SU620792A1 - Heating pipe - Google Patents

Description

one

The invention relates to heat exchange installations and can be used to transfer heat fluxes in the energy, chemical and other sectors of the industry.

A known heat pipe, in which the movement of the coolant from the condensation zone to the evaporation zone is carried out under the action of capillary forces 1.

The disadvantage of this heat pipe is to limit the intensity of heat transfer due to the relatively low capillary head values.

The closest to the invention to the technical essence and the achieved result is a heat pipe containing a sealed case with evaporation and condensation zones, filled with non-conducting heat carrier with magnetosensitive particles dispersed in its liquid phase, and placed outside the case magnetic system creating a magnetic field rotating around the pipe axis 2

However, such a heat pipe has a relatively low intensity of heat transfer and the impossibility of its regulation.

The purpose of the invention is to intensify heat transfer while ensuring its regulation.

This is achieved by the fact that the magnetic system is placed in the condensation zone, the latter is connected to the evaporation zone by means of a remote pipeline, at the entrance of which a grid with holes smaller than the minimum size of the magnetic susceptible particles is installed, and a nozzle is installed at the outlet. In this case, the inner surface of the body in the evaporation zone is covered with a capillary-porous material, and the end part of the body in the evaporation zone is made convex and has an overall dimension exceeding the diameter of the body in the condensation zone.

FIG. 1 shows the proposed heat pipe, a longitudinal section; in fig. 2 is a view A of FIG. one.

The heat pipe includes a housing 1, in the lower part of which a condensation zone 2 with a heat carrier 3 and magneto-susceptible particles 4 is located. The condensation zone 2 is covered by a magnetic system 5.

In the upper part of the heat pipe there is an evaporation zone 6, the inner part of which is covered with a capillary-porous material 7. Condensation zone 2 is connected to the evaporation zone b by a remote pipe 8. A mesh 9 is installed at the inlet of the pipeline 8. In the evaporation zone 6, the pipeline 8 ends with a nozzle 10 The end part of the body 1 of the heat pipe in the evaporation zone is made convex. Case 1 is coated with thermal insulation 11.

Heat pipe works as follows.

Under the action of a rotating magnetic field, the magnetosensitive particles 4 also begin to rotate around the vertical axis of the condensation zone at a peripheral speed somewhat lower than the rotation speed of the magnetic field. In this case, the heat carrier 3, in which the magnetosensitive particles 4 are dispersed, is involved in the rotational movement around the vertical axis of the heat pipe.

Due to centrifugal forces, the working fluid will exert excessive pressure on the walls of the casing in the condensation zone 2 relative to the absolute pressure in the inner part of the evaporation zone 6. Under the action of this pressure, the working fluid through the pipeline 8 flows from the condensation zone 2 to the evaporation zone 6. To prevent the release of magneto-susceptible particles 4 into the conduit 8, a grid 9 is installed at the entrance to it, the hole size of which is somewhat less than the minimum size of the magneto-susceptible particles 4.

The outflowing jet of liquid coolant from the nozzle 10 permeates the capillary material 7 and the heat pipe can be put into operation. When heat is applied to the evaporation zone 6, the liquid evaporates from the capillary-porous material 7 and the steam flow is transferred, and, consequently, the heat flow from top to bottom to the condensation zone 2. In the condensation zone 2, the vapor condenses, the liquid flows as

the films and under the action of centrifugal forces are again pumped to the evaporation zone.

By using a rotating magnetic field to transport the coolant from the condensation zone to the evaporation zone, heat transfer is significantly increased and its regulation is ensured, and the length of the heat pipe can be increased.

Claims (3)

Invention Formula . A heat pipe containing a hermetic housing with evaporation and condensation zones, filled with non-conductive heat carrier with magnetic-susceptible particles dispersed in its liquid phase, and a magnetic system placed outside the housing, creating a magnetic field rotating around the axis of the pipe, which is different from that for the purpose of intensification heat transfer while ensuring its regulation, the magnetic system is placed in the condensation zone, the latter is connected to the evaporation zone by means of a remote pipe, during which a grid with aperture size smaller than the minimum size of magneto-susceptible particles is installed, and a nozzle is installed at the outlet. . 2. A pipe according to Claim 1, characterized in that the inner surface of the housing in the evaporation zone is covered with a capillary-porous material. 3. Pipe on PP. 1 and 2, characterized in that the front part of the body in the evaporation zone is made convex and has an overall dimension exceeding the diameter of the body in the condensation zone. Sources of information taken into account in the examination: 1. "Heat pipes. Ed. Shpilraina, E.E., M., “Peace, 1972, p. 39 2. USSR author's certificate number 2453908, cl. F 28 D 15/00, 18.02.77. 1 FIG. 2