METHOD TO HEAT AND INJECT CURRENT-CONDUCTING FLUID, DEVICE FOR ITS REALISATION AND HEAT-GENERATING PLANT Russian patent published in 2011 - IPC F24H1/20 

FIELD: power engineering.

SUBSTANCE: invention relates to methods and technical facilities for heating and injection of current-conducting fluids (CCF) and may be used in power engineering, in devices designed to pump and inject CCF in heating and hot water supply systems of buildings and structures, in various production processes, machines and plants. Method to heat and inject CCF is carried out with the help of a tight electrode heating chamber and includes transmission of AC current between a zero and a phase electrodes via CCF with heating of the latter until it boils, displacement of the heated fluid from the chamber into an injection line via an outlet check valve under action of steam pressure, steam condensation with underpressure development in the chamber and filling of the latter via an inlet check valve under action of the specified underpressure. At the same time the current transmission through the liquid is interrupted in process of displacement and is recommenced in process of the chamber filling as the lowering and rising level of CCF passes through the level of the chamber working cavity, which is arranged at the height h relative to the bottom, which makes 0.7-1.0 of height H of the specified working cavity, and a reversing heat exchange is developed in the chamber between CCF and the bottom, in accordance with which, in process of current transmission via CCF, the heat from CCF is transferred to the bottom and is accumulated in the latter, and after the specified interruption in the current transmission, the heat from the bottom is transferred to CCF. The specified reversing heat exchange is carried out with supply of some heat to the bottom, which is sufficient to maintain CCF temperature at the chamber bottom not less than the temperature of the specified fluid boiling. Besides, in the bottom part of the chamber, between the bottom of the latter and lower ends of phase electrodes, a zone of intense electric heating of CCF is created. Device to heat and inject CCF comprises a heating chamber arranged with the possibility to ensure above-specified intermittent mode of current transmission via CCF. Besides, the heating chamber is made with provision of reversing heat exchange. At the same time a "fluid-fluid" type heat exchanger is used with a heating fluid circuit and a heated fluid circuit, connected to a heat-consuming device.

EFFECT: reduced power inputs to heat and inject CCF, elimination of chances of steam supply into injection line and provision of the possibility to efficiently use the entire working space of the heating chamber with reduction of height and weight of the latter.

26 cl, 5 dwg