Measurement of heat transfer coefficients for direct contact condensation in core makeup tanks using holographic interferometer

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The present work is to improve our understanding and analysis of direct contact condensation on the gravity injection of CMTs and to measure the heat transfer coefficients around steam bubbles using the holographic interferometer and high speed camera. The condensation regime map associated with the downward injection of steam into water through the steam pipe is investigated to understand the mechanism of the direct contact condensation. The present map shows that the boundary of chugging and subsonic jetting with the larger diameter pipe is shifted to the larger steam mass flux. Steam cavity mode, not found in the literature, and the unique mode of downward injection for the present geometry, is observed at the low subcooled water temperature. With the holographic interferometry and the high speed camera, the heat transfer mechanism for the direct contact condensation in CMTs is understood and the heat transfer coefficients are measured. (C) 2000 Elsevier Science S.A. All rights reserved.
Publisher
ELSEVIER SCIENCE SA
Issue Date
2000-06
Language
English
Article Type
Article
Keywords

WATER; STEAM

Citation

NUCLEAR ENGINEERING AND DESIGN, v.199, no.1-2, pp.75 - 83

ISSN
0029-5493
URI
http://hdl.handle.net/10203/73385
Appears in Collection
NE-Journal Papers(저널논문)
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