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Effect of Channel Blockage on Critical Heat Flux for a Horizontal Cylinder in Crossflow

An experimental investigation has been conducted on critical heat flux (CHF) on a horizontal tube in crossflow boiling R-113 at near atmospheric pressures. Data were obtained over a range of fluid velocities (up to 0.52 m/s), heater diameters (8 to 12.7 mm), and flow blockage factors (D/H = 0.31 to...

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Bibliographic Details
Published in:Journal of heat transfer 1995-11, Vol.117 (4), p.998-1002
Main Authors: Dowlati, R, Kawaji, M, Sardjono, I. D, Revankar, S. T
Format: Article
Language:English
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Summary:An experimental investigation has been conducted on critical heat flux (CHF) on a horizontal tube in crossflow boiling R-113 at near atmospheric pressures. Data were obtained over a range of fluid velocities (up to 0.52 m/s), heater diameters (8 to 12.7 mm), and flow blockage factors (D/H = 0.31 to 0.5). The effect of the flow blockage on CHF was examined in detail and compared with other data and existing correlations. No significant effect of flow blockage was observed for D/H up to 0.5. An analytical modification of the Katto-Haramura CHF correlation is proposed to take into account the effect of flow blockage over a wide range of D/H.
ISSN:0022-1481
1528-8943
DOI:10.1115/1.2836322