Human thermal comfort under lateral radiant asymmetries  

作　　者：Siru Gao Liu Yang Mingyang Shi Shengkai Zhao Xiang Zhou Yongchao Zhai 

机构地区：[1]State Key Laboratory of Green Building in Western China,Xi’an University of Architecture and Technology,Xi’an,Shaanxi 710055,China [2]College of Architecture,Xi’an University of Architecture and Technology,Xi’an,Shaanxi 710055,China [3]School of Mechanical Engineering,Tongji University,Shanghai 200092,China

出　　处：《Energy and Built Environment》2023年第4期432-444,共13页能源与人工环境（英文）

基　　金：The work was supported by"The 13th Five-Year"National Key R&D Program of China(2018YFC0704500);the National Natural Science Foundation of China under Grant No.51778439.

摘　　要：Occupants’thermal comfort in buildings may be affected by the cool wall and warm wall,which is attributed to the effect of asymmetric radiation.However,the previous majority of the researches on asymmetric radiation were mainly about the comfort limits under thermally neutral condition within 1∼1.5 h but had not considered the effect of exposure duration and the condition beyond neutral.To investigate the human thermal comfort under an asymmetric environment caused by the cool wall and warm wall,forty-four subjects were exposed to neutral air temperature with lateral radiant asymmetries in winter and summer for 3 h.The results indicated that the cool wall caused thermal discomfort easier than the warm wall because the thermal sensation decreased and deviated from neutral with time.Subjects’sensitivity of local parts to asymmetric radiation was affected in the conditions beyond neutral,thus their acceptability to asymmetric radiation decreased.The currently used limits of radiant temperature asymmetry tended to underestimate the local discomfort due to the walls.For the conditions tested,The limits of 5%dissatisfaction in radiant temperature asymmetry were 4.4°C(180 min)and 1.8°C(60 min and 120 min)for the warm wall,and 1.8°C at 60 min for the cool wall.

关 键 词：Asymmetric radiation Thermal condition Exposure duration Thermal comfort Comfort limits 

分 类 号：O57[理学—粒子物理与原子核物理]