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Experimental Study of Air-Steam–Mixture Condensation Underneath Containment Vessel Surface.

Authors :
Tan, Bing
Tian, W. X.
Chen, R. H.
Qiu, S. Z.
Su, G. H.
Source :
Nuclear Science & Engineering. Aug2021, Vol. 195 Issue 8, p838-852. 15p.
Publication Year :
2021

Abstract

Aiming at studying the condensate flow phenomenon and air-steam–mixture condensation heat transfer underneath a containment vessel surface, a test bench was constructed. The plate dimension was 1.5 × 0.6 m, with Carbozinc 11 coating on the surface, suspended in a pressure vessel with 2.5-m diameter and 4.5-m height. The air-steam mixture was condensed on an inclined plate through natural convection mode and jet mode. By observing flow behavior on the plate through a viewport, four basic regimes were obtained as the inclination angle gradually increased: droplet, droplet to rivulet transition, developed rivulet, and uniform film. During the experiment, we observed a steam atomization phenomenon; therefore, the model predicted better with the atomization effect considered. A simple formula from the condensation data is proposed when the air mole fraction is small. The error between the experimental results and the predicted data is within 25%. [ABSTRACT FROM AUTHOR]

Subjects

Subjects :
*HEAT transfer
*ATOMIZATION

Details

Language :
English
ISSN :
00295639
Volume :
195
Issue :
8
Database :
Academic Search Index
Journal :
Nuclear Science & Engineering
Publication Type :
Academic Journal
Accession number :
151552509
Full Text :
https://doi.org/10.1080/00295639.2021.1878780