Binary Diffusion Coefficients for Gas Mixtures of Propane with Methane and Carbon Dioxide Measured in a Loschmidt Cell Combined with Holographic Interferometry

Journal article
(Original article)


Publication Details

Author(s): Zangi P, Rausch MH, Fröba AP
Journal: International Journal of Thermophysics
Publisher: SPRINGER/PLENUM PUBLISHERS
Publication year: 2019
Volume: 40
Journal issue: 2
ISSN: 0195-928X
Language: English


Abstract

Binary diffusion coefficients D-12 for the molecular gas systems propane-methane (C3H8-CH4) and propane-carbon dioxide (C3H8-CO2) have been measured with a Loschmidt cell combined with holographic interferometry at (293 and 313)K, between (0.05 and 0.5)MPa, and for different mixture compositions. Improved experimental and evaluation procedures already validated for the noble-gas system helium-krypton have been successfully adapted for the molecular gas systems. For the investigated mixtures, adsorption-desorption processes are superimposed on the diffusion process and increase the achievable uncertainties. This hinders reliable conclusions regarding a concentration dependency of the diffusion coefficient. D-12 clearly increases with increasing temperature and decreasing pressure. At the same pressure, temperature, and C3H8 mole fraction, the diffusion coefficient is larger for C3H8-CH4 than for C3H8-CO2. For both systems, the presented diffusion coefficients are in reasonable agreement with available literature data. In particular, the pressure-dependent trend and the absolute values of D-12 at a given temperature match with recent theoretical data based on ab initio calculations in the zero-density limit for both systems.


FAU Authors / FAU Editors

Fröba, Andreas Paul Prof. Dr.-Ing.
Lehrstuhl für Advanced Optical Technologies - Thermophysical Properties
Rausch, Michael Heinrich Dr.-Ing.
Lehrstuhl für Advanced Optical Technologies - Thermophysical Properties
Zangi, Pouria
Erlangen Graduate School in Advanced Optical Technologies


Additional Organisation
Erlangen Graduate School in Advanced Optical Technologies


How to cite

APA:
Zangi, P., Rausch, M.H., & Fröba, A.P. (2019). Binary Diffusion Coefficients for Gas Mixtures of Propane with Methane and Carbon Dioxide Measured in a Loschmidt Cell Combined with Holographic Interferometry. International Journal of Thermophysics, 40(2). https://dx.doi.org/10.1007/s10765-019-2484-6

MLA:
Zangi, Pouria, Michael Heinrich Rausch, and Andreas Paul Fröba. "Binary Diffusion Coefficients for Gas Mixtures of Propane with Methane and Carbon Dioxide Measured in a Loschmidt Cell Combined with Holographic Interferometry." International Journal of Thermophysics 40.2 (2019).

BibTeX: 

Last updated on 2019-13-03 at 07:38