Performance testing method of air cleaners in environmental test chamber —Discussion on several problems about air cleaners (5)

Discusses the layout of testing points and the detection method of air cleaners in an environmental test chamber. Points out that the tested air cleaner should not be placed in the center of the test chamber. There should evenly arrange not less than 11 testing points at 0.8 m height in front of the air cleaner, and the average particle concentration should be calculated based on each testing point data obtained by sensors at the same time. The attenuation coefficient can be obtained by graphical determination method according to the ratio of the average concentration and the initial concentration.