Determining properties of a flow-through supercavitation desalination plant

Determining properties of a flow-through supercavitation desalination plant

Автор: Radzyuk Alexsandr Yu., Istyagina Elena B., Kulagina Ludmila V., Li Feng-Chen, Pjanykh Tatiana A., Grishaev Dmitry A., Cai Wei-Hua

Журнал: Журнал Сибирского федерального университета. Серия: Техника и технологии @technologies-sfu

Рубрика: Исследования. Проектирование. Опыт эксплуатации

Статья в выпуске: 1 т.16, 2023 года.

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Nowadays humanity faces an increasing problem of fresh water, the resource of which is rapidly declining because of anthropogenic activity. In this regard, the development of methods and means of purification of natural waters from various impurities, both solid and gaseous, becomes a priority. Steam extraction from the supercavitation cavity for its subsequent condensation is an obvious method of water desalination and has a number of undeniable advantages. However, numerous attempts to implement a method of cavitation desalination of water using large-scale setups have not been successful yet. The purpose of this study is to obtain experimental dependence between the temperature and flow velocity of the desalinated liquid, the pressure in the cavity and its size, the geometry of the streamlined body and the volume of steam taken from the cavity in the prototype of a supercavitation desalination plant. Analyzing obtained data made it possible to show a sharp difference between gas and steam cavitation, the performance of the experimental setup in the desalination mode has been determined. It was concluded that the steam velocity in the condensate extraction pipeline is a factor limiting the condensate output. Based on the data obtained, specific design criteria for industrial supercavitation desalination plants were determined.

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Supercavitation desalination plant, cavity hydrodynamics, cavitation experimental setup, degree of steam dryness

Короткий адрес: https://sciup.org/146282568

IDR: 146282568

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