高效新型通风窗的最佳运行策略

Optimal Operation Strategy of Efficient New Ventilation Windows

本文选取新型通风窗送风量和通风器效率作为影响因素,采用fluent软件模拟的方法,研究了通风量分别为32 m^(3)/h、43 m^(3)/h、53 m^(3)/h和通风器过滤效率分别为40%、70.8%、90.3%条件下,室内PM_(2.5)和CO_(2)浓度改善的情况。根据模拟结果得出:当室内环境要求PM_(2.5)浓度在一级限值之下时,最佳的运行策略为高效过滤(90.8%)条件下53 m^(3)/h的通风模式运行185300 mins。若PM_(2.5)浓度取二级限值,高过滤效率在32 m^(3)/h、43 m^(3)/h和53 m^(3)/h的通风模式的最佳运行时间分别为70-160 mins、50-200 mins和40-300 mins。

In this paper,the air supply volume of the new ventilation window and the efficiency of the ventilator are selected as the influencing factors,and the fluent software simulation method is used to study the inprovement of indoor PM_(2.5) and CO_(2) concentration under the condition that the ventilation volume is 32 m^(3)/h,43 m^(3)/h,53 m^(3)/h and the efficiency of the ventilator is 40%,70.8%,90.3%,respectively.According to the simulation results,when PM_(2.5) concentration in the indoor environment is below the first-level limit,the best operation strategy is the ventilation mode of 53 m^(3)/h running 185-300 mins under the condition of high efficiency filtration(90.8%).If PM_(2.5) concentration is set to the second-level limit,the best running time of the ventilation mode with high filtration efficiency of 32 m^(3)/h,43 m^(3)/h and 53 m^(3)/h is 70-160 mins,50-200 mins and 40-300 mins,respectively.