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ISSN Druckformat: 1064-2285
ISSN Online: 2162-6561
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Heat Transfer in a Gas-Liquid Contact Evaporator
ABSTRAKT
We conducted experinentsl study of heat exchange between a gas jet and evaporating liquid, with different position of a nozzle cross section for gas outflow relative with respect to a liquid level in the physical model of the apparatus containing a submerged burner. It is found that two flow modes jet and bubbling are possible when the outlet cross section of the nozzle lies above the liquid level. The conditions of transition from jet to bubbling flow mode are determined. Empirical relations for calculation of temperature of the vaporgas 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.