Enhancement of Spray Flash Evaporation by Means of the Injection of Bubble Nuclei

[+] Author and Article Information
O. Miyatake, T. Tomimura, Y. Ide

Research Institute of Industrial Science, Kyushu University, Sakamoto, Kasuga, Kasuga-shi, Japan 816

J. Sol. Energy Eng 107(2), 176-182 (May 01, 1985) (7 pages) doi:10.1115/1.3267673 History: Received October 01, 1983; Online November 11, 2009


Spray flash evaporators are being used or considered for power systems utilizing solar energy, ocean thermal energy, and geothermal energy. As part of an attempt to develop a compact, efficient flash evaporator, an experimental study of the effect of injection of bubble nuclei has been conducted. The bubble nuclei were generated by electrolyzing warm water, which was ejected from a simple tubular nozzle into a low-pressure vapor zone. Effects of electrolytic current level, nozzle diameter, liquid flow rate, liquid temperature, and superheat were investigated. The evaporator rates attained were superior to those in conventional multistage flash evaporators with open channels.

Copyright © 1985 by ASME
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