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ISSN Online: 2377-424X

ISBN Print: 0-89116-559-2

International Heat Transfer Conference 8
August, 17-22, 1986, San Francisco, USA

BOILING HEAT TRANSFER IN THE ANNULAR FLOW REGIME

Get access (open in a dialog) DOI: 10.1615/IHTC8.760
pages 2185-2190

Résumé

Heat transfer data are presented for water in annular flow boiling at 160 and 390 kPa in a 9.6 ram bore tube. The difficulties of accurate measurement are described. Nucleate boiling occurs at wall superheats above a threshold dependent on local surface and flow conditions. At low superheats the data is consistent with single-phase convection through a turbulent liquid film, with partial suppression of turbulence at low vapour velocities. A thermal entrance effect has been identified in this regime.