方柱面贴附置换通风模式效果及人员热舒适性研究

Ventilation effectiveness and human thermal comfort of displacement ventilation mode based on square column attachment

为有效解决现有大空间建筑传统混合通风模式存在的弊端,提出了一种基于方柱面贴附的置换通风模式。建立了包含4根方柱的数值计算模型,采用Airpak软件对不同送风温度和速度组合工况下该通风模式的通风效果和人员热舒适性进行了模拟研究,得到了空间内速度场、温度场、PMV及平均空气龄的分布特性。并与传统混合通风模式进行了通风效率、空气扩散性指标(ADPI)、PMV及呼吸区高度平均空气龄的对比分析。研究表明,方柱面贴附置换通风模式较现有混合通风模式通风效率高、人员热舒适性好。

In order to effectively solve the weakness of traditional mixed air distribution in large space buildings, presents a displacement ventilation mode based on square column attachment. Establishes a numerical simulation model including four square columns. Investigates the ventilation effectiveness and human thermal comfort at different air supply velocities and temperatures using Airpak software. Obtains the distribution characteristics of velocity field, temperature field, PMV and mean air age. Compares ventilation efficiency, air diffusion performance index （ADPI）, PMV and mean air age in the respiratory region with traditional mixed air distribution. The results show that this kind of ventilation mode has a superior performance of ventilation efficiency and human thermal comfort than the traditional mixed air distribution.