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International Heat Transfer Conference 8

ISSN: 2377-424X (online)
ISSN: 2377-4371 (flashdrive)

POOL AND CHANNEL NUCLEATE BOILING OP CRYOGENIC FLUIDS - SIMILARITIES

V. A. Grigoriev
Moscow Power Engineering Institute, 105835 Moscow

V. V. Klimenko
Moscow Power Engineering Institute (Technical University), Russia

Alexander V. Klimenko
Moscow Power Engineering Institute (Technical University), Russia

DOI: 10.1615/IHTC8.720
pages 2161-2166

Abstract

The results of an experimental investigation of nucleate boiling under various conditions, including: I - with forced flow in a vertical tube, II - with natural circulation in a vertical tube, III - in a pool on a technical surface, IV - in a pool on the inner surface of a tube (on a fragment of a cut tube) are presented. A weaker dependence of α on q and p with channel boiling compared with pool boiling on a technical surface has been observed. It is shown that generally boiling curve IV does not coincide with the one either for conditions I - II or for conditions III. The analysis of some possible factors influence on the position of the boiling curves is conducted. A correlation for nucleate boiling heat transfer of cryogenic fluids in industrial tubes under conditions of both natural and forced circulation is recommended.

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