流场与温度场耦合作用下对传统蒙古包建筑外表面对流换热的影响

Influence of Flow Field and Temperature Field on Convective Heat Transfer of External Surface of Traditional Yurt Building

为了研究室外空气温度、风速风向和太阳辐射耦合作用对供暖期传统蒙古包建筑外表面对流换热的影响。通过采用风速仪以及遮阳与非遮阳两套系统分别对建筑外表面进行了测试。研究了室外空气温度、风速风向以及太阳辐射对建筑外表面对流换热的影响规律。实验结果表明:遮阳系统可以有效地降低太阳辐射,进而减小建筑外表面的对流换热量;同时可以看出,建筑外表面对流换热系数与当地风速呈现指数关系,对流换热系数随风速的增大而增大。研究可以为内蒙古地区传统蒙古包建筑的能耗分析,以及模拟地区风环境和热环境的边界条件提供依据。

In order to study the effects of outdoor air temperature,wind speed and solar radiation on the convective heat transfer of the outer surface of traditional yurt buildings during heating period,the exterior surface of the building was tested by using an anemometer and two systems,sunshade and non-shade.The effects of wind speed and solar radiation on the convective heat transfer of the outer surface of the building were studied.The experimental results show that the shading system can effectively reduce the solar radiation and reduce the convective heat transfer on the outer surface of the building;At the same time,it can be seen that the convective heat transfer coefficient of the outer surface of the building has an exponential relationship with the local wind speed,and the convective heat transfer coefficient.The wind speed increases as the speed increases.It can be seen that this study can provide a basis for the analysis of energy consumption of traditional yurt buildings in Inner Mongolia and the simulation of boundary conditions between regional wind environment and thermal environment.