Method of measuring the concentration of gas in the presence of liquid particles

Patent · Tue Sep 11 04:00:00 EDT 1984

OSTI ID:6309595

Chraplyvy, A R; Hammond, Jr, D C

To evaluate the droplet evaporation and liquid/vapor phase interactions in aerosols and sprays, an optical method for measuring the concentration of the gas phase is provided. Two laser beams are passed through a mixture of the gas and liquid particles, one beam having a wavelength not absorbed by the gas and the second having a wavelength which is absorbed by the gas. Attenuation of each beam is measured, the droplet size distribution is measured by a light scattering technique and the concentration of gas in the path of the light beams is determined from the attenuation of each beam, the droplet size distributions, and known parameters.

• Assignee: General Motors Corporation
• Patent Number(s): US 4470697
• OSTI ID: 6309595
• Country of Publication: United States
• Language: English

Related Subjects

440300* -- Miscellaneous Instruments-- (-1989)
47 OTHER INSTRUMENTATION
500200 -- Environment
Atmospheric-- Chemicals Monitoring & Transport-- (-1989)
54 ENVIRONMENTAL SCIENCES
ABSORPTION
AEROSOLS
CHEMICAL COMPOSITION
COLLOIDS
DISPERSIONS
DROPLETS
ELECTROMAGNETIC RADIATION
EVAPORATION
FLUIDS
GASES
LASER RADIATION
LASERS
LIGHT SCATTERING
LIQUIDS
MEASURING METHODS
MIXTURES
PARTICLES
PHASE TRANSFORMATIONS
RADIATIONS
SCATTERING
SOLS
VAPORS
VISIBLE RADIATION
WAVELENGTHS