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RESEARCH PAPERS

Selective Freezing of a Dilute Salt Solution on a Cold Ice Surface

[+] Author and Article Information
L. J. Fang, F. B. Cheung, J. H. Linehan, D. R. Pedersen

Reactor Analysis and Safety Division, Argonne National Laboratory, Argonne, Ill. 60439

J. Heat Transfer 106(2), 385-393 (May 01, 1984) (9 pages) doi:10.1115/1.3246684 History: Received June 01, 1983; Online October 20, 2009

Abstract

The growth of a solid–liquid, two-phase region during selective freezing of a dilute, eutectic-forming, salt solution over a subcooled ice slab is investigated experimentally and theoretically. The morphology of the two-phase region and the kinetics of the solid–liquid interface observed for a NaCl-H2 O system are described photographically. The motion of the two-phase, liquidus front, recorded by a telescopic device that amplifies the local phenomena of the two-phase region, is presented along with the measured transient temperature distribution of the system. Based on the assumption that the solution element of the two-phase region is in local thermodynamic equilibrium with the solid phase, a similarity model is developed to predict the dependence of the freezing rate on various controlling parameters of the system. Transient heat conduction in the ice slab is also included in the model to study the effect of the wall. Comparison is made between the analytical and the experimental results and found to be good.

Copyright © 1984 by ASME
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