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TECHNICAL PAPERS: Boiling and Condensation

Critical Heat Flux During Natural Circulation Boiling of Saturated Liquid in Annulus With Uniformly Heated Outer Tube

[+] Author and Article Information
M. Monde, Y. Mitsutake

Department of Mechanical Engineering, Saga University, 1 Honjo-machi, Saga-shi, Saga 840-8502, Japan

J. Heat Transfer 122(1), 74-79 (Sep 26, 1999) (6 pages) doi:10.1115/1.521449 History: Received May 13, 1999; Revised September 26, 1999
Copyright © 2000 by ASME
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References

Figures

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Experimental apparatus: (1) pressure vessel, (2) cooling coil, (3) inner tube, (4) heated outer tube, (5) auxiliary heater, (6) upper heater, (7) thermocouple, (8) lower electrode, (9) DC power supply, (10) multiplexer, (11) digital volt meter, (12) computer, (13) test assembly, (14) bakelite
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Boiling curve (z: distance from entrance of heated tube)
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(a) Relationship between heated length and critical heat flux for water; (b) relationship between heated length and critical heat flux for R113
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Correlation of critical heat flux data with Eqs. (1), (3), and (7)
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Classification of critical heat flux characteristics in vertical natural circulation flow
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(a) 1/Ku versus L/Dhe for water; (b) 1/Ku versus L/Dhe for R113
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(a) Effect of clearance on constant in Eqs. (1) and (3) for water; (b) effect of clearance on constant in Eqs. (1) and (3) for R113
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(a) Effect of inserted (inner) tube on critical heat flux for water; (b) effect of inserted (inner) tube on critical heat flux for R113

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