The hydrodynamic method of heating the liquid

 

(57) Abstract:

The method is designed for heating and hot water supply to household customers in process plants for the intensification of the processes of mixing, dispersing, heating and so on, the Method is achieved by increasing the abnormal heat generation due to the impact of hydrodynamic braking on a collision jets cavitating fluid flowing at high speed from the counter-directional coaxial nozzles. Additionally the conditions for the formation and growth of cavitation bubbles by providing a self-oscillating mode of the pressure fluid from surplus to shallow vacuum. Periodic change of fluid pressure in the volume of its inhibition is provided by periodic draining of the fluid from the heat source through a siphon whose performance exceeds the performance of the pump. Erosive effects of cavitation in the nozzle is reduced by providing a vortex fluid flow and displacement of cavitation bubbles from the wall zone in the axial braking jets, followed by the collapse of the bubbles and the formation of a shock wave occurs in the volume of liquid in the plane of the shock usaimage is to drive the pump, in the heat and increase the durability of the device. 1 C.p. f-crystals, 2 Il.

The invention relates to a power system and can be used in heating systems and technological installations for heating the liquid, the intensification of mixing, etc.

Known devices and methods hydrodynamic heating the liquid accompanying the cavitation process in the liquid, while the observed anomalous dissipation in the cavitating water, because thermal energy is significantly greater than the consumed electric. The coefficient of energy transformation reaches two or more (L. C. Larionov and others, "the Phenomenon of cavitation and the problem of generation of heat in liquids". Scientific and technical proceedings, vol. 3-4 "Explosives and pyrotechnics". Moscow. MOS OF THE RUSSIAN FEDERATION. 1996).

The closest technical solution and the destination is "a Method of heat dissipation in the liquid," RF patent 2061195, CL 6 F 24 J 3/00. Effective heat in the liquid is provided by the intensification of the cavitation process of the formation of a gas cushion and a self-oscillating process changes its volume and pressure of fluid. The disadvantage of this method is the complexity of the regulatory process, requiring primeste due to the destruction of her cavitation erosion.

The task of the invention is to improve the efficiency and reliability of the hydrodynamic cavitation generator.

This object is achieved in a known way hydrodynamic heating the liquid by converting generated by the pump pressure in the dynamic pressure of fluid flow, with subsequent inhibition. However what is new is that the fluid speed in a narrowing counter installed coaxial nozzles and inhibit in the plane of the shock of contact of the opposing jets. Divert the liquid through the siphon, creating a self-oscillating mode of the periodic pressure changes in the fluid after its inhibition from surplus to shallow vacuum. Education additional cavitation bubbles is achieved by the fact that the nozzles organize vortex fluid flow.

The removal of the shock deceleration in the volume of liquid and the implementation of counter interaction of the jets significantly reduces cavitation destruction of structural elements of the heat source, increasing the reliability and durability of its operation.

In Fig. 1 shows a diagram of the device for implementing the method of hydrodynamic heating the liquid.

economic heating the liquid, presented on Fig.1, includes a heat source consisting of a body 1, a pipe 2 boards with nozzles 3, siphon with 4 suction inlet 5, pump 6, cogeneration boiler 7.

The hydrodynamic method of heating the liquid is as follows: the fluid for heating the water pump 6 two streams fed into the housing 1 of the heat generator, nozzles 3, placed on the tube plate 2, there is an acceleration of the fluid with a decrease in pressure to a value slightly below the saturated vapor pressure at a given temperature of the liquid in the nozzle. The output of the multi-jet nozzles of the fluid flow percussive interaction coaxial counter-jets in the volume of liquid to the deceleration of the flow, providing a high speed of collapse of the bubbles. To ensure the effective formation of cavitation bubbles and their growth is provided by the creation of a self-oscillatory mode of change of pressure in the fluid periodic draining of fluid from the body 1 of the heat generator through a siphon 4, the performance of which exceeds the capacity of the pump. The frequency of periodic oscillations is set by the value of the distance cutoff intake pipe 5 of the siphon 4 from the top of the housing 1. So, aprimo fill increased frequency of discharge of liquid from teplogeneratora through the siphon 4 in water / water heat boiler 7.

To reduce the erosive effects of cavitation on the internal cavity of the nozzle, the nozzles can be arranged vortex fluid flow to move the cavitation bubbles from parietal area nozzle axially.

Thus is the way of the hydrodynamic heating the liquid with a conversion ratio of energy expended to pump heat source in excess of 100%, and achieved the durability of structural elements of the heat generator.

1. The hydrodynamic method of heating the liquid by converting generated by the pump pressure in the dynamic pressure of fluid flow, with subsequent inhibition, characterized in that the fluid speed in a narrowing counter installed coaxial nozzles and inhibit in the plane of the shock of contact of the opposing jets, divert fluid through the siphon, creating a self-oscillating mode of the periodic pressure changes in the fluid after its inhibition.

2. The method according to p. 1, characterized in that the nozzles organize vortex fluid flow.

 

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