Keywords
heat flux, nonelectrolyte liquid, heats of transport
Abstract
Expressions for that portion of the heat flux which is due to composition gradients in multicomponent nonelectrolyte liquid mixtures have been formulated in terms of heats of transport. The resultant thermal energy equation in combination with component mass balance equations constitute coupled partial differential equations descriptive of the diffusion thermoeffect in liquid mixtures. These equations were solved with a double perturbation technique subject to initial and boundary conditions consistent with experimental design conditions considered appropriate for successful measurement of multicomponent heats of transport. Based on the adiabatic type cell, the expected temperature response, dependent on cell variables, experimental conditions, and system thermophysical properties, has been modeled to provide design information for successful and optimum heats of transport measurements. In ternary systems, the two independent heats of transport can be experimentally determined from temperature response measurements only if two experiments are performed at the same mean composition but with different initial composition gradients. Experimental heats of transport in ternary systems are obtainable based upon the design principles of this work
Original Publication Citation
G. Platt, T. Vongvanich, and R.L. Rowley, "The Diffusion Thermoeffect in Ternary, Nonelectrolyte Liquid Mixtures", J. Chem. Phys. 77, 2113 (1982)
BYU ScholarsArchive Citation
Rowley, Richard L.; Platt, Gerald; and Vongvanich, Tevin, "The Diffusion Thermoeffect in Ternary, Nonelectrolyte Liquid Mixtures" (1982). Faculty Publications. 760.
https://scholarsarchive.byu.edu/facpub/760
Document Type
Peer-Reviewed Article
Publication Date
1982-08-15
Permanent URL
http://hdl.lib.byu.edu/1877/1469
Publisher
AIP
Language
English
College
Ira A. Fulton College of Engineering and Technology
Department
Chemical Engineering
Copyright Status
© 1982 American Institute of Physics. This article may be downloaded for personal use only. Any other use requires prior permission of the author and the American Institute of Physics. The following article appeared in The Journal of Chemical Physics and may be found at http://link.aip.org/link/?JCPSA6/77/2113/1
Copyright Use Information
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