Abstract

It is shown that heat transfer that takes place in vapor-liquid flows in the region of high reduced pressures is mainly due to the nucleate boiling mechanism even at high values of vapor quality. At relatively low heat fluxes, a noticeable enhancement of heat transfer is observed as vapor quality increases. A procedure for calculating heat transfer is proposed, which is confirmed by a comparison of calculated results with experimental data on the boiling of carbon dioxide and other liquids in channels.

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