Effect of particle-size variation on filtration efficiency measured by the HEPA-filter quality-assurance test
Abstract
A theoretical model has been used to calculate the filtration efficiency that would be indicated by the photometer for challenge aerosols of different size distributions and HEPA filters with different efficiencies as functions of particle size. The model compares the calculated overall efficiency indicated by the photometer with efficiencies calculated with respect to particle number and mass. This calculation assumes three aerosol distributions previously measured at the Filter Test Facilities and four different filtration efficiency versus size curves. The differences in efficiency measured by the QA test procedure and the efficiencies with respect to aerosol mass and number have been calculated for a range of different size particles. The results of these calculations are discussed.
- Authors:
- Publication Date:
- Research Org.:
- Los Alamos National Laboratory (LANL), Los Alamos, NM (United States)
- OSTI Identifier:
- 5139041
- Report Number(s):
- LA-UR-82-2280; CONF-820833-1
ON: DE82019552; TRN: 82-019210
- DOE Contract Number:
- W-7405-ENG-36
- Resource Type:
- Technical Report
- Resource Relation:
- Conference: 17. DOE nuclear air cleaning conference, Denver, CO, USA, 1 Aug 1982
- Country of Publication:
- United States
- Language:
- English
- Subject:
- 54 ENVIRONMENTAL SCIENCES; AIR FILTERS; EFFICIENCY; FILTRATION; QUALITY ASSURANCE; EXPERIMENTAL DATA; PARTICLE SIZE; PARTICULATES; PERFORMANCE TESTING; RESPONSE MODIFYING FACTORS; DATA; EQUIPMENT; FILTERS; INFORMATION; NUMERICAL DATA; PARTICLES; POLLUTION CONTROL EQUIPMENT; SEPARATION PROCESSES; SIZE; TESTING; 500200* - Environment, Atmospheric- Chemicals Monitoring & Transport- (-1989); 500300 - Environment, Atmospheric- Radioactive Materials Monitoring & Transport- (-1989)
Citation Formats
Tillery, M I, Salzman, G C, and Ettinger, H J. Effect of particle-size variation on filtration efficiency measured by the HEPA-filter quality-assurance test. United States: N. p., 1982.
Web. doi:10.2172/5139041.
Tillery, M I, Salzman, G C, & Ettinger, H J. Effect of particle-size variation on filtration efficiency measured by the HEPA-filter quality-assurance test. United States. https://doi.org/10.2172/5139041
Tillery, M I, Salzman, G C, and Ettinger, H J. 1982.
"Effect of particle-size variation on filtration efficiency measured by the HEPA-filter quality-assurance test". United States. https://doi.org/10.2172/5139041. https://www.osti.gov/servlets/purl/5139041.
@article{osti_5139041,
title = {Effect of particle-size variation on filtration efficiency measured by the HEPA-filter quality-assurance test},
author = {Tillery, M I and Salzman, G C and Ettinger, H J},
abstractNote = {A theoretical model has been used to calculate the filtration efficiency that would be indicated by the photometer for challenge aerosols of different size distributions and HEPA filters with different efficiencies as functions of particle size. The model compares the calculated overall efficiency indicated by the photometer with efficiencies calculated with respect to particle number and mass. This calculation assumes three aerosol distributions previously measured at the Filter Test Facilities and four different filtration efficiency versus size curves. The differences in efficiency measured by the QA test procedure and the efficiencies with respect to aerosol mass and number have been calculated for a range of different size particles. The results of these calculations are discussed.},
doi = {10.2172/5139041},
url = {https://www.osti.gov/biblio/5139041},
journal = {},
number = ,
volume = ,
place = {United States},
year = {Fri Jan 01 00:00:00 EST 1982},
month = {Fri Jan 01 00:00:00 EST 1982}
}