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ISSN Online: 2377-424X

ISBN Print: 0-85295-345-3

International Heat Transfer Conference 10
August, 14-18, 1994, Brighton, UK

DRY-OUT PHENOMENA AT TWO-PHASE FLOWS IN TUBES WITH POROUS COATINGS.

Get access (open in a dialog) DOI: 10.1615/IHTC10.2460
pages 147-150

要約

The basic results of the experimental investigations of dry-out phenomena and hydraulic resistance at forced dispersed ring two-phase up flows of steam-water mixtures into vertical tubes are present in this paper. The investigations were make in wide region of mass-velocities, pressures, steam qualities and heat loads. The experimental results demonstrate that porous layers deposited on heated surfaces change the boiling crisis nature essentially. The time of crisis development is dramatically increase by more than an order of magnitude. It is possible to enhance the critical steam void-fraction and appreciably the thermal stability at forced two-phase flows in the channels with porous coatings.