Investigation of the gas-solid Joule-Thomson effect for argon-, nitrogen-, and carbon dioxide-carbon powder aerosol systems

Journal Article · Thu May 24 04:00:00 EDT 1984 · J. Phys. Chem.; (United States)

DOI:https://doi.org/10.1021/j150655a044· OSTI ID:6917568

Rybolt, T R; Pierotti, R A

An apparatus was constructed to disperse a fine powder in a flowing gas and measure the thermal changes associated with a pressure drop across a glass orifice. The gas-solid Joule-Thomson effect was examined for 12 different gas-solids systems at a temperature of 302 K, a downstream pressure of 120 kPa, pressure drops across the orifice from 5 to 45 kPa, flow rates from 2 to 14 mmol/s, and aerosol concentrations from 0 to 16 g of powder/mol of gas. The gaseous component included either argon, nitrogen, or carbon dioxide and the particulate component included either Mexican Graphite (26 m/sup 2//g), Nuchar S-C (903 m/sup 2//g), Nuchar S-A (1661 m/sup 2//g), or Super Sorb (3169 m/sup 2//g) carbon powder. A significant enhancement of the Joule-Thomson cooling effect was found for gas-porous carbon systems relative to a pure gas. The dependence of the magnitude of this effect on the gas-gas and gas-solid interactions was predicted from a virial equation of state based on statistical thermodynamic considerations. Gas-solid virial coefficients and their temperature derivatives were used in conjunction with the theoretical model as modified by heat-transport effects to assess the reliability of theory in predicting the experimentally determined gas-solid Joule-Thomson coefficients.

• Research Organization: Univ. of Tennessee, Chattanooga
• OSTI ID: 6917568
• Journal Information: J. Phys. Chem.; (United States), Journal Name: J. Phys. Chem.; (United States) Vol. 88:11; ISSN JPCHA
• Country of Publication: United States
• Language: English

Related Subjects

02 PETROLEUM
023000 -- Petroleum-- Properties & Composition
37 INORGANIC, ORGANIC, PHYSICAL, AND ANALYTICAL CHEMISTRY
400201* -- Chemical & Physicochemical Properties
AEROSOLS
ARGON
CARBON
CARBON COMPOUNDS
CARBON DIOXIDE
CARBON OXIDES
CHALCOGENIDES
COLLOIDS
DATA
DISPERSIONS
ELEMENTS
EQUIPMENT
EXPERIMENTAL DATA
FLUIDS
GASES
INFORMATION
JOULE-THOMSON EFFECT
MATHEMATICAL MODELS
NITROGEN
NONMETALS
NUMERICAL DATA
OXIDES
OXYGEN COMPOUNDS
PHYSICAL PROPERTIES
POWDERS
RARE GASES
SOLS
THERMODYNAMIC PROPERTIES