净化器送风仰角对房间各区域PM_(2.5)净化时间影响

Effect of the Air Supply Elevation Angle of the Purifier on the PM_(2.5) Purification Time in Each Area of the Room

为解决净化器对房间各处净化不均匀的问题,本文对房间进行分区,通过实验与模拟相结合的方法研究净化器在不同送风风速下,送风仰角角度对房间各区域PM_(2.5)净化到15μg/m^(3)的净化时间(以下所述PM_(2.5)净化时间均为PM_(2.5)净化到15μg/m^(3)所需的时间)的影响.结果表明:送风风速为3 m/s时,仰角角度从0°增大到35°可使房间中部的PM_(2.5)净化时间减小6%,但会使房间前部和后部的PM_(2.5)净化时间增大8%;送风风速为1.5 m/s时,仰角角度从0°增大到55°最多可使PM_(2.5)净化时间减小21%;送风风速为0.75 m/s时,增大仰角角度可使房间中部和后部的PM_(2.5)净化时间减小9%,但会使房间前部的PM_(2.5)净化时间增大4%.本研究可为今后进一步研究,以及净化器的使用提供参考和建议.

In order to improve uneven purification effects in the room by the purifier,this paper combined experiments and simulations to study the purification time of room PM_(2.5) controlled down to 15μg/m3 by the purifier in each area of the room at different supply air wind speeds and supply air elevation angles.The PM_(2.5) purification time mentioned below refers to the time required for PM_(2.5) to be purified to 15μg/m3.The results show that when the supply air speed is 3 m/s,increasing the elevation angle from 0°to 35°can reduce the PM_(2.5) purification time in the middle of the room by 6%,but it will increase the PM_(2.5) purification time in the front and rear of the room by 8%;when the supply air speed is 1.5 m/s,increasing the elevation angle from 0°to 55°can reduce the PM_(2.5) purification time by up to 21%;when the supply air speed is 0.75 m/s,increasing the elevation angle can reduce the PM_(2.5) purification time in the middle and rear of the room by 9%,but will increase the PM_(2.5) purification time in the front of the room by 4%.This research can provide references and suggestions for future research and the use of purifiers in a better way.