高大空间气流组织研究——2010上海世博会主题馆西展厅空调通风系统研究

Study on air distribution of large space --study on air conditioning and ventilation system of 2010 Shanghai World Expo Theme Pavilion west exhibit hall

世博会主题馆西展厅东西跨度144m，南北跨度180m，选择侧面送风的送风方式。送风系统的覆盖面广和送风均匀是相互矛盾制约的一对参数，覆盖面越广，其覆盖范围内的场均匀度越不容易满足。本文通过气流组织模拟技术对送风气流进行模拟及参数优化，得出单层喷口无法做到覆盖如此大跨度的室内送风并保证人员活动区的温度场、速度场的均匀性，而双层喷口送风则能较好的满足。同时，双层喷口的风速尤其是上层喷口的风速一定要达到14m／s以上才有可能控制住展厅中部夏季的温度，保证室内人员的舒适性。

The side air outlet configuration was chosen in the design of the AC system of Expo Theme Pavilion west exhibit hall which spans 144 meters on east -west direction, 180 meters on north -south direction. The wide range of air supply and the uniformity of the air stream are a pair of conflicting parameters which constraint each other, and the more extensive coverage, the harder to meet the uniformity within the field. In this article the design process is described. Air flow simulation technology have been used to simulate air flow and conduct parameter optimization, showing that single deck jet can not cover such a large span of indoor air and to ensure people activity in the temperature field and velocity field uniformity while the double deck jet will be able to better meet the needs. At the same time, the outlet air velocity of double deck jet, especially the upper one, must reach at least 14m/s, thus it will be possible to make the temperature of the central hall under control, and to ensure the comfort of indoor workers in summer.