Diffusion coefficients and thermal diffusion factors for five binary systems of nitrogen and a noble gas

1982 ◽  
Vol 115 (3) ◽  
pp. 339-352 ◽  
Author(s):  
R.D. Trengove ◽  
Peter J. Dunlop
Keyword(s):  
Thermal Diffusion ◽  
Diffusion Coefficients ◽  
Binary Systems ◽  
Noble Gas

Development of a CFD-based simulation model and optimization of thermal diffusion column: application on noble gas separation

2021 ◽  
Vol 0 (0) ◽  
Author(s):  
Hamed Eghbalahmadi ◽  
Parissa Khadiv-Parsi ◽  
Seyed Mohammad Ali Mousavian ◽  
Mohammad Hosein Eghbal Ahmadi
Keyword(s):  
Experimental Data ◽  
Thermal Diffusion ◽  
Noble Gas ◽  
Target Function ◽  
Operating Conditions ◽  
Optimum Operating ◽  
Hot Wire ◽  
Wire Temperature ◽  
Diffusion Column ◽  
Performance Effects

Abstract In this study, numerical simulations were carried out to investigate the separation of the helium-argon gas mixture by thermal diffusion column. This research determined the significant parameters and their effects on the process performance. Effects of feed flow rate, cut ratio, and hot wire temperature in a 950 mm height column with an inner tube of 9.5 mm radius were examined through the simulation of the thermal diffusion column. For minimizing the number of simulations and obtaining the optimum operating conditions, response surface methodology (RSM) was used. Analysis of separative work unit (SWU) values as a target function for helium-argon separation clearly showed that the maximum amount of SWU in thermal diffusion column was achieved, when hot wire temperature increased as large as technically possible, and the feed rate and cut ratio were equal to 55 Standard Cubic Centimeters per Minute (SCCM) and 0.44, respectively. Finally, the SWU value in optimum conditions was compared with the experimental data. Results illustrated that the experimental data were in good agreement with simulation data with an accuracy of about 90%.

Thermal diffusion factors at 300 K for seven binary noble gas systems containing helium or neon

1981 ◽  
Vol 108 (2-3) ◽  
pp. 488-501 ◽  
Author(s):  
R.D. Trengove ◽  
H.L. Robjohns ◽  
T.N. Bell ◽  
M.L. Martin ◽  
Peter J. Dunlop
Keyword(s):  
Thermal Diffusion ◽  
Noble Gas

Diffusion coefficients of krypton–noble gas systems

1979 ◽  
Vol 71 (9) ◽  
pp. 3601-3607 ◽  
Author(s):  
David Cain ◽  
W. L. Taylor
Keyword(s):  
Diffusion Coefficients ◽  
Noble Gas
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