门窗缝隙渗风对冬季空调室内热环境影响的模拟研究

Simulation Research on the Influence of the Air Infiltration Through Door and Window Crack to the Indoor Environment in Winter

以办公室室内热环境为研究对象,通过数值模拟计算方法,根据上海地区冬季室外气象参数,模拟计算了冬季通过窗户水平和垂直缝隙进入室内的渗透空气对室内温度场和速度场的影响,并与无冷风渗透情况进行了对比分析。结果表明,冷风渗透对空调系统负荷及室内热环境影响较大,室内平均温度比无冷风渗透低2℃,建筑门窗的选用和安装应满足相关规范要求,窗户的水平缝隙相较垂直缝隙对扩散范围更广,对室内热环境影响更大。

Indoor environment in an office has been taken as the research object. Based on numerical simulation method and according to the outdoor meteorological parameters in winter in Shanghai, the influence of air infiltration through horizontal and vertical crack of window in winter to indoor thermal environment and air flow field are simulated, and compared with no infiltration condition. The results show that the air infiltration have greater impact on the thermal load of air-conditioning system and indoor thermal environment, the average temperature is 2℃ lower than the no infiltration condition. The selection and installation of doors and windows should meet the requirements of the relevant specification. Horizontal crack compared with vertical crack has a bigger influence on indoor thermal environment.