Enhanced scale-up performance on residence time distribution by integrated microcapillaries with high size uniformity

Liu, Junfeng; Wang, Pengfei; Zhao, Nanyang; Xu, Zhongbin; Huang, Xing

doi:10.1016/j.cej.2023.143843

Chemical Engineering Journal

2023

DOI: 10.1016/j.cej.2023.143843

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Enhanced scale-up performance on residence time distribution by integrated microcapillaries with high size uniformity

Junfeng Liu,

Pengfei Wang,

Nanyang Zhao

et al.

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2024

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Cited by 2 publications

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Measurement techniques in injection molding: A comprehensive review of machine status detection, molten resin flow state characterization, and component quality adjustment

Zhao,

Liu,

et al. 2024

Measurement

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Measurement techniques in injection molding: A comprehensive review of machine status detection, molten resin flow state characterization, and component quality adjustment

Zhao,

Liu,

et al. 2024

Measurement

View full text Add to dashboard Cite

Diode Laser Absorption Spectroscopy and DSMC Calculations for the Determination of Species-Specific Diffusion Coefficients of a CO2-N2O Gas Mixture in the Transition Gas Regime

Munusamy,

Kleine,

O’Byrne

2024

Spectroscopy Journal

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Multicomponent gas mixture diffusion in a microscale confined flow in the transition gas regime at Knudsen numbers (Kn) above 0.1 has potential engineering applications in gas-phase microfluidics. Although the calculation of the diffusion coefficient accounts for the influence of the concentration of other species in a multicomponent gas mixture, the higher rate of gas-wall collision at 0.1 < Kn ≤ 10 introduces additional complications not predicted by conventional calculation methods. Thus, simultaneous measurement of diffusion coefficients for multiple gas species ensures accurate estimation of the diffusion coefficient of a particular species that includes the effect of interactions with other species and wall surface conditions in a multicomponent gas mixture at Kn > 0.1. However, most experimental methods for measuring the diffusion coefficient are not species-specific and therefore cannot directly differentiate between the species diffusing in a gas mixture. Thus, this paper demonstrates a new experiment methodology consisting of a two-bulb diffusion configuration accompanied by a tunable diode laser absorption spectroscopy detection technique for species-specific, in-situ, simultaneous measurement of the effective diffusion coefficient for a CO2-N2O gas mixture in the transition gas regime. The experimental results are compared against direct simulation Monte Carlo calculations and the Bosanquet approximation showing a deviation that has not been reported in the literature before.

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Enhanced scale-up performance on residence time distribution by integrated microcapillaries with high size uniformity

Cited by 2 publications

References 44 publications

Measurement techniques in injection molding: A comprehensive review of machine status detection, molten resin flow state characterization, and component quality adjustment

Measurement techniques in injection molding: A comprehensive review of machine status detection, molten resin flow state characterization, and component quality adjustment

Diode Laser Absorption Spectroscopy and DSMC Calculations for the Determination of Species-Specific Diffusion Coefficients of a CO2-N2O Gas Mixture in the Transition Gas Regime

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