Apparatus for measuring the decontamination factor of a multiple filter air-cleaning system
- Santa Fe, NM
An apparatus for measuring the overall decontamination factor of first and second filters located in a plenum. The first filter separates the plenum's upstream and intermediate chambers. The second filter separates the plenum's intermediate and downstream chambers. The apparatus comprises an aerosol generator that generates a challenge aerosol. An upstream collector collects unfiltered aerosol which is piped to first and second dilution stages and then to a laser aerosol spectrometer. An intermediate collector collects challenge aerosol that penetrates the first filter. The filtered aerosol is piped to the first dilution stage, diluted, and then piped to the laser aerosol spectrometer which detects single particles. A downstream collector collects challenge aerosol that penetrates both filters. The twice-filtered aerosol is piped to the aerosol spectrometer. A pump and several valves control the movement of aerosol within the apparatus.
- Research Organization:
- Los Alamos National Laboratory (LANL), Los Alamos, NM (United States)
- DOE Contract Number:
- W-7405-ENG-36
- Assignee:
- United States of America as represented by United States (Washington, DC)
- Patent Number(s):
- US 4619136
- OSTI ID:
- 866032
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
measuring
decontamination
factor
multiple
filter
air-cleaning
overall
filters
located
plenum
separates
upstream
intermediate
chambers
downstream
comprises
aerosol
generator
generates
challenge
collector
collects
unfiltered
piped
dilution
stages
laser
spectrometer
penetrates
filtered
stage
diluted
detects
single
particles
twice-filtered
pump
valves
control
movement
single particle
decontamination factor
apparatus comprises
aerosol generator
apparatus comprise
multiple filter
overall decontamination
valves control
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