方型柱面贴附置换通风模式影响因素分析

Analysis on influence factors of square column attached displacement ventilation mode

为了有效利用建筑空间中量大面广的柱体,为建筑提供一种高效、舒适的通风模式,提出了一种基于方型柱面的新型贴附置换通风技术.采用实验验证后的RSM-IP模型,对不同送风温度和速度下房间温度场和速度场分布进行了数值模拟研究,同时分析了方柱宽度、柱子跨度和排风口位置对该通风模式的影响.研究表明,方型柱面贴附通风模式兼具混合通风与置换通风的优点,通过送风速度和温度等参数的合理设置,该通风模式能够在现有建筑、特别是大空间建筑通风空调系统中实地应用.

The columns are widely distributed within the architectural space. In order to effectively use them, a novel ventilationmode named square column attached displacement is presented, which can help improve ventilation efficiency and createcomfortable indoor environment. The velocity and temperature fields under different supply air velocities and temperatures arestudied by numerical simulation using RSM-IP turbulence model. In addition, the effect of square column width, column span and airoutlet location on airflow patterns also is researched, respectively. The current results show the square column attached displacementventilation model has the advantages of both mixing and displacement ventilation systems. In general, under the reasonableparameter settings of supply air velocity and temperature, this ventilation mode can be used in HVAC system, especially the onefocused on large space building.