Evaluation of the Filtration Efficiency of Aerosol Particles of the Commercial Air Purifiers for indoor use

Authors

  • Visut Asanavijit Research Unit of Applied Electric Field in Engineering, College of Intrgrated Science and Technology
  • Panich Intra Research Unit of Applied Electric Field in Engineering, College of Intrgrated Science and Technology
  • Wisanapat Rattanachan Research Unit of Applied Electric Field in Engineering, College of Intrgrated Science and Technology
  • Pattanun Pattanun Faculty of Education, Kasetsart University

Keywords:

Aerosol, PM2.5, PM10, Air Purifier

Abstract

The aim of this paper is to evaluation of the filtration efficiency of aerosol particles of the commercial air purifiers for indoor use purifiers with different sizes and principles e.g., 4 electrostatic air purifiers and 1 HEPA filter air purifier. In this study, the filtration efficiency of aerosol particles of five commercial indoor air purifiers were tested by the ANSI/AHAM AC-1-2015 standard test method with the aerosol particle generators inside the 6 m × 6 m × 3 m test chamber. The real-time particle counter was used for measuring the number and mass concentrations of aerosol particles inside the test chamber within testing time of 120 min It was found from the experiment that the decrease in the mass concentration of the aerosol particles is proportional to the increase in testing time. Due to the longer testing time, room air that still retains suspended aerosol particles recirculates through the air purifier at a constant air volumetric flow rate of the purifier for the duration of the testing time. The maximum particle filtration efficiency in the case of combining particle natural decay of the A, B, C, D and E purifiers is about 61.30, 65.63, 81.73, 77.39 and 72.755 % at 120 min respectively, and the maximum particle filtration efficiency in the case of excluding particle natural decay of the A, B, C, D and E purifiers is about 13.19, 22.91, 59.02, 49.03 and 38.88 % at 120 min respectively. Finally, in this experiment, it was shown that the CADR values of A, B, C, D and E purifiers were about 4.47, 7.58, 24.36, 17.82 and 13.7 ft3/h, respectively.

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Published

2021-12-29

How to Cite

[1]
V. . Asanavijit, P. . Intra, W. . Rattanachan, and P. . Pattanun, “Evaluation of the Filtration Efficiency of Aerosol Particles of the Commercial Air Purifiers for indoor use”, Eng. & Technol. Horiz., vol. 38, no. 4, pp. 166–177, Dec. 2021.

Issue

Vol. 38 No. 4 (2021): October - December

Section

Research Articles

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