摘要
为研究寒冷地区冷风侵入下的大空间地板辐射采暖效果,对某中小型高铁站候车厅空气温度、地板表面温度、地板制热量等参量进行了实测。经分析得到以下结论:冷风侵入下候车厅空气温度和地面温度均较低且空间分布不均匀,空气平均温度为16. 1~18. 9℃,地面平均温度为17. 4~21. 4℃,地面最大温差可超过12℃;冷风侵入下室内空气温度和非加热表面温度降低较快,而地面温度降低缓慢,因此两者之间的温差增大,这导致了地板总制热量的骤增,闭站期间地板制热量为40~60 W/m^2,运营期间局部最大可增大到120~130 W/m^2。结果表明,冷风作用下地板辐射采暖效果较差,候车厅舒适度范围为-0. 53^-1. 2;同时人员也会感受到由于吹风感和较低的地板表面温度引起的局部热不舒适。
In order to study the effect of radiant floor heating under the cold air infiltration of the large space,the parameters of a typical small-sized high-speed railway station in cold area are measured,such as air temperature,floor surface temperature,radiant floor heating capacity.Through the analysis of the parameters,the conclusions are as follows:The air temperature and the floor surface temperature in the waiting hall are both low under the cold air infiltration and the spatial distribution is uneven.The average air temperature is 16.1~18.9℃,while the average floor surface temperature is 17.4~21.4℃,the biggest temperature difference of the floor surface exceeds 12℃;The air temperature and uncooled surface temperature drop faster while the floor surface temperature drops slowly under the cold air infiltration,the increase of temperature difference between them leads to the sharp increase of the heating capacity,the heating capacity is 40~60 W/m^2 during the closure period,but it increases rapidly to 120~130 W/m^2 during the operation period.The results show that the effect of radiant floor heating is poor,and the comfort range is from-0.53^-1.2;Meanwhile,the occupants could feel local uncomfortable owe to the draught and the cool floor.
作者
刘刚
殷宣宣
徐弋
董伟星
黄文龙
LIU Gang;YIN Xuan-xuan;XU Yi;DONG Wei-xing;HUANG Wen-long(School of Architecture,Tianjin Key Laboratory of Building Physics Environmental and Ecological Technology,Tianjin University,Tianjin 300072,China;China Construction Engineering Design Group Corporation Limited,Beijing 100037,China)
出处
《建筑节能》
CAS
2020年第7期3-8,共6页
BUILDING ENERGY EFFICIENCY
基金
国家重点研发计划资助项目“目标和效果导向的绿色建筑设计新方法及工具”(2016YFC0700200)
关键词
冷风侵入
大空间
中小型高铁站
室内物理环境
地板辐射采暖
cold air infiltration
large space
medium and small-sized high-speed railway stations
indoor physical environment
radiant floor heating
