期刊
INTERNATIONAL JOURNAL OF REFRIGERATION-REVUE INTERNATIONALE DU FROID
卷 31, 期 1, 页码 145-151出版社
ELSEVIER SCI LTD
DOI: 10.1016/j.ijrefrig.2007.06.008
关键词
cooling; ice slurry; aqueous solution; sodium chloride; experiment; modelling; flow; heat transfer; melting
This paper presents the results of experiments and modelling carried out on ice slurries flowing in uninsulated steel pipes with a nominal diameter of 50 mm. The slurries used were formed from 4.75% NaCl aqueous solution and had ice mass fractions in the range 18-42%, with a view to the use of thick ice slurry 'pigs' as a pipeline clearing technique. Of particular interest was the distance over which such slurries can survive as plug-like entities, before melting reduces them to ineffective thin two-phase suspensions. The experiments showed that for small volumes of slurry, survivability is directly proportional to the quantity of slurry used, but that increasing the ice fraction has a more marked effect. A simple one-dimensional numerical model that accounts for transportation, heat transfer and melting was developed that produces reasonable predictions. (c) 2007 Elsevier Ltd and IIR. All rights reserved.
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