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International Heat Transfer Conference 9

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

FLOW BOILING IN VERTICAL DOWN-FLOW

T. Dougherty
Columbia University, New York, NY

C. Fighetti
Columbia University, New York, NY

G. Reddt
Columbia University, New York, NY

B.W. Yang
Columbia University, New York, NY

T. Jafri
Columbia University, New York, NY

Edward V. McAssey, Jr.
Villanova University, Villanova, PA, USA

Z. Qureshi
Westinghouse Savannah River Co., Aiken, SC, USA

Abstract

An experimental program has been conducted to investigate flow boiling in vertical down-flow. For an L/D ratio range from 100 to 150, the pressure drop under uniformly heated sub-cooled boiling conditions has been obtained for a wide range of operating parameters. The results are presented which show the onset of flow instability and the onset of nucleate boiling.

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