Characteristic features of the boiling of emulsions having a low-boiling dispersed phase

The results of investigation of heat transfer from thin wires to a boiling emulsion, the dispersed phase of which is formed from a liquid with a boiling temperature much lower than the boiling temperature of the dispersion medium, are presented. Two variants of boiling of such an emulsion are possible: boiling of the dispersed phase alone and simultaneous boiling of the dispersed phase and dispersion medium. In the present work, only the first variant has been studied; it is distinguished by the following most important features: high superheat of the dispersed-phase droplets ΔTsup of the emulsion and a wide temperature range of bubble boiling (50-200°C). For conventional heat carriers (pure liquids and solutions), the value of ΔTsup does not exceed 1-10°C, with the bubble-boiling interval lying within the range from 5 to 20°C. © Springer Science+Business Media, Inc. 2006.