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为研究旋流风口送风对上海某建筑多功能展厅的效果,利用CFD方法对冬、夏季可调式旋流风口的典型角度工况(供热、供冷工况分别为90°、45°)进行模拟,得到了室内流场、温度场、PMV-PPD及空气龄分布。结果表明:旋流风口能够较好地满足冬、夏工况的需要,水平温度、速度场分布均较为均匀。由于冬夏季角度设置差异,垂直方向上冬季工况的最大温差小于夏季工况,射流距离大于夏季工况,而夏季气流的水平扩散效果优于冬季。基于PMV-PPD和空气龄的热环境数值预测与评价,可得出冬季的热舒适感觉优于夏季,两者空气龄差异较小,展厅内的空气品质相对良好。
In order to study the effect of cyclone tuyere air supply on a multi-purpose exhibition hall of a building in Shanghai, the typical angle conditions of the adjustable cyclone tuyere for winter and summer (heating and cooling conditions are 90 ° and 45 ° respectively) After simulation, the indoor flow field, temperature field, PMV-PPD and air age distribution were obtained. The results show that the swirl tuyere can meet the needs of winter and summer conditions well, and the distribution of horizontal temperature and velocity field are more uniform. Due to the difference in winter and summer setting, the maximum temperature difference in winter is smaller than that in summer, and the jet distance is greater than that in summer, while the summer air flow is better than winter. Based on the PMV-PPD and air temperature numerical prediction and evaluation of the thermal environment, it can be concluded that the thermal comfort in winter is better than that in summer, with little difference in air age and relatively good air quality in the exhibition hall.