Calculation of thermodynamic properties and transport coefficients for SF/sub 6/-N/sub 2/ mixtures in the temperature range 1,000-30,000 K

Journal Article · Sat Mar 01 00:00:00 EST 1986 · Plasma Chem. Plasma Process.; (United States)

DOI:https://doi.org/10.1007/BF00573822· OSTI ID:5279110

Gleizes, A; Razafinimanana, M; Vacquie, S

The authors have computed the equilibrium composition, the transport coefficients (viscosity and electrical and thermal conductivities), the thermodynamic properties (Gibbs and Helmholtz potentials, entropy, enthalpy, and specific heats), and the derived quantities (mass density and sound velocity) for sulfur hexafluoride-molecular nitrogen mixtures in conditions relevant to circuit-breaker arcs: temperature between 1000 and 30,000 K and pressure in the range 1-10 atm. The validity of the computation has been checked by a detailed comparison of the results with those available in the literature concerning pure sulfur hexafluoride and pure molecular nitrogen. In such mixtures the chemical reactions (dissociation and ionization) have a strong influence on thermal conduction and specific heat. the effect of sulfur hexafluoride on the properties of such mixtures is elucidated; in a mixture containing 40% sulfur hexafluoride, the amplitude of the thermal conduction peak appearing around 7500 K is reduced by a factor of four relative to that of pure molecular nitrogen. The influence of pressure on the properties of the plasma between 1 and 10 atm is relatively low.

• Research Organization: Univ. Paul Sabatier, Toulouse
• OSTI ID: 5279110
• Journal Information: Plasma Chem. Plasma Process.; (United States), Vol. 6:1
• Country of Publication: United States
• Language: English

Related Subjects

37 INORGANIC
ORGANIC
PHYSICAL AND ANALYTICAL CHEMISTRY
NITROGEN
DISSOCIATION
ELECTRIC CONDUCTIVITY
IONIZATION
PLASMA SIMULATION
THERMODYNAMIC PROPERTIES
SULFUR FLUORIDES
ATOMIC IONS
COMPUTERIZED SIMULATION
DATA COVARIANCES
ELECTRIC ARCS
ELECTRON-MOLECULE COLLISIONS
FLUORINE IONS
IONIC COMPOSITION
LTE
MIXTURES
NITROGEN IONS
VISCOSITY
CHARGED PARTICLES
COLLISIONS
CURRENTS
DISPERSIONS
ELECTRIC CURRENTS
ELECTRIC DISCHARGES
ELECTRICAL PROPERTIES
ELECTRON COLLISIONS
ELEMENTS
EQUILIBRIUM
FLUORIDES
FLUORINE COMPOUNDS
HALIDES
HALOGEN COMPOUNDS
IONS
MOLECULE COLLISIONS
NONMETALS
PHYSICAL PROPERTIES
SIMULATION
SULFUR COMPOUNDS
400301* - Organic Chemistry- Chemical & Physicochemical Properties- (-1987)