THEORETICAL INVESTIGATION OF VAPOR BLANKET VELOCITY BASED ON MASS, ENERGY, AND MOMENTUM BALANCE TO PREDICT CHF AT LOW QUALITY FLOW

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In this paper a theoretical prediction method of the critical heat flux in flow boiling at low quality is presented based on the liquid sublayer dryout mechanism. The vapor blanket velocity which is the key parameter to predict the DNB type CHF is evaluated by solving mass, energy, and momentum balances simultaneously. The accuracy of the present model is evaluated by comparing model predictions with the experimental data for water. The predictions agree well with the extensive CHF data of water in uniformly heated vertical round tubes.
Publisher
PERGAMON-ELSEVIER SCIENCE LTD
Issue Date
1992
Language
English
Article Type
Article
Keywords

CRITICAL HEAT-FLUX; ROUND TUBES; MODEL

Citation

INTERNATIONAL COMMUNICATIONS IN HEAT AND MASS TRANSFER, v.19, no.5, pp.619 - 628

ISSN
0735-1933
URI
http://hdl.handle.net/10203/58011
Appears in Collection
NE-Journal Papers(저널논문)
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