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Heat Transfer Research
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ISSN Druckformat: 1064-2285
ISSN Online: 2162-6561

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Heat Transfer Research

DOI: 10.1615/HeatTransRes.v32.i4-6.150
4 pages

Heat Transfer in a Gas-Liquid Contact Evaporator

A. L. Efimov
Moscow Power Institute (Technical University), Russia
E. I. Krupnov
Engineering-Construction Academy, Ivanovo, Russia

ABSTRAKT

Heat transfer between a gas jet and evaporating liquid, with a nozzle cross-section for gas outflow being positioned differently with respect to a liquid level in the physical model of the apparatus containing a submerged burner, is studied experimentally. It is found that in the case when the nozzle outlet cross-section lies above the liquid level two flow modes - jet and bubbling - are possible. Empirical relations for calculation of the temperature of a vapor-gas mixture at the apparatus outlet are obtained for each mode. The results of the study are used in the development of energy-saving technological schemes of processing wastes of potato starch production and evaporative decontamination of mineralized sewage.


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