SU939927A1 - Gas dispersion heat exchanger - Google Patents

Description

(5) H / SHOLE DISPENSER HEAT EXCHANGER

one

This invention relates to heat transfer devices.

A gas-dispersed heat exchanger is known, comprising a housing with inlets and outlets of a gas-dispersing medium and a high-voltage electrode placed along the axis of the housing, connected to a current source and forming a channel with the housing to move the gas-dispersing medium, at least part of the housing wall made of electrically conductive material and grounded .

The disadvantage of this heat exchanger is the relatively low intensity of heat exchange, which is caused by the reloading of dispersed particles and their departure from the boundary layer on the heat exchange surface in the direction of the high voltage electrode.

The purpose of the invention is to intensify heat transfer.

The goal is achieved by the fact that the high voltage electrode

made of sectioned sections separated by dielectric jumpers and connected through one to the same poles of the current source.

Each section of the high voltage electrode has a length (0-kO} d, where d is the hydraulic diameter of the channel.

When the body is made by a cylindrical pipe of the gas-dispersed medium inlet, it is set tangentially and tilted to the cylinder generator at an angle from 15 to-90 °.

FIG. Figure 1 shows schematically a longitudinal section of a heat exchanger according to the invention (a housing with a rectangular cross section); in fig. 2 - the same, (with a cylindrical body); in fig. 3 shows section A-A in FIG. one; in fig. k is a section BB in FIG. 2

20

The heat exchanger includes a housing 1 with nozzles 2 and 3 of the input and output of the gas-dispersed medium, respectively, and a high-voltage electrode, 3 sections 5 of which are separated by dielectric jumpers 6 and connected via one to the same poles of the current source 7. The high voltage electrode 4 forms with the housing 1 a channel 8 for moving the gas-dispersed medium. In case the case t has a rectangular cross section (Fig. 1 and Fig. 2), the opposite walls 9 and 10 are electrically conductive, grounded and separated by dielectric walls 11 and 12. The cylindrical case t (Fig. 2 and Fig. 3) The conduit 2 of the gas-dispersed medium inlet is made tangentially and tilted to the generator cylinder at an angle d lying in the interval from 15 to 90 °. The length of sections 5 is enclosed in the range from 10 d to O d (the hydraulic diameter d is determined by the usual formula. P. -P-g1- ° Chzd cross-section of the channel, P is its perimeter) .. The heat exchanger works as follows. The gas-dispersed medium enters channel 8 through nozzle 2, while particles carrying tribosar, in the electric field move in the direction of the grounded walls of housing 1 and turbolize the boundary layer, which intensifies the heat exchange. The reloading of particles occurs on the lengths of the order (lO-AO) d, since after the same intervals (equal to the length of sections 5) the direction of the electric field is reversed, the particles remain close to the heat exchange surface, to the heat transfer intensifier. 7 Thus, the sectioning of the high-voltage electrode allows to increase the intensity of heat exchange in the gas-dispersed heat exchanger. 1. Gas-dispersed heat exchanger comprising a case with inlet and outlet nozzles of the gas-dispersed medium and a high-voltage electrode placed along the axis of the case and connected to a current source and forming a channel for moving the gas-dispersed medium with the case, at least part of the wall of the case being made of electrically conductive material and grounded, characterized in that, in order to intensify heat exchange, the high-voltage electrode is made partitioned, the sections are separated by dielectric jumpers and connect enes through one to the like poles of the current source. 2. A heat exchanger according to claim 1, characterized in that each section of the high voltage electrode has a length constituting () d, where d is the hydraulic diameter of the channel. 3. Heat exchanger according to claim 1, characterized in that, when the body is cylindrical, the inlet of the gas-dispersed medium is installed tangentially and tilted to the cylinder generator at an angle from 15 to 90. Sources of information taken into account during the examination 1. USSR author's certificate on for application W 2859522, class F 2B D 7/00, t979.

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Claims (3)

Claim 1. A gas-dispersed heat exchanger, comprising a housing with nozzles for input and output of a gas-dispersed medium and placed on the axis of the housing a high-voltage electrode connected to a current source and forming, with a housing, a channel for moving the gas-dispersed medium, and at least part of the wall of the housing is made of electrically conductive material and grounded, characterized 20 in that, in order to intensify heat transfer, the high voltage electrode is partitioned, the sections are separated by dielectric jumpers and connected through one to the same poles of the current source. 2. Heat exchanger according to π. 1, characterized in that each section of the high voltage electrode has a length of (10-4fl) d, ZO where d is the hydraulic diameter of the channel. 3. The heat exchanger according to claim 1, characterized in that when the body is made cylindrical, the inlet of the gas-dispersed medium is installed tangentially and is inclined to the cylinder generatrix at an angle of 15 to 90 ° ..