Apparatus for measuring the decontamination factor of a multiple filter air-cleaning system
Abstract
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.
- Inventors:
-
- Santa Fe, NM
- Issue Date:
- Research Org.:
- Los Alamos National Laboratory (LANL), Los Alamos, NM (United States)
- OSTI Identifier:
- 866032
- Patent Number(s):
- 4619136
- Assignee:
- United States of America as represented by United States (Washington, DC)
- Patent Classifications (CPCs):
-
G - PHYSICS G01 - MEASURING G01N - INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- DOE Contract Number:
- W-7405-ENG-36
- Resource Type:
- Patent
- Country of Publication:
- United States
- Language:
- English
- Subject:
- apparatus; 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; /73/
Citation Formats
Ortiz, John P. Apparatus for measuring the decontamination factor of a multiple filter air-cleaning system. United States: N. p., 1986.
Web.
Ortiz, John P. Apparatus for measuring the decontamination factor of a multiple filter air-cleaning system. United States.
Ortiz, John P. Wed .
"Apparatus for measuring the decontamination factor of a multiple filter air-cleaning system". United States. https://www.osti.gov/servlets/purl/866032.
@article{osti_866032,
title = {Apparatus for measuring the decontamination factor of a multiple filter air-cleaning system},
author = {Ortiz, John P},
abstractNote = {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.},
doi = {},
journal = {},
number = ,
volume = ,
place = {United States},
year = {Wed Jan 01 00:00:00 EST 1986},
month = {Wed Jan 01 00:00:00 EST 1986}
}