Experimental study on efficiency of nanometer photocatalytic air cleaner

  Objective   To study the purifying efficiency of nanometer photocatalytic air cleaner to decontaminate formaldehyde and TVOC in test chamber and simulated room.

  Methods   According to the process of National Standard "Air Cleaner" (GB/T 18801-2002), the clean air deliery rate and cleaning efficiency were calculated.

  Results   The cleaning efficiency of air cleaner in test chamber and simulated room to formaldehyde and TVOC was 21.0%, 16.7% and 46.8%, 39.2% respectively; In two different environment, the eliminating rate of air cleaner of 3 h to formaldehyde and TVOC was 54.1%, 90.5% and 43.8%, 72.0% respectively.

  Conclusion   This nanometer photocatalytic air cleaner presented a centain purifying efficiency to hazardous gases such as formaldehyde and TVOC in indoor air.The purify effect of TVOC was better than that of formaldehyde.