Measurements of Multicomponent Diffusion Coefficients for the CO2–He–N2 System Using the Point Source Technique

Measurements of Multicomponent Diffusion Coefficients for the CO2–He–N2 System Using the Point Source Technique
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使用点源技术测量 CO2-He-N2 系统的多组分扩散系数

DOI:
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发表时间:
1960
期刊:
影响因子:
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通讯作者:
A. A. Westenberg
A. A. Westenberg
中科院分区:
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文献类型:
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作者:
R. E. Walker;N. Dehaas;A. A. Westenberg

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在室温和大气压下,使用点源技术测量了不同成分的氦气和氮气混合物中痕量二氧化碳的扩散系数。结果与 Fairbanks 和 Wilke 的结果一致,因为 Di−mix=[Σk lim i≠k(xk/Dik)]−1 形式的方程可用于将摩尔分数 xk 给出的组成混合物中痕量物质 i 的扩散系数与二元扩散系数 Dik 联系起来。提供了有关扩散区中混合物分离的一些数据。
Measurements of the diffusion coefficient for a trace of carbon dioxide in a mixture of helium and nitrogen of varying composition have been made at room temperature and atmospheric pressure using the point source technique. The results are shown to be in agreement with the results of Fairbanks and Wilke in that an equation of the form Di−mix=[∑k lim i≠k(xk/Dik)]−1 can be used to relate the diffusion coefficient of a trace of species i in a mixture of composition given by the mole fraction xk to the binary diffusion coefficients Dik. Some data are presented on the separation of the mixture in the diffusion zone.