空调及换气系统运行对室内PM_(2.5)净化效果的影响

Influences of operating air conditioning and ventilation system on PM_(2.5) purification effect

为了研究室内空调与换气系统运行时空气净化器对室内空气的净化效果,采用试验研究和CFD模拟相结合的方法,研究了空调与换气系统运行对净化器将室内PM_(2.5)净化到ASHRAE规定的可接受室内空气质量的限值15μg/m^(3)的净化时间的影响。结果表明,净化器外加空调净化时间相比净化器单独运行时间缩短15.2%;净化器外加换气系统净化时间相比净化器单独运行时缩短了30.4%;三系统联合运行时的净化时间相比净化器单独运行时间缩短32.6%。结果可为研究空调与换气系统对空气净化器净化效果的贡献及室内空气净化方式提供参考。

In order to study the purification effect of air purifiers on indoor air during the operation of indoor air conditioning and ventilation system,a combination method of experimental research and CFD simulation was used to study the effect of air conditioning and ventilation system operation on the purification time of the purifier to purify indoor PM_(2.5) to the acceptable indoor air quality limit of 15μg/m^(3) specified by ASHRAE.The results show that the purification time of the purifier plus air conditioner was shortened by 15.2%compared with the purifier when running alone.The purification time of the purifier plus ventilation system is shortened by 30.4%compared with the purifier when running alone;The purification time when the three systems jointly operate is 32.6%shorter than that of the purifier when running alone.The study results can provide reference for exploring the contribution of air conditioning and ventilation systems to the purification effect of air purifiers and for indoor air purification methods.