ROTATIONAL COLLISION NUMBER AND EUCKEN FACTORS FROM THERMAL TRANSPIRATION MEASUREMENTS

被引：54

作者：

HEALY, RN

STORVICK, TS

机构：

[1] Department of Chemical Engineering, University of Missouri - Columbia, Columbia

[2] Reservoir Behavior Division Esso Production Research Company, Houston, TX

来源：

JOURNAL OF CHEMICAL PHYSICS | 1969年 / 50卷 / 03期

关键词：

D O I：

10.1063/1.1671206

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

摘要：

The formal kinetic theory of Wang Chang and Uhlenbeck as modified by Mason and Monchick provides an explicit expression for the heat conductivity of a polyatomic gas. The rotational collision number is an important parameter in this expression. The maximum differential pressure supported by a thermal transpiration measurement is related to the rotational collision number by the dusty gas model proposed by Mason. Thermal transpiration measurements were made that confirm the dusty gas model relationship and provide rotational collision numbers for nitrogen, oxygen, and carbon dioxide at 366°, 398°, and 444°K. Single values of Zrot were obtained for hydrogen, methane, and tetrafluoromethane. These values of Zrot agree with those obtained by ultrasonic measurements and the kinetic theory equations provide Eucken factors that agree within the experimental error with the factors obtained from direct heat conductivity measurements.

引用

页码：1419 / &

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