Dust Loading on Electrostatitically Charged Filters In a Standard Test and a Real HVAC System

Details

• Personal Author:
  Chae SJ ; Raynor PC
• Description:
  The efficiency and pressure drop of filters made from synthetic fibres carrying electrostatic charges and filters made from uncharged glass fibres were measured repeatedly for more than 19 weeks in operating HVAC systems. Results showed efficiency reductions as large as 40% for the filters made from charged fibres whereas the efficiency of filters made from uncharged fibres changed little. Clean filters were sent to a testing laboratory for efficiency measurements according to ASHRAE Standard 52.2-1999. When the filters experienced accelerated dust loading according to the ASHRAE procedure, the efficiency of both the glass and synthetic fibre filters increased. Efficiency reductions like those observed for the charged filters during actual use were not replicated by this standard test. [Description provided by NIOSH]
• Subjects:
  Aerosols Air Pollutants, Occupational Dust Environmental Monitoring Inhalation Exposure Occupational Health Particulate Matter Respiratory System Safety
• Keywords:
  Aerosol-particles Air-quality-measurement Airborne-dusts Airborne-particles Dust-measurement Dust-velocity Electrostatic-filters Filter-materials Inhalants Inhalation-studies Particle-aerodynamics Particle-counters Particulate-dust Particulates Quantitative-analysis Standards Statistical-analysis

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• ISSN:
  0015-1882
• Document Type:
  Text
• Funding:
  Grant
• Genre:
  Journal Article
• Place as Subject:
  Minnesota ; OSHA Region 5
• CIO:
  National Institute for Occupational Safety and Health (NIOSH)
• Topic:
  Workplace Safety & Health
• Location:
  North America
• Pages in Document:
  35-39
• Volume:
  40
• Issue:
  2
• NIOSHTIC Number:
  nn:20037440
• Citation:
  Filtr Sep 2003 Mar; 40(2):35-39
• Contact Point Address:
  Peter C. Raynor, University of Minnesota, School of Public Health, Division of Environmental and Occupational Health, Mayo Mail Code 807, 420 Delaware St. SE, Minneapolis, MN 55455
• Email:
  praynor@umn.edu
• Federal Fiscal Year:
  2003
• Performing Organization:
  University of Minnesota Twin Cities
• Peer Reviewed:
  False
• Start Date:
  20050701
• Source Full Name:
  Filtration & Separation
• End Date:
  20250630
• Collection(s):
  National Institute for Occupational Safety and Health
• Main Document Checksum:
  urn:sha-512:fd86a7061088e650c1bbcc1473ba06f6a14a0923f1ea74a5916a64c7f55e009dec7e47dde0755837b4c8a0f8a436cc0421cdf85f337b8a1e5634022b6cab4196
• Download URL:
  https://stacks.cdc.gov/view/cdc/188536/cdc_188536_DS1.pdf
• File Type:
  [PDF - 217.97 KB ]