摘要
通过实测对建筑垂直外壁面温度的变化规律及外壁面的换热系数进行了研究。通过对某高层建筑南向立面表面温度等参数的实测研究发现,建筑垂直外壁面温差受建筑高度、风速、太阳辐射强度、空气温度的综合影响,通过对不同高度不同时刻的外壁面温差进行二级曲线拟合,得到了壁面温差计算式。且其最大误差不超过2.9℃。此外,建筑外表面换热放热系数受风速和建筑高度影响显著,在已有研究成果的基础上,利用试验结果回归分析得到了外壁面换热系数。
The variation of temperature and the heat transfer coefficient of vertical external wall of a building were studied.Experimental results showed that the temperature difference of the vertical external wall is affected by the building height,wind speed,solar radiation intensity and air temperature.Through the multidimensional fitting to the temperature difference of the vertical external wall at different times and different height,the relationship is obtained：with the standard deviation of no more than 2.9 ℃.Besides,the wind speed and the height of the building have a certain impact on the heat transfer coefficient of the exterior building surface.The heat transfer coefficient of the exterior building surface was obtained by regression analysis.
出处
《流体机械》
CSCD
北大核心
2011年第1期69-73,共5页
Fluid Machinery
基金
国家自然科学基金(50478113)
国家科技支撑计划(2006BAJ02A05)
上海市教委重点学科建设(J50502)资助
关键词
建筑外壁面温差
换热系数
实测研究
建筑高度
环境风速
temperature difference of external building surface
heat transfer coefficient
experimental study
building height
wind speed
