Thermophoretic separation of aerosol particles from a sampled gas stream
Abstract
A method for separating gaseous samples from a contained atmosphere that includes aerosol particles uses the step of repelling particles from a gas permeable surface or membrane by heating the surface to a temperature greater than that of the surrounding atmosphere. The resulting thermophoretic forces maintain the gas permeable surface clear of aerosol particles. The disclosed apparatus utilizes a downwardly facing heated plate of gas permeable material to combine thermophoretic repulsion and gravity forces to prevent particles of any size from contacting the separating plate surfaces.
- Inventors:
-
- Halfway, OR
- Issue Date:
- Research Org.:
- WESTINGHOUSE HANFORD CO
- OSTI Identifier:
- 865772
- Patent Number(s):
- 4572007
- 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:
- AC14-76FF02170
- Resource Type:
- Patent
- Country of Publication:
- United States
- Language:
- English
- Subject:
- thermophoretic; separation; aerosol; particles; sampled; gas; stream; method; separating; gaseous; samples; contained; atmosphere; step; repelling; permeable; surface; membrane; heating; temperature; surrounding; resulting; forces; maintain; disclosed; apparatus; utilizes; downwardly; facing; heated; plate; material; combine; repulsion; gravity; prevent; size; contacting; surfaces; apparatus utilizes; permeable material; aerosol particle; gaseous samples; aerosol particles; gas stream; gas permeable; separating gaseous; permeable surface; gaseous sample; surrounding atmosphere; disclosed apparatus; plate surface; prevent particles; separating gas; thermophoretic force; prevent particle; /73/95/96/
Citation Formats
Postma, Arlin K. Thermophoretic separation of aerosol particles from a sampled gas stream. United States: N. p., 1986.
Web.
Postma, Arlin K. Thermophoretic separation of aerosol particles from a sampled gas stream. United States.
Postma, Arlin K. Wed .
"Thermophoretic separation of aerosol particles from a sampled gas stream". United States. https://www.osti.gov/servlets/purl/865772.
@article{osti_865772,
title = {Thermophoretic separation of aerosol particles from a sampled gas stream},
author = {Postma, Arlin K},
abstractNote = {A method for separating gaseous samples from a contained atmosphere that includes aerosol particles uses the step of repelling particles from a gas permeable surface or membrane by heating the surface to a temperature greater than that of the surrounding atmosphere. The resulting thermophoretic forces maintain the gas permeable surface clear of aerosol particles. The disclosed apparatus utilizes a downwardly facing heated plate of gas permeable material to combine thermophoretic repulsion and gravity forces to prevent particles of any size from contacting the separating plate surfaces.},
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}
}
Save to My Library
You must Sign In or Create an Account in order to save documents to your library.