建筑临墙开窗对室内热压通风的模拟研究

Simulation Study on the Indoor Thermal Pressure Ventilation by two Windows Open Near the Wall of the Building

根据进风口在墙壁上开口位置的不同,建筑开窗形式分为对墙开窗、临墙开窗、单侧墙开窗。运用airpak软件针对建筑进风口形式为临墙开窗形式下的单热源室内热压通风进行了模拟研究。通过改变进出风口中心高度差及进出风口面积比来分析中和面高度、有效热量系数、通风量、速度场及温度场的变化。结果展示了临墙开窗形式在上述两种情况下对应的各项参数的变化状况,并分析了进出风口中心高度差变化情况下工作面高度处速度场及温度场的变化。研究结果为临墙开窗形式下的热压通风提供了参考。

According to the different opening positions of the air inlet on the wall,the form of building windows is divided into two windows opening in opposite walls,two windows opening in near walls and one window opening in one wall.A simulation study has been made by Airpak of the indoor thermal pressure ventilation of buildings with single heat source in the form of two windows opening in near walls.the changes of neutral plane height,effective heat coefficient,ventilation rate,velocity field and temperature field are analyzed by changing the central height difference of the air inlet and outlet and the area ratio of the air inlet and outlet.The results show the changes of the corresponding parameters of the form of two windows opening in near walls under the above two conditions,and analyze the changes of the velocity field and temperature field at the height of the working plane under the change of the central height difference of the inlet and outlet.The result provides a reference for the thermal pressure ventilation under the form of two windows opening in near walls.