Composition and Temperature Dependence of the Thermal Diffusion Factor in H2–He Gas Mixtures

1968 ◽  
Vol 49 (12) ◽  
pp. 5537-5541 ◽  
Author(s):  
B. P. Mathur ◽  
W. W. Watson
Keyword(s):  
Temperature Dependence ◽  
Thermal Diffusion ◽  
Gas Mixtures ◽  
Diffusion Factor ◽  
Thermal Diffusion Factor

Composition Dependence of the Thermal Diffusion Factor in Binary Gas Mixtures

1967 ◽  
Vol 22 (2) ◽  
pp. 164-169
Author(s):  
B. P. Mathur ◽  
S. C. Saxena
Keyword(s):  
Thermal Conductivity ◽  
Thermal Diffusion ◽  
Composition Dependence ◽  
Gas Mixtures ◽  
Intermolecular Potentials ◽  
Diffusion Factor ◽  
Rigorous Theory ◽  
Thermal Diffusion Factor ◽  
Factor Α

The thermal diffusion factor, αT, for the gas systems He—Ar, He—Ne, Ne—Kr and Ne —Xe is measured as a function of composition in a glass two bulb apparatus, operating with its hot and cold bulbs at 373.9° and 273.3°K respectively. Gas samples are analysed with a sensitive and specially designed differential thermal conductivity analyser. The αT data are compared with similar values of other vorkers and a smooth set is recommended. The data are further compared with the predictions of rigorous theory in conjunction with realistic intermolecular potentials. An approximate prediction of the theory concerning the composition dependence of αT has been checked.

scholarly journals A NEW METHOD FOR MEASURING THERMAL DIFFUSION FACTOR OF GAS MIXTURES

1975 ◽  
Vol 7 (6) ◽  
pp. 467-469 ◽  
Author(s):  
TAKAO KOKUGAN ◽  
NOBUYUKI ISHIZAKA ◽  
MASARU SHIMIZU
Keyword(s):  
Thermal Diffusion ◽  
Gas Mixtures ◽  
New Method ◽  
Diffusion Factor ◽  
Thermal Diffusion Factor

The thermal diffusion factor and temperature

1954 ◽  
Vol 224 (1159) ◽  
pp. 513-526 ◽  
Keyword(s):  
Carbon Dioxide ◽  
Thermal Diffusion ◽  
Gas Mixtures ◽  
Diffusion Factor ◽  
Thermal Diffusion Factor ◽  
Lennard Jones ◽  
Hydrogen Deuterium ◽  
Experimental Values

The thermal diffusion factor has been measured for several gas mixtures in a range of temperature which included that at which the reversal of sign, predicted theoretically when a Lennard-Jones type of interaction is assumed, might be observed. A reversal was found with hydrogen-deuterium, nitrogen-argon, oxygen-argon and nitrogen-carbon dioxide mixtures; with neon-argon, argon-krypton and krypton-xenon mixtures no reversal was observed, the thermal diffusion factor having a small positive value at the lowest tempera­tures at which measurements could be made. A comparison of the experimental values of the thermal diffusion factor with values calculated for the Lennard-Jones (13, 7) model shows that this model is not quantitatively satisfactory.

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