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Title: 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:
 [1]
  1. Santa Fe, NM
Publication Date:
Research Org.:
Los Alamos National Lab. (LANL), Los Alamos, NM (United States)
OSTI Identifier:
866032
Patent Number(s):
US 4619136
Assignee:
United States of America as represented by United States (Washington, DC)
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. 1986. "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 = {},
url = {https://www.osti.gov/biblio/866032}, journal = {},
number = ,
volume = ,
place = {United States},
year = {1986},
month = {1}
}