不同气流组织下室内PM2.5扩散规律研究

Study on the Diffusion Law of Indoor PM2.5 under Different Air Distribution

基于通风房间PM2.5质量守恒方程,通过实验研究,确定了实验环境下污染源中PM2.5的散发速率,并得到了上送上回,上送下回和地板送风气流组织下呼吸区PM2.5平均质量浓度随时间的预测函数。其中,在源释放阶段呈多项式函数形式,在PM2.5衰减阶段呈以e为底的指数函数形式。

Based on the PM2.5 mass conservation equation of the ventilated room,the PM2.5 emission rate of the pollution source in the experimental environment was obtained through experimental research.And the function of the average mass concentration of PM2.5 in the respiratory area under the airflow over time under the conditions of up supply with up return air,up supply with back return air and under floor air distribution are predicted.The prediction function took the form of a polynomial function in the source release stage,and took the form of an exponential function with e as the base in the PM2.5 attenuation stage.