FIELD: engines and pumps.
SUBSTANCE: invention relates to sprayers, for example, injectors and to method of injection for heating of pumped and ejection media. Repeated boiling jet apparatus comprises two interconnected nozzles configured to boil fluid flow at first nozzle, to decelerate and to reduce gas phase in second nozzle with subsequent acceleration and repeated boiling in second nozzle. Repeated deceleration and gas phase reduction occur at second nozzle outlet. Every deceleration heats the fluid by gas phase reduction, thus, power heat by fluid pressure is efficiently converted into heat by nozzles. Steam injection converging-diverging nozzle and mixing chamber can be used for first boiling instead of the first nozzle. The other nozzle can be used for introduction of cold water at second nozzle outlet for mixing with hot flow till termination of second deceleration.
EFFECT: higher efficiency of operation.
19 cl, 3 dwg
