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Title: High efficiency virtual impactor

Abstract

Environmental monitoring of atmospheric air is facilitated by a single stage virtual impactor for separating an inlet flow (Q/sub 0/) having particulate contaminants into a coarse particle flow (Q/sub 1/) and a fine particle flow (Q/sub 2/) to enable collection of such particles on different filters for separate analysis. An inlet particle acceleration nozzle and coarse particle collection probe member having a virtual impaction opening are aligned along a single axis and spaced apart to define a flow separation region at which the fine particle flow (Q/sub 2/) is drawn radially outward into a chamber while the coarse particle flow (Q/sub 1/) enters the virtual impaction opening.

Inventors:
Issue Date:
OSTI Identifier:
6692950
Assignee:
Dept. of Energy TIC; EDB-81-034789
DOE Contract Number:  
W-7405-ENG-48
Resource Type:
Patent
Country of Publication:
United States
Language:
English
Subject:
54 ENVIRONMENTAL SCIENCES; 42 ENGINEERING; AIR FILTERS; EFFICIENCY; AERIAL MONITORING; AEROSOLS; AIR POLLUTION; CONTROL EQUIPMENT; PARTICLES; X-RAY FLUORESCENCE ANALYSIS; CHEMICAL ANALYSIS; COLLOIDS; DISPERSIONS; EQUIPMENT; FILTERS; MONITORING; NONDESTRUCTIVE ANALYSIS; POLLUTION; POLLUTION CONTROL EQUIPMENT; SOLS; X-RAY EMISSION ANALYSIS 500200* -- Environment, Atmospheric-- Chemicals Monitoring & Transport-- (-1989); 424000 -- Engineering-- Pollution Control Equipment-- (1980-1989)

Citation Formats

Loo, B.W. High efficiency virtual impactor. United States: N. p., 1980. Web.
Loo, B.W. High efficiency virtual impactor. United States.
Loo, B.W. Thu . "High efficiency virtual impactor". United States.
@article{osti_6692950,
title = {High efficiency virtual impactor},
author = {Loo, B.W.},
abstractNote = {Environmental monitoring of atmospheric air is facilitated by a single stage virtual impactor for separating an inlet flow (Q/sub 0/) having particulate contaminants into a coarse particle flow (Q/sub 1/) and a fine particle flow (Q/sub 2/) to enable collection of such particles on different filters for separate analysis. An inlet particle acceleration nozzle and coarse particle collection probe member having a virtual impaction opening are aligned along a single axis and spaced apart to define a flow separation region at which the fine particle flow (Q/sub 2/) is drawn radially outward into a chamber while the coarse particle flow (Q/sub 1/) enters the virtual impaction opening.},
doi = {},
journal = {},
number = ,
volume = ,
place = {United States},
year = {1980},
month = {3}
}