐射温度的变化曲线一致。因此,平均辐射温度与空气温度的差值可以作为评价高温热源建筑室内不对称辐射热环境的一个潜在指标。Taking a typical naturally ventilated room as the research object,this paper performed the subjective evaluation and objective measurement of thermal sensation and indoor thermal environment parameters.The results show that when the surface temperature of the heat source increases from 50℃ to 250℃,the asymmetrical radiation temperature at 1 m and 2 m away from the heat source increases by 58.0~58.6℃ and 32.0~32.1℃,respectively,and the difference between the mean radiant temperature and the air temperature increases by 15.9℃~16.8℃ and 1.3~2.4℃,respectively.In addition,the characteristics of the variation curve of subjects'subjective thermal sensation with the difference between average radiation temperature and air temperature are consistent with the variation curve of subjects'subjective thermal sensation with asymmetric radiation temperature.Therefore,the difference between mean radiant temperature and air temperature can be used as a potential index to evaluate the indoor asymmetric radiant heat environment with high⁃temperature heat source buildings.

关 键 词：高温热源 自然通风建筑 室内热环境 不对称辐射温度 平均辐射温度 

分 类 号：TU831[建筑科学—供热、供燃气、通风及空调工程]