臭氧对中央空调系统及室内自然菌的消毒效果

Disinfection Effect of Ozone on Natural Bacteria in Indoor Air and Central Air Condition Ductwork

目的探讨臭氧对中央空调系统及室内自然菌的消毒效果。方法在中央空调送风主管道口安装臭氧发生器,借助中央空调在送风时的动力将产生的臭氧送至各条分支管道和各个房间,在臭氧消毒前、后分别测定房间内送风管道口及室内空气中自然菌的数量,然后计算消亡率。结果臭氧作用60min后,中央空调管道送风口自然菌的消亡率可达60%～90%;室内空气中自然菌的消亡率为-40.00%～71.43%。结论臭氧可有效地杀灭中央空调送风管道中的自然菌,但在较低浓度时对有人活动的室内的自然菌的杀灭效果不明显。

Objective To study the disinfection effect of ozone on the natural bacteria in indoor air and the central air condition ductwork. Methods Ozonizer was installed on the outlet of central air condition main pipeline and when it began to send breeze, ozone was taken to each branch piping and each room. Then, at the vents of pipeline and in the rooms, the quantity of the natural germs was examined before and after disinfection respectively. The death rate was calculated. Results After 60 minutes of ozone disinfection, the death rate of the natural germs at the vents of central air condition was 60%-90%, that of indoor air was -40.00%-71.43%. Conclusion Ozone can effectively kill the natural germs in ductwork of central air condition, but when the concentration of ozone is lower and there are people in the room, the efficiency will decrease.