METHOD OF SEA WATER DESALINATION BY UTILISING LOW-POTENTIAL HEAT Russian patent published in 2009 - IPC C02F1/04 

FIELD: treatment facilities.

SUBSTANCE: invention relates to water treatment, particularly to salt water desalination, for example sea water or mineralised water by distillation. The invention may be used for local fresh water supply. The method of sea water desalination provides for supplying water into curvilinear channel, where sea water flow excursed to the speed level whereat static pressure in the sea water flow falls below salt water boiling pressure at a given temperature of salt water. Gas-escape channel is provided in the curvilinear channel above the sea water flow surface to discharge saltwater vapour produced as a result of excursed sea water boiling in curvilinear channel. The salt water vapour from gas-escape channel is pumped and condensed. So, initially, seawater is taken from the environment and it flows through the heat-exchanger of circulation water system in condensing power plant, where it is heated. After that seawater is supplied to heat pump and separated into two flows. One heated seawater flow subject to desalination is directed to heat absorber of the heat pump where seawater is additionally heated up. The other seawater flow is directed to heat transfer unit where it is cooled down the ambient temperature and returned to the environment. At the same time, the seawater heated in heat absorber is supplied to curvilinear channel and additional curvilinear channel. Both curvilinear channels are placed in vacuum chamber. The salt water flow heated in heat absorber is excursed in curvilinear channels producing reactive jet at each curvilinear channel outlet to drive curvilinear channels around their common axis of rotation. Vapour from vacuum chamber is pumped to condensate tank via heat-exchanger-cooler.

EFFECT: reduced power inputs per one unit of fresh water volume produced.

4 cl, 1 dwg