通风墙体引风性能的实验研究

Experimental Research on Air Induced Performance of Ventilated Walls

通过实验考察了具有过滤功能的通风墙体的引风性能及在建筑中使用的可行性。实验结果表明,风压较小时,热压的驱动作用比风压明显;随着风压的增加,风压驱动的作用显著增强。热压和风压的耦合作用工况条件下的引风量均大于风压和热压的单独作用,且温度相对较低时,增大风压对引风量有显著的影响;而热压非常强时,热压起到主要的驱动作用。

Through experiments, this paper examined the air induced performance of ventilated wall with the filtering function and the feasibility of its using in the building. The experimental results showed that the driving effect of hot pressing was more obvious than the wind pressure if the wind pressure was small, and the driving effect of air pressure has significantly enhanced with the increase of wind pressure. Air-draft amount under the coupled action of thermal pressure and wind pressure was greater than that of the single action of wind pressure and hot pressing. The increase in air pressure has a significant effect on air-draft amount at relatively low temperature, and hot pressing played a main driving role when hot pressing was very strong.