High efficiency virtual impactor
Patent
·
OSTI ID:6692950
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.
- DOE Contract Number:
- W-7405-ENG-48
- Assignee:
- Dept. of Energy
- OSTI ID:
- 6692950
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
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)
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)