Thermophoretic separation of aerosol particles from a sampled gas stream
A method is described for separating aerosol particles from a gas sample being withdrawn from a contained atmosphere, comprising the following steps: placing within the contained atmosphere a covering gas impermeable enclosure have an interior chamber partly defined by a bottom metal plate that is permeable to gas; fixing the position of the enclosure with the plate facing downwardly and directly exposed to the contained atmosphere; heating the metal plate to a temperature greater than that of the contained atmosphere, whereby aerosol particles are repelled to the resulting thermophoretic forces applied to them by the temperature gradient produced in the atmosphere immediately under the plate; and sampling gas within the interior chamber of the enclosure.
- Assignee:
- Dept. of Energy
- Patent Number(s):
- US 4572007
- OSTI ID:
- 5897283
- Resource Relation:
- Patent File Date: Filed date 7 Sep 1984
- Country of Publication:
- United States
- Language:
- English
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Thermophoretic separation of aerosol particles from a sampled gas stream
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Related Subjects
PARTICULATES
SEPARATION PROCESSES
THERMOPHORESIS
CONTROLLED ATMOSPHERES
COVER GAS
GAS FLOW
HEATING
METALS
PERMEABILITY
SAMPLING
TEMPERATURE GRADIENTS
ATMOSPHERES
ELEMENTS
FLUID FLOW
FLUIDS
GASES
INERT ATMOSPHERE
PARTICLES
500200* - Environment
Atmospheric- Chemicals Monitoring & Transport- (-1989)