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Boiling 2000 Phenomena and Emerging Applications Volume 2

ISBN Print: 1-56700-148-3

A REVIEW OF HEAT AND MASS TRANSFER IN FLOW BOILING OF BINARY MIXTURES

Аннотация

This paper presents a review of the available methods for prediction of forced convective boiling of mixtures. Some of the widely used correlations and design methods are reviewed and compared with more sophisticated approaches that give a detailed description of mass transfer effects as well as of phenomenological aspects of the flow field (Barbosa and Hewitt, 1999). The theoretical predictions are compared with experimental data obtained from the High Pressure Boiling Rig using binary hydrocarbon mixtures (Kandlbinder, 1997). The results point out that, in the annular flow regime, the consideration of combined effects due to droplet interchange and mass transfer resistance at regions adjacent to the liquid/vapour interface lead to a considerable improvement of the predictions of wall temperature and heat transfer coefficient.
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