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

• B. P. Mathur

  Yale University, New Haven, Connecticut 06520

• W. W. Watson

  Yale University, New Haven, Connecticut 06520

抄録

A Swing separator has been used to measure the composition and temperature dependence of the thermal-diffusion factor αT in the H2–He system. This work was initiated following reports of abnormal behavior of this gas mixture in thermal conductivity measurements. We have measured αT values as a function of composition at three average temperatures: 129.3°, 239.8°, and 320.5°K. At each of these temperatures both a minimum and a maximum occur in the αT-composition curve. The position of the minimum shifts towards the higher percentages of H2 in the mixture as the temperature decreases, and the minimum tends to smooth out at higher temperatures. We have also measured αT as a function of temperature in the range 130°–600°K for H2 percentages 4.84, 14.5, 49.59, and 62.89 in the H2–He mixtures. As the temperature increases αT passes through a broad maximum and then slowly decreases. An approximate semitheoretical explanation is presented.

収録刊行物

• The Journal of Chemical Physics

  The Journal of Chemical Physics 49 (12), 5537-5541, 1968-12-15

  AIP Publishing

キーワード

• Physical and Theoretical Chemistry
• General Physics and Astronomy

詳細情報

• CRID: 1360574095601283072
• NII論文ID: 30015694958
• DOI: 10.1063/1.1670084
• ISSN: 10897690
• ISSN: 00219606
• Web Site: https://pubs.aip.org/aip/jcp/article-pdf/49/12/5537/18860030/5537_1_online.pdf
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