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Quench Pool Boiling with Temporary Crystalline Enhancers
Author(s) -
Ladizhensky Izhak,
Korin Eli,
Mazor Gedalia,
Nemirovsky Dmitry,
Goldkin Evgeny
Publication year - 2014
Publication title -
chemical engineering and technology
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.403
H-Index - 81
eISSN - 1521-4125
pISSN - 0930-7516
DOI - 10.1002/ceat.201300494
Subject(s) - liquid nitrogen , quenching (fluorescence) , boiling , coating , nitrogen , saturation (graph theory) , materials science , chemistry , analytical chemistry (journal) , thermodynamics , composite material , chromatography , organic chemistry , physics , mathematics , quantum mechanics , combinatorics , fluorescence
In some industrial activities, the use of permanent heat transfer enhancements such as metal coating, pins, and grooves in cryogenic treatment is quite problematic. Such permanent heat transfer enhancers were replaced with temporary enhancers made of different crystalline materials, here focusing on NaCl, MgSO 4 ·7H 2 O, CaCl 2 ·2H 2 O, and C 6 H 5 Na 3 O 7 ·2H 2 O, which were used during quenching of the sample in the cryogenic liquid, i.e., nitrogen. The time required for sample cooling until the liquid nitrogen saturation temperature is reached decreases significantly when a crystalline coating is applied. The dependence of the cooling time on temporary coating creation parameters such as solution concentration, initial temperature of the sample, and solution spreading time is discussed.